CA1118629A - Process for preparing chewing gum base using solid elastomer - Google Patents
Process for preparing chewing gum base using solid elastomerInfo
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- CA1118629A CA1118629A CA000326809A CA326809A CA1118629A CA 1118629 A CA1118629 A CA 1118629A CA 000326809 A CA000326809 A CA 000326809A CA 326809 A CA326809 A CA 326809A CA 1118629 A CA1118629 A CA 1118629A
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Abstract
2100.1359 PROCESS FOR PREPARING CHEWING GUM
BASE USING SOLID ELASTOMER
ABSTRACT OF THE DISCLOSURE
A two-stage process for the preparation of a chewing gum base utilizing solid elastomer is described wherein the solid elastomer is initially subjected to high intensity mixing under high shear conditions to masticate the solid until a substantially uniform, lump-free mass is obtained; followed by the step-wise addition of an elastomer solvent and an oleaginous plasticizer with continuous high intensity mixing until a substantially molten, uniform mass is obtained. In the second stage of the process, the remaing chewing gum base ingredients are added, step-wise, with continuous high intensity mixing until a uniform blend of ingredients is OBTAINED. The second stage ingredients, which may include a non-toxic vinyl polymer, a hydrophobic plasticizer, additional oleaginous plasticizer and an emulsifier, are added step-wise in a sequence determined by decreasing order of viscosity. In a modification of the process, the hydrophobic plasticizer or emulsifier may be added with the stage one ingredients. Optional ingredients such as antioxidants and fillers may be added during stage one or stage two; and pigments, which are also optional, may be added during the stage two processing.
BASE USING SOLID ELASTOMER
ABSTRACT OF THE DISCLOSURE
A two-stage process for the preparation of a chewing gum base utilizing solid elastomer is described wherein the solid elastomer is initially subjected to high intensity mixing under high shear conditions to masticate the solid until a substantially uniform, lump-free mass is obtained; followed by the step-wise addition of an elastomer solvent and an oleaginous plasticizer with continuous high intensity mixing until a substantially molten, uniform mass is obtained. In the second stage of the process, the remaing chewing gum base ingredients are added, step-wise, with continuous high intensity mixing until a uniform blend of ingredients is OBTAINED. The second stage ingredients, which may include a non-toxic vinyl polymer, a hydrophobic plasticizer, additional oleaginous plasticizer and an emulsifier, are added step-wise in a sequence determined by decreasing order of viscosity. In a modification of the process, the hydrophobic plasticizer or emulsifier may be added with the stage one ingredients. Optional ingredients such as antioxidants and fillers may be added during stage one or stage two; and pigments, which are also optional, may be added during the stage two processing.
Description
1i !
I , . . . .
l BAC~;GROUND OF THE I~VE~l:rION
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'I 1. Field of the rnvention The present invention relates to a two-stage process for the preparation of a chewing gum base utilizing solid elastomer.
I , . . . .
l BAC~;GROUND OF THE I~VE~l:rION
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'I 1. Field of the rnvention The present invention relates to a two-stage process for the preparation of a chewing gum base utilizing solid elastomer.
2. Description of the Frior Art S In United States Patent ~o, 3,995,064, there is described a three-step ~rocess for the preparation of a chewing gum base utllizing solid elastomer In which the order of mixing and blending ingredients is stated to be critical, particularly with ¦ respect to tke oleaginous plasticizer and the hydrophobic ¦ plasticizer ingredients ~hi'ch cannot be added during mixing under ¦ high shear conditions~ In the process of aforementioned United ¦ States Patent No. 3,995,064, the hydrophobic plasticizer is added ¦ durins the second step where mixing ts conducted under reduced shear conditions'and increased folding actionj and the oleaginous plasticizer must be added in the third step wherein mixing is conducted under rapid folding action with substantially no shearing, According to the two-stage process of the subject invention, it has been found that all gum base ingredients may be subjected to high intensity mixing under conditions of high shear.
Moreover, the oleaginous plasticizer ~s a necessary ingredient , of the first stage wherein both the elastomer and the elastomer solvent are present.
,i 1.1 il~8629 !!
DESCRIPTION O~ ~EE PAR~CULAR E~BODI~NTS
According to the present Invention, chewing gum base may be prepared in a two-stage process ~herein, in the first stagelsolid ¦ elastomer is initially subjected to high intensity mixing under ¦ high shear conditions to mastlcate the solid elastomer and obtain a substantially uniform, lump-free mass. An elastomer solvent is then added, step-~ise, to the mixer containing the masticated solid elastomer, followed by the step-wise addition of an oleaginous plasticizer. Typlcally, these last named ingredients are metered into the mixer containlng the masticated solid elastomer.. The hlgh intensity mixing is conducted during the step-wise addition of both the elastomer solvent and the oleaginous plasticizer and continued after the addition of these ingredients has been completed until a substantially molten, uniform mass ls obtained. The effluent from the high intensity mixer of stage one is a rubber compound, completely homogenous, which has no undispersed eIastomeric particles and which can be l stretched into a translucent fllm.
Solid elastomers sultakle for use in the process of this invention are those ncrmally used tn che~ing gum base and 11186Z~
include synthetic gums or elastomers such as butadiene-styrene copolymer, polyisobutylene and isobutylene-isoprene copolymer;
natural gums or elastomers such as chicle, natural rubber, jelutong, balata, guttapercha, lechi caspi, sorva, or mixtures thereof.
Among these, butadiene-styrene copolymer, polyisobutylene, isobutylene-isoprene copolymer or mixtures thereof are preferred as the elastomer solid.
As the elastomer solvent, there may be mentioned terpene resins such as polymers of ~-pinene or ~-pinene; rosin derivatives such as the glycerol ester of polymerized rosin or the glycerol ester of hydrogenated rosin; and mixtures thereof.
The following oleaginous plastici~ers are suitable for use in the practice of this invention: hydrogenated vegetable oils, cocoa butter, natural waxes, petroleum waxes such as the polyethylene waxes, and paraffin waxes; or mixtures thereof.
The first stage of the process of the present invention may be conducted without the addition of heat since heat is generated by the high intensity mixing of the solid elastomer. However, it has been found advantageous to apply heat to the mixing kettle initially ~by heating the mixing kettle to a temperature range of 88C. - 102C) to speed up the process. After the solid elastomer has been mixed for a period of time, heat is built up by the shearing of the elastomer so that the application of heat is no longer necessary and may be discontinued. Cooling is some-times necessary i.f too much heat is built up during the shearing ~1, 1118~i29 of the elastomer. If cooling is applied, it may then be necessary to apply additional heat to prevent the mass from adhering to the mixer. In any event, maximum temperatures built up duTing the mixing should not exceed the decomposition temperatures of the ingredients being mixed during a particular stage of proccssing. The mixing of the stage one ingredients is completed when a substantially molten, uniform mass is ohtained.
lhe sequence of addition of the named ingredients and the high intensity mixing are critical in this first stage.
The second stage in the process of the present invention involves the step-wise addition of the remaining chewing gum base ingredients and ad-ditional high intensity mixing under high shear conditions ulltil a uniform blend of ingredients is obtained. The second stage ingredients includes a hydrophobic plasticizer, additional oleaginous plasticizer, a non-toxic vinyl polymer, and an emulsifier. If the process is being performed in a continuous manner, the second step ingredients are added to the molten nass of stage one, step-wise, with continuous high intensity mixing. Typically, the stage two ingredients are metered into the molten mass of stage one~ in sequence by decreasing order of viscosity. For example, the hydrophobic plasticizer is added first, followed by the oleaginous plasticizer, the vinyl polymer, and lastly, the emulsifier.
Suitable non-toxic vinyl polymers are those conventionally used in chewing gum base such as polyvinyl acetate or partially hydrolyzed polyvinyl acetate, i.e., polyvinyl alcohol, and mixtures thereof.
As the hydrophobic plasticizer, there may be mentioned alcohol esters of rosin, for example, glycerol esters of hydrogenated rosin, the glycerol esters of partially hydrogenated rosin or mixtures thereof.
Oleaginous plasticizers mentioned above which are suitable for addition during stage one are also suitable for addition during stage two.
As the emulsifier, lecithin, fatty acid monoglycerides, diclycer-ides or triglycerides, i.e., glycerol monostearate or propylene glycol mono-11186;~9 stearate~ and mixtures thereof, are suitable for use in the process of thisinvention.
As has been mentioned, high intensity mixing under conditions of high shear is continued throughout the addition of all stage two ingredients.
When the process of the invention is performed in a continuous manner, suf-ficient heat is applied during stage two to maintain the mass in a molten condition while the ingredients are added.
In the event of batch processing, heat is-also applied initially to ensure that the stage one mass is molten before commencement of high intensity mixing and during the addition of the stage two ingredients. In a batch process, the stage one molten mass may be fed into a holding tank, from which a predetermined amount of the molten mass (heated if necessary) is metered into a second high intensity mixer. The stage two ingredients are then added, typically by metering, with continuous high intensity mix-ing. After all of the stage two ingredients have been added, ~he high intensity mixing is continued until a uniform blend of all ingredients is obtained.
In an alternative process for preparing the chewing gum base of this invention, certain of the stage two ingredients may be added during stage one. Specifically, the hydrophobic plasticizer (except as specified below) may be added during the stage one processing. Since the above named ingredients for the elastomer solvent and the hydrophobic plasticizer are similar, they may be used interchangeably. The hydrophobic plasticizer may be added during stage one after the addition of the elastomer and the elas-tomer solvent. In another variation of the process of the invention, the emulsifier is added during stage one processing or partially during both stage one and stage two processing. The emulsifier may be added before or after the addition of the oleaginous plasticizer. In any event, as has been specified above, each ingredient is added step-wise, typically by metering, with continuous high intensity mixing.
~118f~29 For the preparation of certain types of gum base, the non-toxic vinyl polymer normally added during stage two processing may be omitted.
In such case, a portion of the hydrophobic plasticizer must be added during the stage two processing.
The addition of optional ingredients such as antioxidants, pres-ervatives, fillers and pigments is also contemplated in the process of this inven~ion. Antioxidants, preservatives and fillers may be added either dur-ing stage one or stage two processing; pigments are added during stage two processing. Typically, the antioxidants and preservatives (i.e., butylated hydroxyanisole, butylated hydroxytoluene, propyl gallate and the like) are pre-blended with one of the necessary ingredients prior to the step-wise addition. In a preferred embodiment of this invention, antioxidants and/or preservatives are preblended with the emulsifier and/or the oleaginous plasticizer.
Fillers, including calcium carbonate, magnesium carbonate, talc and the like may be added during stage one or stage two. Preferably, the filler is added during stage two, typically as the first stage two ingredi-ent.
Pigments (i.e., titanium dioxide, copper chlorophyllin, ~-carotene, Red no. 3, Blue no. 2 and Yellow no. 6) if included are added during the stage two processing, typically with the filler ingredient.
The above mentioned optional ingredients are added step-wise, with continuous high intensity mixing as prèviously described for the necessary gum base ingredients.
The various ingredients named above for use in the gum base pre-pared according to the process of this invention are those conventionally used in the preparation of chewing gum base. They may be present in the following parts by weight, based on the total weight of the chewing gum base composition:
11186;;~
INGREDIENT PARTS BY WEI~11 Elastomer 5-15 Elastomer Solvent 5-25 Oleaginous Plasticizer 10-30 Non-toxic Vinyl Polymer 1-35 Hydrophobic Plasticizer 5-25 Emulsifier 2-10 Filler ~where used) 1-35 Antioxidant/preservatives 0-2 Pigments 0-2 The oleaginous plasticizer, which comprises from about 10% to about 30% of the total gum base composition, is a necessary ingredient in both stage one and stage two of the process of this invention. Generally, from about 5 to about 15 parts by weight of the ol&aginous plasticizer are added during stage one processing and from about 5 to about 15 parts by weight are added during stage two processing.
: The foregoing sequence of addition of ingredients, with continuous mixing has been found to be critical to the process of this invention. In contrast to prior art processes, it has been found that the oleaginous plas-ticizer must be added with the elastomer and elastomer solvent during stage one and subjected to high intensity mixing if a completely homogenous blend of ingredients is to be obtained. Furthermore, as opposed to the prior art processes, it has been found that all remaining gum base ingredients may be added in the second stage of the process and subjected to high intensity mixing to obtain a uniform, substantially lump-free chewing gum base. The two-stage process of the invention is flexible in that it may be performed in a batch or continuous manner. Additionally, the process effectively re-duces the time presently required to produce chewing gum base by convention-al means using elastomer latex rather than solid elastomer.
The high intensity mixing apparatus suitable for use in the process 2~
of this invention provides a high degree of shear on the substances beingmixed such that milling action is achieved due to the close tolerances be-tween moving surfaces. The mixers, feeding equipment, blenders and holding tanks used in the process of this invention are conventional in design.
They may be jacketed, in a conventional manner, in order that heating or cooling can be applied, when necessary, to maintain the ingredients in the molten state and ensure efficient mixing.
In order to further illustrate the process of this invention, the following examl~les are provided:
INGREDIENTS PART EIGHT
1. Butadiene-styrene copolymer latex solid 10 2. Glycerol ester of hydrogenated rosin 18
Moreover, the oleaginous plasticizer ~s a necessary ingredient , of the first stage wherein both the elastomer and the elastomer solvent are present.
,i 1.1 il~8629 !!
DESCRIPTION O~ ~EE PAR~CULAR E~BODI~NTS
According to the present Invention, chewing gum base may be prepared in a two-stage process ~herein, in the first stagelsolid ¦ elastomer is initially subjected to high intensity mixing under ¦ high shear conditions to mastlcate the solid elastomer and obtain a substantially uniform, lump-free mass. An elastomer solvent is then added, step-~ise, to the mixer containing the masticated solid elastomer, followed by the step-wise addition of an oleaginous plasticizer. Typlcally, these last named ingredients are metered into the mixer containlng the masticated solid elastomer.. The hlgh intensity mixing is conducted during the step-wise addition of both the elastomer solvent and the oleaginous plasticizer and continued after the addition of these ingredients has been completed until a substantially molten, uniform mass ls obtained. The effluent from the high intensity mixer of stage one is a rubber compound, completely homogenous, which has no undispersed eIastomeric particles and which can be l stretched into a translucent fllm.
Solid elastomers sultakle for use in the process of this invention are those ncrmally used tn che~ing gum base and 11186Z~
include synthetic gums or elastomers such as butadiene-styrene copolymer, polyisobutylene and isobutylene-isoprene copolymer;
natural gums or elastomers such as chicle, natural rubber, jelutong, balata, guttapercha, lechi caspi, sorva, or mixtures thereof.
Among these, butadiene-styrene copolymer, polyisobutylene, isobutylene-isoprene copolymer or mixtures thereof are preferred as the elastomer solid.
As the elastomer solvent, there may be mentioned terpene resins such as polymers of ~-pinene or ~-pinene; rosin derivatives such as the glycerol ester of polymerized rosin or the glycerol ester of hydrogenated rosin; and mixtures thereof.
The following oleaginous plastici~ers are suitable for use in the practice of this invention: hydrogenated vegetable oils, cocoa butter, natural waxes, petroleum waxes such as the polyethylene waxes, and paraffin waxes; or mixtures thereof.
The first stage of the process of the present invention may be conducted without the addition of heat since heat is generated by the high intensity mixing of the solid elastomer. However, it has been found advantageous to apply heat to the mixing kettle initially ~by heating the mixing kettle to a temperature range of 88C. - 102C) to speed up the process. After the solid elastomer has been mixed for a period of time, heat is built up by the shearing of the elastomer so that the application of heat is no longer necessary and may be discontinued. Cooling is some-times necessary i.f too much heat is built up during the shearing ~1, 1118~i29 of the elastomer. If cooling is applied, it may then be necessary to apply additional heat to prevent the mass from adhering to the mixer. In any event, maximum temperatures built up duTing the mixing should not exceed the decomposition temperatures of the ingredients being mixed during a particular stage of proccssing. The mixing of the stage one ingredients is completed when a substantially molten, uniform mass is ohtained.
lhe sequence of addition of the named ingredients and the high intensity mixing are critical in this first stage.
The second stage in the process of the present invention involves the step-wise addition of the remaining chewing gum base ingredients and ad-ditional high intensity mixing under high shear conditions ulltil a uniform blend of ingredients is obtained. The second stage ingredients includes a hydrophobic plasticizer, additional oleaginous plasticizer, a non-toxic vinyl polymer, and an emulsifier. If the process is being performed in a continuous manner, the second step ingredients are added to the molten nass of stage one, step-wise, with continuous high intensity mixing. Typically, the stage two ingredients are metered into the molten mass of stage one~ in sequence by decreasing order of viscosity. For example, the hydrophobic plasticizer is added first, followed by the oleaginous plasticizer, the vinyl polymer, and lastly, the emulsifier.
Suitable non-toxic vinyl polymers are those conventionally used in chewing gum base such as polyvinyl acetate or partially hydrolyzed polyvinyl acetate, i.e., polyvinyl alcohol, and mixtures thereof.
As the hydrophobic plasticizer, there may be mentioned alcohol esters of rosin, for example, glycerol esters of hydrogenated rosin, the glycerol esters of partially hydrogenated rosin or mixtures thereof.
Oleaginous plasticizers mentioned above which are suitable for addition during stage one are also suitable for addition during stage two.
As the emulsifier, lecithin, fatty acid monoglycerides, diclycer-ides or triglycerides, i.e., glycerol monostearate or propylene glycol mono-11186;~9 stearate~ and mixtures thereof, are suitable for use in the process of thisinvention.
As has been mentioned, high intensity mixing under conditions of high shear is continued throughout the addition of all stage two ingredients.
When the process of the invention is performed in a continuous manner, suf-ficient heat is applied during stage two to maintain the mass in a molten condition while the ingredients are added.
In the event of batch processing, heat is-also applied initially to ensure that the stage one mass is molten before commencement of high intensity mixing and during the addition of the stage two ingredients. In a batch process, the stage one molten mass may be fed into a holding tank, from which a predetermined amount of the molten mass (heated if necessary) is metered into a second high intensity mixer. The stage two ingredients are then added, typically by metering, with continuous high intensity mix-ing. After all of the stage two ingredients have been added, ~he high intensity mixing is continued until a uniform blend of all ingredients is obtained.
In an alternative process for preparing the chewing gum base of this invention, certain of the stage two ingredients may be added during stage one. Specifically, the hydrophobic plasticizer (except as specified below) may be added during the stage one processing. Since the above named ingredients for the elastomer solvent and the hydrophobic plasticizer are similar, they may be used interchangeably. The hydrophobic plasticizer may be added during stage one after the addition of the elastomer and the elas-tomer solvent. In another variation of the process of the invention, the emulsifier is added during stage one processing or partially during both stage one and stage two processing. The emulsifier may be added before or after the addition of the oleaginous plasticizer. In any event, as has been specified above, each ingredient is added step-wise, typically by metering, with continuous high intensity mixing.
~118f~29 For the preparation of certain types of gum base, the non-toxic vinyl polymer normally added during stage two processing may be omitted.
In such case, a portion of the hydrophobic plasticizer must be added during the stage two processing.
The addition of optional ingredients such as antioxidants, pres-ervatives, fillers and pigments is also contemplated in the process of this inven~ion. Antioxidants, preservatives and fillers may be added either dur-ing stage one or stage two processing; pigments are added during stage two processing. Typically, the antioxidants and preservatives (i.e., butylated hydroxyanisole, butylated hydroxytoluene, propyl gallate and the like) are pre-blended with one of the necessary ingredients prior to the step-wise addition. In a preferred embodiment of this invention, antioxidants and/or preservatives are preblended with the emulsifier and/or the oleaginous plasticizer.
Fillers, including calcium carbonate, magnesium carbonate, talc and the like may be added during stage one or stage two. Preferably, the filler is added during stage two, typically as the first stage two ingredi-ent.
Pigments (i.e., titanium dioxide, copper chlorophyllin, ~-carotene, Red no. 3, Blue no. 2 and Yellow no. 6) if included are added during the stage two processing, typically with the filler ingredient.
The above mentioned optional ingredients are added step-wise, with continuous high intensity mixing as prèviously described for the necessary gum base ingredients.
The various ingredients named above for use in the gum base pre-pared according to the process of this invention are those conventionally used in the preparation of chewing gum base. They may be present in the following parts by weight, based on the total weight of the chewing gum base composition:
11186;;~
INGREDIENT PARTS BY WEI~11 Elastomer 5-15 Elastomer Solvent 5-25 Oleaginous Plasticizer 10-30 Non-toxic Vinyl Polymer 1-35 Hydrophobic Plasticizer 5-25 Emulsifier 2-10 Filler ~where used) 1-35 Antioxidant/preservatives 0-2 Pigments 0-2 The oleaginous plasticizer, which comprises from about 10% to about 30% of the total gum base composition, is a necessary ingredient in both stage one and stage two of the process of this invention. Generally, from about 5 to about 15 parts by weight of the ol&aginous plasticizer are added during stage one processing and from about 5 to about 15 parts by weight are added during stage two processing.
: The foregoing sequence of addition of ingredients, with continuous mixing has been found to be critical to the process of this invention. In contrast to prior art processes, it has been found that the oleaginous plas-ticizer must be added with the elastomer and elastomer solvent during stage one and subjected to high intensity mixing if a completely homogenous blend of ingredients is to be obtained. Furthermore, as opposed to the prior art processes, it has been found that all remaining gum base ingredients may be added in the second stage of the process and subjected to high intensity mixing to obtain a uniform, substantially lump-free chewing gum base. The two-stage process of the invention is flexible in that it may be performed in a batch or continuous manner. Additionally, the process effectively re-duces the time presently required to produce chewing gum base by convention-al means using elastomer latex rather than solid elastomer.
The high intensity mixing apparatus suitable for use in the process 2~
of this invention provides a high degree of shear on the substances beingmixed such that milling action is achieved due to the close tolerances be-tween moving surfaces. The mixers, feeding equipment, blenders and holding tanks used in the process of this invention are conventional in design.
They may be jacketed, in a conventional manner, in order that heating or cooling can be applied, when necessary, to maintain the ingredients in the molten state and ensure efficient mixing.
In order to further illustrate the process of this invention, the following examl~les are provided:
INGREDIENTS PART EIGHT
1. Butadiene-styrene copolymer latex solid 10 2. Glycerol ester of hydrogenated rosin 18
3. Hydrogenated vegetable oil 11
4 Calcium carbonate 15
5. Paraffin wax 10
6. Polyvinyl acetate 31
7. Glycerol monostearate 5 Preheat the high intensity mixer to 88C - 102C, add ingredient 1 and commence mixing. Continue to mix for about 20 minutes or until a lump-free mass is obtained. Discontiuue heat and add ingredient 2, step-wise, and continue mixing for a period of from 1 1/2 to 2 hours. Add 3, step-wise, and continue mixing for from 1/2 to 3/4 of an hour. Discontinue mixing and transfer the mass to a second high intensity mixer which is jacketed to maintain a temperature of at least 85C but no higher than 105C. Commence mixing, add ingredient 4, step-wise, and continue mixing for approximately 20 minutes. Add ingredients 5, 6 and 7, step-wise, mixing each for at least 15 minutes before the next ingredient addition. When all ingredients have been added, an additional 15 minutes of mixing is sufficient to obtain a homogenous gum base.
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EXAMPLF. 2 INGREDIENTS PARTS BY WEIG~IT
1. Polyisobutylene solid 11 2. Dimerized rosin ester lO
3. Paraffin wax 13 4. Glycerol 0ster of 20 hydrogenated rosin S. Hydrogenated vegetable oil 12 6. Polyvinyl acetate 25 7. Glycerol monostearate 9 Follow the procedure of Example 1 for ingredients 1, 2, and 3 and transfer the mass to a second high intensity mixer which is jacketed to maintain a temperature of at least 85C but no higher than 105C. CGmmence mixing and add ingredients 4, 5, 6 and 7, step-wise, mixing each for at least 15 minutes before the next ingredient addition. When all ingredients have been added, an additional 15 minutes of mixing is sufficient to obtain a homogenous gum base.
INGREDIENTS PARTS BY WEIGHT
.
1. Butadiene-styrene copolymer latex solid 10 2. Dimerized rosin 8 3. Glycerol esters of hydrogenated rosin 6 4. Lecithin 5. Hydrogenated vegetable oil 11 6. Calcium carbonate 15 7. Candelilla wax 9
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EXAMPLF. 2 INGREDIENTS PARTS BY WEIG~IT
1. Polyisobutylene solid 11 2. Dimerized rosin ester lO
3. Paraffin wax 13 4. Glycerol 0ster of 20 hydrogenated rosin S. Hydrogenated vegetable oil 12 6. Polyvinyl acetate 25 7. Glycerol monostearate 9 Follow the procedure of Example 1 for ingredients 1, 2, and 3 and transfer the mass to a second high intensity mixer which is jacketed to maintain a temperature of at least 85C but no higher than 105C. CGmmence mixing and add ingredients 4, 5, 6 and 7, step-wise, mixing each for at least 15 minutes before the next ingredient addition. When all ingredients have been added, an additional 15 minutes of mixing is sufficient to obtain a homogenous gum base.
INGREDIENTS PARTS BY WEIGHT
.
1. Butadiene-styrene copolymer latex solid 10 2. Dimerized rosin 8 3. Glycerol esters of hydrogenated rosin 6 4. Lecithin 5. Hydrogenated vegetable oil 11 6. Calcium carbonate 15 7. Candelilla wax 9
8. Polyvinyl acetate 35
9. Glycerol monostearate 5 Follow the procedure of Example 1 for ingredients 1, 2 and 3 and add ingredient 4, step-wise, and mix for about 15 minutes; then add ingredi-
- 10 -1~18~29 ent 5 and mix for from 1/2 to 3/4 of an hour. Transfer the mass to a sec-ond higll intensity mixer, jacketed to maintain a temperature of at least 85C but no higher than 105C. Commence mixing and add ingredient 6, step-wiseJ and continue mixillg for approximately 20 minutes. Add ingredients 7, 8 and 9, step-wise, mixing eacll at least 15 minutes before the next ingredi-ent addition. When all ingredients have been added, an additional 15 min-utes of mixing is sufficient to obtain a homogenous gum base.
INGREDIENTS PARTS BY WEIGIIT
1. Butadiene-styrene copolymer latex solid 12 2. Glycerol ester of hydrogenated rosin 18 3. Paraffin wax 5 4. Calcium carbonate 25 5. Dimerized rosin ester 30 6. Hydrogenated vegeta~le oil 5 7. Glycerol monostearate 4.92 8. Butylated hydroxy anisole, preblended with .08 a portion of No. 7 Follow the procedure of Example 1 for ingredients 1-4. Add in-gredient 5, step-wise, and mix for approximately 30 minutes. Then add in-gredients 6, 7 and 8, step-wise, mixing each for at least 15 minutes before the next jngredient addition. When all ingredients have been added, an ad-ditional 15 minutes of mixing is sufficient to obtain a homogenous gum base.
INGREDIENTS PARTS BY WEIGHT
1. Butadiene-styrene copolymer latex solid 11 2. Dimerized rosin 10 3. Lecithin 3 4. Paraffin wax 10 5. Calcium carbonate 21 6. Glycerol ester of hydrogenated rosin 10 11181f;29 EXAMPLE 5 CO~T'D
INGREDIENTS PARTS BY WEIGHl' . _ .
7. Hydrogenated vegetable oil 10 8. Polyvinyl alcohol 20 9. Glycerol monostearate 5 Follow the procedure of Example 1 for ingredients 1 and 2 and add ingredient 3, step-wise, and mix for about 15 minutes; then add ingredient 4 and mix for from 1/2 to 3/4 of an hour. Transfer the mass to a second high intensity mixer, jacketed to maintain a temperature of at least 85C, but no higher than 105C. Commence mixing and add ingredient 5, step-wise, and continue mixing for approximately 20 minutes. Add ingredients 6, 7, 8 and 9, step-wise mixing each at least 15 minutes before the next ingredient addition. When all ingredients have been added, an additional 15 minutes of mixing is sufficient to obtain a homogenous gum base.
INGREDIENTS PARTS BY WEIGIIT
1. Butadiene-styrene copolymer latex solid 12 2. Glycerol ester of hydrogenated rosin 18 3. Paraffin wax 5 4. Calcium carbonate 25 5. Dimerized rosin ester 30 6. Hydrogenated vegeta~le oil 5 7. Glycerol monostearate 4.92 8. Butylated hydroxy anisole, preblended with .08 a portion of No. 7 Follow the procedure of Example 1 for ingredients 1-4. Add in-gredient 5, step-wise, and mix for approximately 30 minutes. Then add in-gredients 6, 7 and 8, step-wise, mixing each for at least 15 minutes before the next jngredient addition. When all ingredients have been added, an ad-ditional 15 minutes of mixing is sufficient to obtain a homogenous gum base.
INGREDIENTS PARTS BY WEIGHT
1. Butadiene-styrene copolymer latex solid 11 2. Dimerized rosin 10 3. Lecithin 3 4. Paraffin wax 10 5. Calcium carbonate 21 6. Glycerol ester of hydrogenated rosin 10 11181f;29 EXAMPLE 5 CO~T'D
INGREDIENTS PARTS BY WEIGHl' . _ .
7. Hydrogenated vegetable oil 10 8. Polyvinyl alcohol 20 9. Glycerol monostearate 5 Follow the procedure of Example 1 for ingredients 1 and 2 and add ingredient 3, step-wise, and mix for about 15 minutes; then add ingredient 4 and mix for from 1/2 to 3/4 of an hour. Transfer the mass to a second high intensity mixer, jacketed to maintain a temperature of at least 85C, but no higher than 105C. Commence mixing and add ingredient 5, step-wise, and continue mixing for approximately 20 minutes. Add ingredients 6, 7, 8 and 9, step-wise mixing each at least 15 minutes before the next ingredient addition. When all ingredients have been added, an additional 15 minutes of mixing is sufficient to obtain a homogenous gum base.
Claims (40)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A two-stage process for preparing a chewing gum base using solid elastomer which comprises:
A. a first stage wherein solid elastomer, an elastomer solvent and an oleaginous plasticizer are subjected to high intensity mixing under shear conditions until a molten, uniform mass is obtained; said solid elas-tomer being initially subjected to high intensity mixing to masticate said solid elastomer until a uniform, lump-free mass is obtained, followed by the step-wise addition of said elastomer solvent with continuous high intensity mixing, followed by the step-wise addition of said oleaginous plasticizer with continuous high intensity mixing; and B. a second stage wherein a hydrophobic plasticizer, an oleag-inous plasticizer, a non-toxic vinyl polymer and an emulsifier are added to the molten, uniform mass of A, said second stage ingredients being added step-wise to the molten, uniform mass of A, with continuous high intensity mixing under high shear conditions; said high intensity mixing being con-tinued until a uniform blend of ingredients is obtained.
A. a first stage wherein solid elastomer, an elastomer solvent and an oleaginous plasticizer are subjected to high intensity mixing under shear conditions until a molten, uniform mass is obtained; said solid elas-tomer being initially subjected to high intensity mixing to masticate said solid elastomer until a uniform, lump-free mass is obtained, followed by the step-wise addition of said elastomer solvent with continuous high intensity mixing, followed by the step-wise addition of said oleaginous plasticizer with continuous high intensity mixing; and B. a second stage wherein a hydrophobic plasticizer, an oleag-inous plasticizer, a non-toxic vinyl polymer and an emulsifier are added to the molten, uniform mass of A, said second stage ingredients being added step-wise to the molten, uniform mass of A, with continuous high intensity mixing under high shear conditions; said high intensity mixing being con-tinued until a uniform blend of ingredients is obtained.
2. The process according to Claim 1 wherein the process is conducted in a single high intensity mixer in a continuous manner.
3. The process according to Claim 1 wherein, in step B, the hydro-phobic plasticizer, the oleaginous plasticizer, the vinyl polymer and the emulsifier are added, step-wise to the molten, uniform mass of A in se-quence, by decreasing order of viscosity.
4. The process according to Claim 3 wherein a predetermined amount of the molten, uniform mass of A is transferred into a second high intens-ity mixer and the ingredients of step B are added thereto.
5. The process according to Claim 4 wherein there is additionally present a filler, said filler being added during step B processing.
6. The process according to Claim 5 wherein, there is present from about 5 to about 15 parts by weight of elastomer, from about 5 to about 25 parts by weight of elastomer solvent, from about 10 to about 30 parts by weight of oleaginous plasticizer, from about 5 to about 25 parts by weight of hydrophobic plasticizer, from about 1 to about 35 parts by weight of vinyl polymer, from about 2 to about 10 parts by weight of emul-sifier and from 1 to 35 parts by weight of filler.
7. The process according to Claim 5 wherein there is additionally present an antioxidant, said antioxidant being added by pre-blending with one of the ingredients of A or B.
8. The process according to Claim 5 wherein there is additionally present a pigment, said pigment being added during step B processing.
9. A chewing gum base prepared according to the process of Claim 1.
10. A chewing gum base prepared according to the process of Claim 5.
11. A two-stage process for preparing a chewing gum base using solid elastomer which comprises:
A. A first step wherein solid elastomer, an elastomer solvent, a hydrophobic plasticizer, an emulsifier and an oleaginous plasticizer are subjected to high intensity mixing under high shear conditions until a mol-ten, uniform mass is obtained; said solid elastomer being initially sub-jected to said high intensity mixing to masticate said solid elastomer until a uniform, lump-free mass is obtained, followed by the step-wise ad-dition of said elastomer solvent with continuous high intensity mixing, followed by the step-wise addition of said hydrophobic plasticizer with continuous high intensity mixing; followed by the step-wise addition of said emulsifier with continuous high intensity mixing; followed by the step-wise addition of said oleaginous plasticizer with continuous high in-tensity mixing; and B. a second stage wherein an oleaginous plasticizer, a non-toxic vinyl polymer and emulsifier are added to the molten, uniform mass of A, said second stage ingredients being added step-wise to the molten uniform mass of A with continuous high intensity mixing under high shear conditions;
said high intensity mixing being continued until a uniform blend of ingred-ients is obtained.
A. A first step wherein solid elastomer, an elastomer solvent, a hydrophobic plasticizer, an emulsifier and an oleaginous plasticizer are subjected to high intensity mixing under high shear conditions until a mol-ten, uniform mass is obtained; said solid elastomer being initially sub-jected to said high intensity mixing to masticate said solid elastomer until a uniform, lump-free mass is obtained, followed by the step-wise ad-dition of said elastomer solvent with continuous high intensity mixing, followed by the step-wise addition of said hydrophobic plasticizer with continuous high intensity mixing; followed by the step-wise addition of said emulsifier with continuous high intensity mixing; followed by the step-wise addition of said oleaginous plasticizer with continuous high in-tensity mixing; and B. a second stage wherein an oleaginous plasticizer, a non-toxic vinyl polymer and emulsifier are added to the molten, uniform mass of A, said second stage ingredients being added step-wise to the molten uniform mass of A with continuous high intensity mixing under high shear conditions;
said high intensity mixing being continued until a uniform blend of ingred-ients is obtained.
12. The process according to Claim 11 wherein the process is con-ducted in a single high intensity mixer in a continuous manner.
13. The process according to Claim 11 wherein, in step B, the oleag-inous plasticizer, vinyl polymer and emulsifier are added, step-wise to the molten, uniform mass of A in sequence, by decreasing order of viscosity.
14. The process according to Claim 13 wherein a predetermined amount of the molten, uniform mass of A is transferred into a second high intensity mixer and the ingredients of step B are added thereto.
15. The process according to Claim 14 wherein there is additionally present a filler, said filler being added during step B processing.
16. The process according to Claim 15 wherein there is present from about 5 to about 15 parts by weight of elastomer, from about 5 to about 25 parts by weight of elastomer solvent, from about 5 to about 25 parts by weight of hydrophobic plasticizer, from about 10 to about 30 parts by weight of oleaginous plasticizer, from about 2 to about 10 parts by weight of emul-sifier, from about 1 to about 35 parts by weight of vinyl polymer and from 1 to 35 parts by weight of filler.
17. The process according to Claim 15 wherein there is additionally present an antioxidant, said antioxidant being added by pre-blending with one of the ingredients in A or B.
18. The process according to Claim 15 wherein there is additionally present a pigment, said pigment being added during step B processing.
19. A chewing gum base prepared according to the process of Claim 11.
20. A chewing gum base prepared according to the process of Claim 15.
21. A two-stage process for preparing a chewing gum base using solid elastomer which comprises:
A. a first stage wherein solid elastomer, an elastomer solvent and an oleaginous plasticizer are subjected to high intensity mixing under high shear conditions until a molten, uniform mass is obtained, said solid elastomer being initially subjected to said high intensity mixing to masti-cate said solid elastomer until a uniform, lump-free mass is obtained, fol-lowed by the step-wise addition of said elastomer solvent with continuous high intensity mixing, followed by the step-wise addition of said oleaginous plasticizer with continuous high intensity mixing; and B. a second stage wherein a hydrophobic plasticizer, an oleag-inous plasticizer and an emulsifier are added to the molten, uniform mass of step A; said second stage ingredients being added step-wise to the molten, uniform mass of A with continuous high intensity mixing under high shear conditions; said high intensity mixing being continued until a uniform blend of ingredients is obtained.
A. a first stage wherein solid elastomer, an elastomer solvent and an oleaginous plasticizer are subjected to high intensity mixing under high shear conditions until a molten, uniform mass is obtained, said solid elastomer being initially subjected to said high intensity mixing to masti-cate said solid elastomer until a uniform, lump-free mass is obtained, fol-lowed by the step-wise addition of said elastomer solvent with continuous high intensity mixing, followed by the step-wise addition of said oleaginous plasticizer with continuous high intensity mixing; and B. a second stage wherein a hydrophobic plasticizer, an oleag-inous plasticizer and an emulsifier are added to the molten, uniform mass of step A; said second stage ingredients being added step-wise to the molten, uniform mass of A with continuous high intensity mixing under high shear conditions; said high intensity mixing being continued until a uniform blend of ingredients is obtained.
22. The process according to Claim 21 wherein the process is conducted in a single high intensity mixer in a continuous manner.
23. The process according to Claim 21 wherein, in step B, the hydro-phobic plasticizer, oleaginous plasticizer and emulsifier are added, step-wise, to the molten mass of A in sequence, by decreasing order of viscos-ity.
24. The process according to Claim 23 wherein a predetermined amount of the molten, uniform mass of A is transferred into a second high intensity mixer and the ingredients of step B are added thereto.
25. The process according to Claim 24 wherein there is additionally present a filler, said filler being added during step B processing.
26. A process according to Claim 25 wherein there is present from about 5 to about 15 parts by weight of elastomer, from about 5 to about 25 parts by weight of elastomer solvent, from about 10 to about 30 parts by weight of oleaginous plasticizer, from about 5 to about 25 parts by weight of hydrophobic plasticizer, from about 2 to about 10 parts by weight of emulsifier and from 1 to 35 parts by weight of filler.
27. The process according to Claim 25 wherein there is additionally present an antioxidant, said antioxidant being added by pre-blending with one of the ingredients in A or B.
28. The process according to Claim 25 wherein there is additionally present a pigment, said pigment being added during step B processing.
29. A chewing gum base prepared according to the process of Claim 21.
30. A chewing gum base prepared according to the process of Claim 25.
31. A two-stage process for preparing a chewing gum base using solid elastomer which comprises:
A. a first stage wherein solid elastomer, an elastomer solvent, an oleaginous plasticizer and an emulsifier are subjected to high intensity mixing under high shear conditions until a molten, uniform mass is obtained;
said solid elastomer being initially subjected to said high intensity mixing to masticate said solid elastomer until a uniform, lump-free mass is ob-tained, followed by the step-wise addition of said elastomer solvent with continuous high intensity mixing followed by the step-wise addition of said oleaginous plasticizer with continuous high intensity mixing, followed by the stepwise addition of said emulsifier with continuous high intensity mix-ing; and B. a second stage wherein a hydrophobic plasticizer, an oleag-inous plasticizer, a non-toxic vinyl polymer and an emulsifier are added to the molten, uniform mass of A; said second stage ingredients being added step-wise to the molten, uniform mass of A with continuous high intensity mixing under high shear conditions; said high intensity mixing being con-tinued until a uniform blend of ingredients is obtained.
A. a first stage wherein solid elastomer, an elastomer solvent, an oleaginous plasticizer and an emulsifier are subjected to high intensity mixing under high shear conditions until a molten, uniform mass is obtained;
said solid elastomer being initially subjected to said high intensity mixing to masticate said solid elastomer until a uniform, lump-free mass is ob-tained, followed by the step-wise addition of said elastomer solvent with continuous high intensity mixing followed by the step-wise addition of said oleaginous plasticizer with continuous high intensity mixing, followed by the stepwise addition of said emulsifier with continuous high intensity mix-ing; and B. a second stage wherein a hydrophobic plasticizer, an oleag-inous plasticizer, a non-toxic vinyl polymer and an emulsifier are added to the molten, uniform mass of A; said second stage ingredients being added step-wise to the molten, uniform mass of A with continuous high intensity mixing under high shear conditions; said high intensity mixing being con-tinued until a uniform blend of ingredients is obtained.
32. The process according to Claim 31 wherein the process is con-ducted in a single high intensity mixer in a continuous manner.
33. The process according to Claim 31 wherein, in step B, the hydro-phobic plasticizer, oleaginous plasticizer, the vinyl polymers and the emul-sifier are added, step-wise, to the molten, uniform mass of A in sequence by decreasing order of viscosity.
34. The process according to Claim 33 wherein a predetermined amount of the molten, uniform mass of A is transferred into a second high intensity mixer and the ingredients of step B are added thereto.
35. The process according to Claim 34 wherein there is additionally present a filler, said filler being added during step B processing.
36. The process according to Claim 35 wherein there is present from about 5 to about 15 parts by weight of solid elastomer, from about 5 to about 25 parts by weight of elastomer solvent, from about 10 to about 30 parts by weight of oleaginous plasticizer, from about 2 to about 10 parts by weight of emulsifier, from about 5 to about 25 parts by weight of hydro-phobic plasticizer, from about 1 to about 35 parts by weight of vinyl poly-mer and from 1 to about 35 parts by weight of filler.
37. The process according to Claim 35 wherein there is additionally present antioxidant, said antioxidant being added by pre-blending with one of the ingredients in A or B.
38. The process according to Claim 35 wherein there is additionally present a pigment, said pigment being added during step B processing.
39. A chewing gum base prepared according to the process of Claim 31.
40. A chewing gum base prepared according to the process of Claim 35.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000326809A CA1118629A (en) | 1979-05-02 | 1979-05-02 | Process for preparing chewing gum base using solid elastomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000326809A CA1118629A (en) | 1979-05-02 | 1979-05-02 | Process for preparing chewing gum base using solid elastomer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1118629A true CA1118629A (en) | 1982-02-23 |
Family
ID=4114116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000326809A Expired CA1118629A (en) | 1979-05-02 | 1979-05-02 | Process for preparing chewing gum base using solid elastomer |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1118629A (en) |
-
1979
- 1979-05-02 CA CA000326809A patent/CA1118629A/en not_active Expired
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