CN104480233A - Safety environmental-friendly water-emulsified drum degreasing agent, and preparation method and applications thereof - Google Patents

Abstract

The invention relates to the field of animal fur treatment technology, in particular to a safe and environment-friendly water-emulsion drum degreasing agent, a preparation method and an application. Prepared from the following raw materials in weight ratio: 10-50 parts of solvent oil; 5-20 parts of emulsifier; 1-10 parts of stabilizer; 20-100 parts of deionized water; wherein the solvent oil is: petroleum spirit D60 , odorless turpentine, a mixture of any one or more of dodecane; the emulsifier is: any one of AEO9, AEO7, lauryl amidopropyl betaine, coconut oil fatty acid diethanolamide or Various mixtures; the stabilizer is: 1.2-propanediol or cetyl alcohol, or a mixture of the two. It can effectively remove the oil after oil tanning of fine leather, and has strong degreasing ability, making the fur clean and smooth; it is also safe and environmentally friendly. It is an environmentally friendly detergent, has no unpleasant smell, and is easy to use.

Description

A safe and environmentally friendly water-emulsion drum degreasing agent, its preparation method and application

technical field

The invention relates to the field of animal fur treatment technology, in particular to a safe and environment-friendly water-emulsion drum degreasing agent, a preparation method and an application.

Background technique

In the process of tanning or fur manufacturing, degreasing is a very critical process for raw hides and skins with high oil content. Only by removing the natural oil contained in the bare leather to a certain extent, can the collagen fibers be loosened, creating favorable conditions for the smooth progress of the subsequent tanning and other processes, and making the finished leather reach the ideal state, otherwise due to the natural oil contained in the leather plate According to water, it will make it difficult to carry out the subsequent tanning, fatliquoring, dyeing, finishing and other processes smoothly, resulting in stiff hand feeling of finished leather, strong greasy surface, and easy peeling off of the coating. Therefore, for sheepskin and pigskin with high oil content, better degreasing materials must be selected for effective degreasing in order to produce high-quality leather and fur products.

However, when fine-wool sheep shearing products and fine leather are processed, because the fur on such products is relatively delicate and difficult to straighten out, so after degreasing and tanning it in the early stage, it is still necessary to process it in the later stage. Oil tanning is required to keep the coat smooth and frizz-free. However, after oil tanning, it is necessary to degrease the surface of the product so that the fur surface is not greasy and dry.

At present, drum degreasing agent and solvent-based degreasing agent are widely used, but solvent-based degreasing agents are either ODS solvents that can damage the ozone layer, or are toxic and harmful to the human body, or are flammable and explosive to the production environment. The cleaning solution also pollutes the environment and is not easy to handle.

The existing commercially available drum degreasing agent is a dry-cleaning drum degreasing agent, which is directly mixed with wood chaff or sawdust, and then degreased in the drum in a manner of rolling wood chaff, so that no polluting aqueous solution will be produced, and The solid waste of wood chaff is easy to handle.

However, the drum degreasing agent most used at present is tetrachlorethylene, and tetrachlorethylene is harmful to the human body, destroys the ozone layer, is not environmentally friendly, and has been banned by the European Union. So it is imperative to find a new type of drum degreasing agent, and it is also a worldwide problem.

In view of this, the present invention is proposed.

Contents of the invention

The purpose of the present invention is to provide a safe and environmentally friendly water-emulsion drum degreasing agent, which can effectively remove the oil after oil tanning of fine leather, has strong degreasing ability, and makes the fur clean and smooth; it is also safe and environmentally friendly, and is an environmentally friendly Detergent, no unpleasant smell, easy to use.

Another object of the present invention is to provide a preparation method and application of a safe and environment-friendly water-emulsion type drum degreasing agent.

In order to realize the above-mentioned purpose of the present invention, special adopt following technical scheme:

A safe and environmentally friendly water-emulsion drum degreasing agent, prepared from the following raw materials in weight ratio:

Wherein said solvent oil is: any one or more mixtures of petroleum spirit D60, odorless turpentine, dodecane;

The emulsifier is: any one or more mixtures of AEO9, AEO7, lauryl amidopropyl betaine, and coconut oil fatty acid diethanolamide;

The stabilizer is: 1.2-propanediol or cetyl alcohol, or a mixture of the two.

Among them, the choice of emulsifier has a direct impact on the stability of the emulsion. In order to obtain a stable emulsion, it is necessary to select a surfactant that can emulsify solvent oil and has good biodegradability as an emulsifier. Therefore, select any one or more mixtures of fatty alcohol polyoxyethylene ether (AEO9), (AEO7), lauryl amidopropyl betaine, coconut oil fatty acid diethanolamide as the emulsifier in this scheme ; The principles to be followed in the selection of solvent oil are: (1) strong ability to dissolve oil (2) no irritating smell (3) safe and environmentally friendly, non-toxic, and high flash point. Therefore, the present invention selects any one or more mixtures of environment-friendly organic solvent petroleum spirit D60, odorless turpentine, and dodecane.

The invention adopts biodegradable surfactant fatty alcohol polyoxyethylene ether and environment-friendly organic solvent as the cleaning base material of the system, and uses a stabilizer to ensure the stability of the product.

The present invention adopts emulsification compounding technology, organic solvent solvent oil and surfactant emulsifier and water are compounded into water-emulsion type degreasing agent, when lipophilic organic solvent exists in emulsified state in surfactant aqueous solution, both play a role The synergistic effect makes the cleaning power better. At the same time, because the organic solvent not only easily emits irritating gas under the condition of being alone, but also is flammable and explosive, and in this state, the organic solvent is dissolved in the surfactant aqueous solution, and can be used under relatively safe and hygienic conditions. It overcomes the shortcomings of simple solvents that are flammable and explosive, and also overcomes the shortcomings of simple water-soluble degreasing agents that cannot be dry-cleaned.

The invention can effectively remove the oil after oil tanning of fine leather, has strong degreasing ability, and makes the fur clean and smooth. It can replace tetrachlorethylene, is safe and environment-friendly, is an environmentally friendly detergent, has no unpleasant smell, and is easy to use.

Further, it is prepared from raw materials with the following weight ratio:

Further, it is prepared from raw materials with the following weight ratio:

The present invention also provides a method for preparing the aforesaid safe and environment-friendly water-emulsion type drum degreasing agent, comprising the following steps:

1) Add the said parts of emulsifier, stabilizer and solvent oil into the reactor in sequence, heat to 50-60°C, and stir evenly;

2) Add the said number of deionized water while stirring, and continue stirring at constant temperature for 40-45 minutes;

3) Lower the temperature to 30-40°C, stir for another 15-20 minutes, cool to room temperature, let stand and then discharge to obtain a white milky liquid product, which is a safe and environmentally friendly water-emulsion drum degreasing agent.

The present invention heats and dissolves the oil-soluble components and emulsifiers through three process steps of chemical material in the early stage, emulsification in the middle stage, and aging in the later stage, and emulsification is realized by adding water at a certain temperature and stirring, and then aging is realized by stirring and lowering the temperature, which is easy to operate. The obtained emulsion drum degreasing agent is fine and stable, and its degreasing effect is better.

Further, the reactor is an enamel emulsification kettle.

Further, in step 1), the heating temperature is 55°C.

Further, in step 2), the stirring time is 40 minutes.

Further, in step 3), the temperature was lowered to 35° C. and stirred for 16-18 minutes.

Further, in step 3), the standing time is 5-10 minutes.

The present invention also provides the application of the aforesaid safe and environment-friendly water-emulsion drum degreasing agent in drum degreasing of fur.

Compared with prior art, the beneficial effect of the present invention is:

(1) It can effectively remove the oil after oil tanning of fine leather, and has strong degreasing ability, making the fur clean and smooth. At the same time, it also overcomes the shortcoming that pure water-soluble degreasing agent sticky hair cannot be dry-cleaned.

(2) Safe and environmentally friendly, it is an environmentally friendly detergent with no unpleasant smell and easy to use.

(3) The drum degreasing agent prepared by the method provided by the invention is an emulsion with good stability and better degreasing effect.

Detailed ways

Embodiments of the present invention will be described in detail below in conjunction with examples, but those skilled in the art will understand that the following examples are only for illustrating the present invention, and should not be considered as limiting the scope of the present invention. Those who do not indicate the specific conditions in the examples are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used were not indicated by the manufacturer, and they were all conventional products that could be purchased from the market.

A safe and environmentally friendly water-emulsion drum degreasing agent, prepared from the following raw materials in weight ratio:

Wherein said solvent oil is: any one or more mixtures of petroleum spirit D60, odorless turpentine, dodecane;

The emulsifier is: any one or more mixtures of AEO9, AEO7, lauryl amidopropyl betaine, and coconut oil fatty acid diethanolamide;

The stabilizer is: 1.2-propanediol or cetyl alcohol, or a mixture of the two.

Preferably, it is prepared from the following raw materials in weight ratio:

Preferably, it is prepared from the following raw materials in weight ratio:

Among them, the choice of emulsifier has a direct impact on the stability of the emulsion. In order to obtain a stable emulsion, it is necessary to select a surfactant that can emulsify solvent oil and has good biodegradability as an emulsifier. Therefore, select any one or more mixtures of fatty alcohol polyoxyethylene ether (AEO9), (AEO7), lauryl amidopropyl betaine, coconut oil fatty acid diethanolamide as the emulsifier in this scheme ; The principles to be followed in the selection of solvent oil are: (1) strong ability to dissolve oil (2) no irritating smell (3) safe and environmentally friendly, non-toxic, and high flash point. Therefore, the present invention selects any one or more mixtures of environment-friendly organic solvent petroleum spirit D60, odorless turpentine, and dodecane.

The invention adopts biodegradable surfactant fatty alcohol polyoxyethylene ether and environment-friendly organic solvent as the cleaning base material of the system, and uses a stabilizer to ensure the stability of the product.

The present invention adopts emulsification compounding technology, organic solvent solvent oil and surfactant emulsifier and water are compounded into water-emulsion type degreasing agent, when lipophilic organic solvent exists in emulsified state in surfactant aqueous solution, both play a role The synergistic effect makes the cleaning power better. At the same time, because the organic solvent not only easily emits irritating gas under the condition of being alone, but also is flammable and explosive, and in this state, the organic solvent is dissolved in the surfactant aqueous solution, and can be used under relatively safe and hygienic conditions. It overcomes the shortcomings of simple solvents that are flammable and explosive, and also overcomes the shortcomings of simple water-soluble degreasing agents that cannot be dry-cleaned.

The invention can effectively remove the oil after oil tanning of fine leather, has strong degreasing ability, and makes the fur clean and smooth. It can replace tetrachlorethylene, is safe and environment-friendly, is an environmentally friendly detergent, has no unpleasant smell, and is easy to use.

The present invention also provides a method for preparing the aforesaid safe and environment-friendly water-emulsion type drum degreasing agent, comprising the following steps:

1) Add the said parts of emulsifier, stabilizer and solvent oil into the reactor in sequence, heat to 50-60°C, and stir evenly;

In order to improve the reaction stability without introducing new impurities, preferably, the reactor is an enamel emulsification tank.

Preferably, when the reaction is heated in the reactor, the heating temperature is optimally heated to 55°C.

2) Add the said number of deionized water while stirring, and continue stirring at constant temperature for 40-45 minutes;

In order to improve the stability of the emulsion finally made, the time of constant temperature stirring is preferably 40 minutes.

3) Lower the temperature to 30-40°C, stir for another 15-20 minutes, cool to room temperature, let stand and then discharge to obtain a white milky liquid product, which is a safe and environmentally friendly water-emulsion drum degreasing agent.

Preferably, when the temperature drops to 35°C, stirring for 16-18 minutes has a better emulsifying effect.

In order to make each component more stable, the standing time is preferably 5-10 minutes.

The present invention heats and dissolves the oil-soluble components and emulsifiers through three process steps of chemical material in the early stage, emulsification in the middle stage, and aging in the later stage, and emulsification is realized by adding water at a certain temperature and stirring, and then aging is realized by stirring and lowering the temperature, which is easy to operate. The obtained emulsion drum degreasing agent is fine and stable, and its degreasing effect is better.

Example 1

The preparation of safe and environment-friendly water-emulsion type drum degreasing agent comprises steps:

(1) 5 parts of fatty alcohol polyoxyethylene ether (AEO9), 4 parts of fatty alcohol polyoxyethylene ether (AEO7), 5 parts of lauryl amidopropyl betaine, 2 parts of 1.2-propylene glycol, petroleum spirit ( Add 25 parts of D60) into the emulsification kettle in turn, heat at 50-60°C and stir evenly;

(2) Slowly add 45 parts of deionized water while stirring, and stir at constant temperature for 40 minutes;

(3) Lower the temperature to below 40° C., stir for another 20 minutes, cool to room temperature, let stand, and discharge to obtain a white milky liquid product.

Example 2

The preparation of safe and environment-friendly water-emulsion type drum degreasing agent comprises steps:

(1) 10 parts of fatty alcohol polyoxyethylene ether (AEO9), 5 parts of fatty alcohol polyoxyethylene ether (AEO7), 6 parts of lauryl amidopropyl betaine, 4 parts of 1.2-propylene glycol, petroleum spirit ( Add 40 parts of D60) into the emulsification kettle in turn, heat at 50-60°C and stir evenly;

(2) Slowly add 50 parts of deionized water while stirring, and stir at constant temperature for 40 minutes;

(3) Lower the temperature to below 40° C., stir for another 20 minutes, cool to room temperature, let stand, and discharge to obtain a white milky liquid product.

Example 3

The preparation of safe and environment-friendly water-emulsion type drum degreasing agent comprises steps:

(1) Add 10 parts of fatty alcohol polyoxyethylene ether (AEO9), 8 parts of coconut oil fatty acid diethanolamide, 4 parts of 1.2-propylene glycol, and 20 parts of odorless turpentine into the emulsification kettle in turn, heat at 50-60°C and stir evenly;

(2) Slowly add 80 parts of deionized water while stirring, and stir at constant temperature for 40 minutes;

(3) Lower the temperature to below 40° C., stir for another 20 minutes, cool to room temperature, let stand, and discharge to obtain a white milky liquid product.

Example 4

The preparation of safe and environment-friendly water-emulsion type drum degreasing agent comprises steps:

(1) Add 12 parts of fatty alcohol polyoxyethylene ether (AEO9), 6 parts of lauryl amidopropyl betaine, 8 parts of coconut oil fatty acid diethanolamide, 2 parts of 1.2-propylene glycol, and 30 parts of odorless turpentine in order to emulsify In the kettle, heat at 50-60°C and stir evenly;

(2) Slowly add 60 parts of deionized water while stirring, and stir at constant temperature for 40 minutes;

(3) Lower the temperature to below 40° C., stir for another 20 minutes, cool to room temperature, let stand, and discharge to obtain a white milky liquid product.

Example 5

The preparation of safe and environment-friendly water-emulsion type drum degreasing agent comprises steps:

(1) Add 10 parts of fatty alcohol polyoxyethylene ether (AEO7), 6 parts of lauryl amidopropyl betaine, 5 parts of coconut oil fatty acid diethanolamide, 2 parts of cetyl alcohol, and 25 parts of dodecane in sequence In the emulsification kettle, heat at 50-60°C and stir evenly;

(2) Slowly add 30 parts of deionized water while stirring, and stir at constant temperature for 40 minutes;

(3) Lower the temperature to below 40° C., stir for another 20 minutes, cool to room temperature, let stand, and discharge to obtain a white milky liquid product.

Example 6

The preparation of safe and environment-friendly water-emulsion type drum degreasing agent comprises steps:

(1) Add 6 parts of fatty alcohol polyoxyethylene ether (AEO7), 15 parts of lauryl amidopropyl betaine, 6 parts of coconut oil fatty acid diethanolamide, 3 parts of 1.2-propylene glycol, and 30 parts of odorless turpentine in order to emulsify In the kettle, heat at 50-60°C and stir evenly;

(2) Slowly add 45 parts of deionized water while stirring, and stir at constant temperature for 40 minutes;

(3) Lower the temperature to below 40° C., stir for another 20 minutes, cool to room temperature, let stand, and discharge to obtain a white milky liquid product.

Example 7

The preparation of safe and environment-friendly water-emulsion type drum degreasing agent comprises steps:

(1) 6 parts of fatty alcohol polyoxyethylene ether (AEO9), 8 parts of fatty alcohol polyoxyethylene ether (AEO7), 15 parts of lauryl amidopropyl betaine, 5 parts of coconut oil fatty acid diethanolamide, Add 5 parts of cetyl alcohol and 35 parts of dodecane into the emulsification kettle in turn, heat at 50-60°C and stir evenly;

(2) Slowly add 50 parts of deionized water while stirring, and stir at constant temperature for 40 minutes;

(3) Lower the temperature to below 40° C., stir for another 20 minutes, cool to room temperature, let stand, and discharge to obtain a white milky liquid product.

Example 8

The preparation of safe and environment-friendly water-emulsion type drum degreasing agent comprises steps:

(1) 9 parts of fatty alcohol polyoxyethylene ether (AEO9), 6 parts of fatty alcohol polyoxyethylene ether (AEO7), 15 parts of lauryl amidopropyl betaine, 4 parts of coconut oil fatty acid diethanolamide, 1.2 - Add 4 parts of propylene glycol and 40 parts of white spirit (D60) into the emulsification kettle in turn, heat at 50-60°C and stir evenly;

(2) Slowly add 65 parts of deionized water while stirring, and stir at constant temperature for 40 minutes;

(3) Lower the temperature to below 40° C., stir for another 20 minutes, cool to room temperature, let stand, and discharge to obtain a white milky liquid product.

Experimental example 1

Application of the product of the present invention in the degreasing aspect of fur drum

The degreasing agent obtained in Examples 1-8 is mixed with wood chaff and the oil-tanned mink skin is degreased in a rotating drum in the manner of turning the wood chaff.

Specifically: Add 20 kg of wood bran into a 50-liter drum, add 0.5 liter of degreasing agent, add 5 pieces of mink skins after oil tanning, and degrease for 2 hours at room temperature.

Adopt above-mentioned same method to carry out degreasing to the mink skin after the oil tanning with tetrachlorethylene as degreasing agent.

Comparing the product of the present invention with the existing product, it is found that the degreasing rate of the product of the present invention is higher than that of the existing product; and the hair quilt after degreasing is smooth, while the hair quilt of the existing product is rough; the most important product of the present invention is safe and environmentally friendly, without stimulation Harmful odor, while existing products are not environmentally friendly, prohibited, and have a pungent odor. The results are shown in the table below.

Degreasing rate (%)=(mass fraction of grease before degreasing-mass fraction of grease after degreasing)×100/mass fraction of grease before degreasing

The fat content of the skin sample before and after degreasing was determined by the dichloromethane Soxhlet extraction method:

Grease (%)=(extraction bottle and oil quality-extraction bottle quality)×100/sample quality

Judgment criteria for the smoothness of the wool quilt: touch and observe with hands, measure it from the aspects of hand feel, bulkiness and glossiness, find a degreased mink fur that is recognized by the market as a comparison, the comparison sample is grade 3, which is a little better than it It is grade 4, much better is grade 5, slightly worse than it is grade 2, and much worse is grade 1.

Evaluation criteria for environmental protection requirements: measured from five aspects: toxicity, pungent odor, impact on the atmospheric environment, flammability and biodegradability of the product.

Among them, according to the smoothness of the fur after degreasing, it is divided into 1-5 grades, and according to environmental protection requirements, it is divided into 1-5 grades, corresponding to five grades: very poor, poor, average, good, and very good.

Table 1 Degreasing rate

Drum degreaser name Skimming rate% The drum degreasing agent that the embodiment of the present invention 1 provides 74.1 The drum degreasing agent that the embodiment of the present invention 2 provides 75.2 The drum degreasing agent that the embodiment of the present invention 3 provides 78.6 The drum degreasing agent that the embodiment of the present invention 4 provides 76.3 The drum degreasing agent that the embodiment of the present invention 5 provides 80.5 The drum degreasing agent that the embodiment of the present invention 6 provides 74.2 The drum degreasing agent that the embodiment of the present invention 7 provides 73.1 The drum degreasing agent that the embodiment of the present invention 8 provides 79.2 tetrachlorethylene 68.8

Table 2 Smooth effect of coat

Drum degreaser name Coat smooth effect The drum degreasing agent that the embodiment of the present invention 1 provides 5 The drum degreasing agent that the embodiment of the present invention 2 provides 5 The drum degreasing agent that the embodiment of the present invention 3 provides 5 The drum degreasing agent that the embodiment of the present invention 4 provides 4 The drum degreasing agent that the embodiment of the present invention 5 provides 5 The drum degreasing agent that the embodiment of the present invention 6 provides 4 The drum degreasing agent that the embodiment of the present invention 7 provides 4 The drum degreasing agent that the embodiment of the present invention 8 provides 4 tetrachlorethylene 2

Table 3 Product Environmental Requirements

Drum degreaser name Product Environmental Requirements The drum degreasing agent that the embodiment of the present invention 1 provides 5

The drum degreasing agent that the embodiment of the present invention 2 provides 4 The drum degreasing agent that the embodiment of the present invention 3 provides 5 The drum degreasing agent that the embodiment of the present invention 4 provides 5 The drum degreasing agent that the embodiment of the present invention 5 provides 5 The drum degreasing agent that the embodiment of the present invention 6 provides 5 The drum degreasing agent that the embodiment of the present invention 7 provides 4 The drum degreasing agent that the embodiment of the present invention 8 provides 5 tetrachlorethylene 1

While particular embodiments of the invention have been illustrated and described, it should be appreciated that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims (10)

1. a safety and environmental protection water-latex type rotary drum grease-removing agent, is characterized in that, is prepared from by the raw material of following weight proportion:

Wherein said solvent oil is: any one or multiple mixture in petroleum spirit D60, tasteless turps, dodecane hydrocarbon;

Described emulsifying agent is: any one or multiple mixture in AEO9, AEO7, laurylamide CAB, fatty acid distribution of coconut oil diglycollic amide;

Described stablizer is: 1.2-propylene glycol or hexadecanol, or the mixture of the two.

2. a kind of safety and environmental protection water-latex type rotary drum grease-removing agent according to claim 1, is characterized in that, be prepared from by the raw material of following weight proportion:

3. a kind of safety and environmental protection water-latex type rotary drum grease-removing agent according to claim 1, is characterized in that, be prepared from by the raw material of following weight proportion:

4. prepare the method for a kind of safety and environmental protection water-latex type rotary drum grease-removing agent described in any one of claim 1-3, it is characterized in that, comprise the following steps:

1) emulsifying agent of described number, stablizer and solvent oil are added in reactor successively, be heated to 50-60 DEG C, stir;

2) add the deionized water of described number while stirring, and continue constant temperature stirring 40-45 minute;

3) cool the temperature to 30-40 DEG C, then stir 15-20 minute, cool to room temperature, discharging after leaving standstill, obtains white " milky " liquid product and is safety and environmental protection water-latex type rotary drum grease-removing agent.

5. method according to claim 4, is characterized in that, described reactor is enamel emulsifying kettle.

6. method according to claim 4, is characterized in that,

Step 1) in, described Heating temperature is 55 DEG C.

7. method according to claim 4, is characterized in that,

Step 2) in, described churning time is 40 minutes.

8. method according to claim 4, is characterized in that,

Step 3) in, described temperature is down to 35 DEG C, and stirs 16-18 minute.

9. method according to claim 4, is characterized in that,

Step 3) in, the described standing time is 5-10 minute.

10. the application of a kind of safety and environmental protection water-latex type rotary drum grease-removing agent in drum for fur degreasing described in any one of claim 1-3.