CN113952763A - Composition for temporary marking - Google Patents
Composition for temporary marking Download PDFInfo
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- CN113952763A CN113952763A CN202010629447.0A CN202010629447A CN113952763A CN 113952763 A CN113952763 A CN 113952763A CN 202010629447 A CN202010629447 A CN 202010629447A CN 113952763 A CN113952763 A CN 113952763A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
- B01D19/0409—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing Si-atoms
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- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Preparation (AREA)
- Cosmetics (AREA)
Abstract
The invention belongs to the field of foam marking, and particularly relates to a composition which is used for temporary marking and has accurately controllable foam duration. The composition contains a foaming agent, a special antifoaming agent, ethanol and water, and is prepared by uniformly mixing, filling and filling a propellant, wherein the foaming agent comprises sodium dodecyl sulfate and tween 20. The composition has the advantages of simple prescription, accurate and controllable foam duration, can be normally used at a higher temperature or a lower temperature, is suitable for temporary marks in a plurality of fields such as medicine, sports, engineering and the like, and can not leave stains to influence the attractiveness of a carrier.
Description
Technical Field
The invention belongs to the field of foam marking, and particularly relates to a composition which is used for temporary marking and has accurately controllable foam duration and a preparation process thereof, which are suitable for temporary marking in a plurality of fields such as medicine, sports, traffic, engineering and the like, and can not leave stains to influence the attractiveness of a carrier.
Background
Temporary labeling on different substrates or carriers is in wide demand in numerous social activities, traffic, research and work, etc. Chinese patent CN1244645C relates to a method for temporary marking and defining distance using foaming composition in sports, such as marking and defining distance on sports stadium and football field, the main components include foaming promoter (0.5% -3%), foaming control agent or defoaming agent is amphoteric surfactant (content 1% -3%), thickening agent (10% -30%) and propellant (propane, 4% -6%). The foaming promoter/control agent combination, in the quantitative ratio of the effective volatile foam, can stabilize the foam within the range of 40-180 seconds, but the volatile foam rapidly volatilizes at higher temperatures, so that the foam cannot be kept stable, and the stability of the product is alleged to be relieved only by adding pigment, but the foam duration is inevitably changed. Besides, the marking method is the same as pigment marking, but the non-foam performance inevitably leaves stains to influence the attractiveness of the carrier, and the performance of the product is greatly influenced by the ambient temperature, so that the method has certain limitation in practical application.
Chinese patent CN102481480A relates to a foaming composition for generating temporary marks, the main components of which comprise foaming emulsifier with specific concentration, specific propellant, cation chelating agent with specific concentration and nontoxic preservative, wherein the specific foaming emulsifier is 0.5-5% of Tween 20, the specific propellant is butane-isobutane-propane, and the specific cation chelating agent is 0.2-3% of tetrasodium ethylenediaminetetraacetate. The foaming compositions disclosed in this patent are harsh in terms of the range of optional ingredients and difficult to achieve in a given time at different temperatures.
Chinese patent CN104624118A discloses a foaming agent with accurately controllable foam duration in the field of cosmetics, wherein the dosage of the foaming agent and the propellant is respectively 10% -20% and 20% -40%, the dosage of the emulsifier and the defoaming agent is 0.5% -5%, and when the temperature is constant, the foaming agent: defoaming agent: propellant ratio = (10-25): (1-2): (20-30), but the propellant or propellant of the product needs to be selected from the following components: at least two of LPG, nitrogen, dimethyl ether, HFC-134a or HFO-1234ze, with higher amounts of defoamer and products that do not tolerate temperature changes.
Thus, there is still a need in the art for foam marking products that have good sustained foam stability at various temperatures and for a specified period of time with low amounts of defoamer.
Disclosure of Invention
In view of the prior art, the invention aims to provide a composition which has few components, low consumption of a special defoaming agent, no influence from environmental factors and accurate and controllable foam duration time, can form clear and visible uniform foam at the moment of spraying, can accurately control the foam duration time, and does not leave stains after the foam is eliminated so as to adapt to different application occasions. The present inventors have now completed the present invention through research.
The invention relates to a composition for temporary marking comprising a foaming agent, a special defoamer, ethanol, water and a propellant.
According to the present invention, "%" in the present invention is generally used as "% by weight" unless otherwise specified.
According to the invention, the foaming agent is selected from sodium lauryl sulfate and/or tween 20.
According to the invention, the propellant is selected from any one of dimethyl ether, propane, butane, isobutane, propane and tetrafluoroethane.
According to the invention, the particular defoaming agent used in the present invention is selected from dimethicone or dimethicone with a small amount of added silica. The dimethyl silicone oil is used in an amount of 0.01 to 0.1 wt%, preferably 0.01 to 0.05 wt%, based on the weight of the composition.
According to the invention, the amount of silica added to the dimethicone is from 2 to 8% by weight, preferably from 3 to 5% by weight, more preferably 4% by weight, based on the weight of the dimethicone.
The invention further relates to the use of simethicone together with silicon dioxide for the preparation of products for temporary marking.
The invention further relates to a process for the preparation of a composition or product for temporary marking comprising:
a. mixing the silicon dioxide with the dimethyl silicone oil;
b. mixing sodium dodecyl sulfate, the product in the step a) and water, and stirring until the system is uniformly dispersed;
c. mixing tween 20 and absolute ethyl alcohol, stirring until the tween is completely dissolved, and then adding the obtained liquid into the liquid obtained in the step b);
d. filling the liquid obtained in c), sealing and filling the propellant.
Wherein the using amount of the silicon dioxide in the a) is 4 weight percent of that of the dimethyl silicone oil, the mixing temperature is preferably 60-150 ℃, and the heating time is more than 1 hour, and more preferably 100 ℃ for 2 hours.
The conditions under which the mixing of silica with dimethicone can produce a significant enhancement in defoaming capability are relatively broad, and the relatively high temperature can allow this effect to be achieved more rapidly. Wherein the mixing of the two is carried out in advance, before other steps are carried out or before other materials are added.
According to the composition for temporary marking, in order to determine the using amount of silicon dioxide contained in the composition during preparation of a special defoaming agent, the silicon dioxide and the dimethyl silicone oil are uniformly mixed and then placed at 100 ℃ for 2 hours, wherein the using amounts of the silicon dioxide are respectively 1%, 2%, 4%, 8% and 10% of the using amount of the dimethyl silicone oil, the silicon dioxide is taken out and added into an intermediate of the composition, and the defoaming effect of the composition is evaluated by detecting the foam duration time, and the result shows that when the using amount of the silicon dioxide is 2% -8% of the using amount of the dimethyl silicone oil, the defoaming effect of the composition is better, and is preferably 4%.
The defoaming effect of the special defoaming agent is evaluated by detecting the foam duration, and the result shows that the special defoaming agent prepared by the method can obviously reduce the foam duration when the consumption is lower than that of the special defoaming agent prepared by directly using dimethyl silicone oil.
According to the invention, it is advantageous to add a suitable amount of ethanol, preferably anhydrous ethanol, typically in an amount of 4% to 10%, preferably 6%.
According to the invention, the amount of sodium lauryl sulfate in the composition for temporary marking is 8-12%, preferably 10%.
According to the invention, the amount of tween 20 in the composition for temporary marking is generally 0.1% to 1%, preferably 0.3%.
According to the invention, the amount of propellant used in the composition for temporary marking is generally in the range of 10% to 30%, preferably 20%.
According to the invention, the composition for temporary marking comprises 8-12% of sodium dodecyl sulfate, 0.1-1% of tween 20, 0.01-0.05% of special antifoaming agent, 4-10% of ethanol, 10-30% of propellant and 45-78% of water.
As a specific embodiment of the present invention, the composition for temporary marking according to the present invention consists of 10% sodium lauryl sulfate, 0.3% tween 20, 0.01% special antifoaming agent, 6% ethanol, 20% propellant and 63.69% water.
As a specific embodiment of the present invention, the composition for temporary marking according to the present invention consists of 10% sodium lauryl sulfate, 0.3% tween 20, 0.03% special antifoaming agent, 6% ethanol, 20% propellant and 63.67% water.
As a specific embodiment of the present invention, the composition for temporary marking according to the present invention consists of 10% sodium lauryl sulfate, 0.3% tween 20, 0.05% special antifoaming agent, 6% ethanol, 20% propellant and 63.65% water.
According to the composition for temporary marking, the foam duration time of the composition can be accurately controlled within the range of 360 seconds at any temperature within the range of 0-35 ℃.
In the present invention, the method for detecting the foam duration of the composition for temporary marking is as follows:
(1) and (3) vertically placing a sample to be detected for 2 hours at a constant temperature of 20 ℃ so that the internal temperature of the sample is stable and then the sample is used for detection.
(2) Respectively placing the sample to be tested at 0 ℃, 5 ℃, 20 ℃ and 35 ℃, and keeping the constant temperature for 2 hours after the corresponding temperature is reached so as to balance the temperature of the system.
(3) The upper part of the foaming agent bottle body is held by wearing gloves, the valve is pressed to spray out the foam and start timing, the observation is carried out after standing one meter, and the timing is finished when the foam is completely eliminated.
(4) Each batch of samples was run in 3 replicates at the same temperature and the average was taken as the duration of foam at that temperature.
The composition for temporary marking is prepared by using water as a solvent and sodium dodecyl sulfate, tween 20, a special defoaming agent, ethanol and a propellant as raw materials. The composition has the advantages of uniform foam form, wide application range and simple preparation process, and the foam duration time is accurately controlled by adjusting the dosage of the special defoaming agent and is not influenced by temperature.
The specific implementation mode is as follows:
the present invention is further illustrated below with reference to examples, which are intended to be illustrative only and not limiting.
EXAMPLE 1 preparation and evaluation of specific defoaming agent
First, the influence of the heating temperature and heating time of the special defoaming agent on the defoaming effect of the composition
0.4g of silicon dioxide and 10g of dimethyl silicone oil, namely the amount of the silicon dioxide is 4% of the amount of the dimethyl silicone oil, the silicon dioxide and the dimethyl silicone oil are uniformly mixed and then respectively placed at room temperature, 60 ℃, 80 ℃, 100 ℃, 120 ℃ and 150 ℃, samples are respectively taken at each temperature node for 0.5 hour, 1 hour, 2 hours, 4 hours, 8 hours, 16 hours, 24 hours and one week, the samples are added into an intermediate of the composition, the defoaming effect of the composition is evaluated by detecting the foam duration time, and the result shows that the composition has better defoaming effect when placed at room temperature (20 ℃ -25 ℃) to 200 ℃ for more than 1 hour, preferably heated at 60 ℃ -150 ℃ for more than 1 hour, and more preferably heated at 100 ℃ for 2 hours.
Secondly, the influence of the silicon dioxide dosage in the special defoaming agent on the defoaming effect of the composition
The preparation method comprises the following steps of uniformly mixing silicon dioxide and simethicone, placing the mixture at 100 ℃ for 2 hours, wherein the dosage of the simethicone is 10g, and the dosages of the silicon dioxide are 1%, 2%, 4%, 8% and 10% of the dosage of the simethicone respectively, taking the mixture out, adding the mixture into an intermediate of the composition, and evaluating the effect of the composition by detecting the foam duration, wherein the results are shown in the following table. As can be seen from the table, when the amount of the silicon dioxide is 2-8% of that of the dimethyl silicone oil, the defoaming effect of the composition is better, and the preferable amount is 4%.
Example 2 Effect of specific defoamer amounts on defoaming time for ethanol-free foams
First, prescription composition
Second, preparation process
(1) Uniformly mixing 0.2g of silicon dioxide and 5g of dimethyl silicone oil, and heating for 2 hours at 100 ℃ to obtain a special defoaming agent;
(2) weighing sodium dodecyl sulfate, a special defoaming agent and water according to a formula, and heating and stirring at 80 ℃ until the system is uniformly dispersed to obtain a material 1;
(3) weighing Tween 20 and anhydrous ethanol according to a prescription, heating and stirring at 65 ℃ until the Tween 20 and the anhydrous ethanol are completely dissolved, adding the material 1 while stirring to uniformly disperse the material, stopping heating, and continuously stirring to room temperature to obtain an intermediate;
(4) filling the intermediate, sealing, filling propellant, and adding actuator.
Third, foam duration detection
(1) Taking the formulas 1-5 as samples to be detected, respectively, vertically placing the samples at the constant temperature of 20 ℃ for 2 hours, and enabling the internal temperature of the samples to be stable for detection.
(2) The sample to be tested is respectively placed at 0 ℃, 5 ℃, 20 ℃ and 35 ℃ and kept for 2 hours at constant temperature after reaching the corresponding temperature, so as to balance the temperature of the system.
(3) The upper part of the foaming agent bottle body is held by wearing gloves, the valve is pressed to spray out the foam and start timing, the observation is carried out after standing one meter, and the timing is finished when the foam is completely eliminated.
(4) Each batch of samples was run in 3 replicates at the same temperature and the average was taken as the duration of foam at that temperature.
The composition was prepared based on the above method and the duration of foam was measured, and the results are shown in the following table. As can be seen from the table, when the dosage of the special defoaming agent is 0, the foam duration is over 20 minutes, and when the dosage of the special defoaming agent is in the range of 0.01% -0.1%, the foam duration is obviously reduced along with the increase of the dosage of the special defoaming agent. Meanwhile, the foam can be completely eliminated at the conditions of 5 ℃, 20 ℃ and 35 ℃, which shows that the prepared special defoaming agent has strong defoaming capability. However, the composition prepared according to this method had a foam not completely eliminated at 0 ℃ and a small amount of pasty residue remained.
Example 3 Effect of ethanol dosage on foam removal
First, prescription composition
Second, preparation process
(1) Uniformly mixing 0.4g of silicon dioxide and 10g of dimethyl silicone oil, and heating for 2 hours at 100 ℃ to obtain a special defoaming agent;
(2) weighing sodium dodecyl sulfate, a special defoaming agent and water according to a formula, and heating and stirring at 80 ℃ until the system is uniformly dispersed to obtain a material 1;
(3) weighing Tween 20 and anhydrous ethanol according to a prescription, heating and stirring at 65 ℃ until the Tween 20 and the anhydrous ethanol are completely dissolved, adding the material 1 while stirring to uniformly disperse the material, stopping heating, and continuously stirring to room temperature to obtain an intermediate;
(4) filling the intermediate, sealing, filling propellant, and adding actuator.
Influence of different ethanol dosage on foam elimination
(1) The samples to be tested in the formulas 1 to 6 of the embodiment are respectively taken as samples to be tested and vertically placed for 2 hours under the constant temperature condition of 20 ℃, so that the internal temperature is stabilized for detection.
(2) The sample to be tested is respectively placed at 0 ℃, 5 ℃, 20 ℃ and 35 ℃ and kept for 2 hours at constant temperature after reaching the corresponding temperature, so as to balance the temperature of the system.
(3) The upper part of the foaming agent bottle body is held by wearing gloves, the valve is pressed to spray out the foam and start timing, the observation is carried out after standing one meter, and the timing is finished when the foam is completely eliminated.
(4) Each batch of samples was run in 3 replicates at the same temperature and the average was taken as the duration of foam at that temperature.
The elimination of the phenomenon of pasty residues at 0 ℃ of the foam is improved by introducing anhydrous ethanol. The composition was prepared based on the above method and the duration of foam was measured, and the results are shown in the following table. As can be seen from the table, when absolute ethyl alcohol was not added, a small amount of cream remained after the foam was removed at 0 ℃ and the cream remained after the foam was removed was reduced with the addition of absolute ethyl alcohol. When the ethanol is used in an excessive amount, the foam duration is affected by the temperature, so that the foam duration at different temperatures is greatly different, and the foam duration is too short, even the foam formability is affected, thus the ethanol is determined to be used in an amount of 4% to 10%, preferably 6%.
EXAMPLE 4 Effect of amount of sodium lauryl sulfate on foam Elimination time
First, prescription composition
Second, preparation method
(1) Uniformly mixing 0.4g of silicon dioxide and 10g of dimethyl silicone oil, and heating for 2 hours at 100 ℃ to obtain a special defoaming agent;
(2) weighing sodium dodecyl sulfate, a special defoaming agent and water according to a formula, and heating and stirring at 80 ℃ until the system is uniformly dispersed to obtain a material 1;
(3) weighing Tween 20 and anhydrous ethanol according to a prescription, heating and stirring at 65 ℃ until the Tween 20 and the anhydrous ethanol are completely dissolved, adding the material 1 while stirring to uniformly disperse the material, stopping heating, and continuously stirring to room temperature to obtain an intermediate;
(4) filling the intermediate, sealing, filling propellant, and adding actuator.
Third, inspection of foam moldability
Compositions were prepared based on the above methods and the foam moldability was observed to investigate the effect of sodium lauryl sulfate on foam moldability, and the results are shown in the following table. The result shows that when the dosage of the sodium dodecyl sulfate exceeds 12 percent, the foam has paste residue after being eliminated at the temperature of 0 ℃; when the dosage of the sodium dodecyl sulfate is less than 8%, the foam is easy to collapse, so that the dosage of the sodium dodecyl sulfate is determined to be 8% -12%, and the preferred dosage is 10%.
EXAMPLE 5 Effect of Tween 20 amount on foam Elimination time
First, prescription composition
Second, preparation method
(1) Uniformly mixing 0.4g of silicon dioxide and 10g of dimethyl silicone oil, and heating for 2 hours at 100 ℃ to obtain a special defoaming agent;
(2) weighing sodium dodecyl sulfate, a special defoaming agent and water according to a formula, and heating and stirring at 80 ℃ until the system is uniformly dispersed to obtain a material 1;
(3) weighing Tween 20 and anhydrous ethanol according to a prescription, heating and stirring at 65 ℃ until the Tween 20 and the anhydrous ethanol are completely dissolved, adding the material 1 while stirring to uniformly disperse the material, stopping heating, and continuously stirring to room temperature to obtain an intermediate;
(4) filling the intermediate, sealing, filling propellant, and adding actuator.
Third, foam duration check
(1) The samples to be tested in the formulas 1 to 6 of the embodiment are respectively taken as samples to be tested and vertically placed for 2 hours under the constant temperature condition of 20 ℃, so that the internal temperature is stabilized for detection.
(2) The sample to be tested is respectively placed at 0 ℃, 5 ℃, 20 ℃ and 35 ℃ and kept for 2 hours at constant temperature after reaching the corresponding temperature, so as to balance the temperature of the system.
(3) The upper part of the foaming agent bottle body is held by wearing gloves, the valve is pressed to spray out the foam and start timing, the observation is carried out after standing one meter, and the timing is finished when the foam is completely eliminated.
(4) Each batch of samples was run in 3 replicates at the same temperature and the average was taken as the duration of foam at that temperature.
The composition was prepared based on the above method and the foam duration thereof was examined to investigate the effect of tween 20 on the foam duration, and the examination results are shown in the table below. The result shows that the dosage of the Tween 20 has no obvious influence on whether the foam collapses after being sprayed and the foam duration, but the foam surface is rough when the dosage of the Tween 20 is too much, the foam uniformity is reduced when the dosage of the Tween 20 is too little, the dosage of the Tween 20 is within the range of 0.1-1%, the foam form is good, and the preferred dosage of the Tween 20 is 0.3%.
EXAMPLE 6 Effect of specific defoamer amounts on Elimination time of ethanol-containing foam
First, prescription composition
Second, preparation method
(1) Uniformly mixing 0.4g of silicon dioxide and 10g of dimethyl silicone oil, and heating for 2 hours at 100 ℃ to obtain a special defoaming agent;
(2) weighing sodium dodecyl sulfate, a special defoaming agent and water according to a formula, and heating and stirring at 80 ℃ until the system is uniformly dispersed to obtain a material 1;
(3) weighing Tween 20 and anhydrous ethanol according to a prescription, heating and stirring at 65 ℃ until the Tween 20 and the anhydrous ethanol are completely dissolved, adding the material 1 while stirring to uniformly disperse the material, stopping heating, and continuously stirring to room temperature to obtain an intermediate;
(4) filling the intermediate, sealing, filling propellant, and adding actuator.
Third, foam duration check
(1) The samples to be tested in the formulas 1 to 4 of the embodiment are respectively taken as samples to be tested and vertically placed for 2 hours under the constant temperature condition of 20 ℃, so that the internal temperature is stabilized for detection.
(2) The sample to be tested is respectively placed at 0 ℃, 5 ℃, 20 ℃ and 35 ℃ and kept for 2 hours at constant temperature after reaching the corresponding temperature, so as to balance the temperature of the system.
(3) The upper part of the foaming agent bottle body is held by wearing gloves, the valve is pressed to spray out the foam and start timing, the observation is carried out after standing one meter, and the timing is finished when the foam is completely eliminated.
(4) Each batch of samples was run in 3 replicates at the same temperature and the average was taken as the duration of foam at that temperature.
The composition was prepared based on the above method and its foam duration was measured to investigate the effect of the particular defoamer on the duration of the ethanol-containing foam, and the test results are shown in the table below. The results show that when the amount of the antifoaming agent is 0.01% -0.05%, the foam duration is still reduced with the increase of the amount of the antifoaming agent, and the foam is eliminated more obviously, compared with the foam without ethanol. Under the condition of 0-35 ℃, the foam duration can be accurately controlled at any time node within the range of 360 seconds by adjusting the dosage of the defoaming agent.
Comparative example 1
The above formulation is example 2 in chinese patent CN1244645C, a foaming composition is prepared based on the formulation, and the foam removing effect and the foam duration are evaluated according to the evaluation methods described in examples 1 to 6 of the present invention, and the evaluation results are shown in the following table. As can be seen from the table, there was a pasty residue remaining after the foam was removed at 0 deg.C, no formation was observed at 35 deg.C, and the foam lasted longer at 5 deg.C and 20 deg.C. In contrast, the composition described in inventive example 6 had a shorter foam duration, no cream residue after elimination, and duration and formability were not affected by temperature.
Comparative example 2
The above formula was the one in chinese patent CN102481480A, and a composition was prepared based on the formula, and the foam removing effect and the foam duration thereof were evaluated according to the evaluation methods described in examples 1 to 6 of the present invention. The results show that the composition prepared based on the above formula has poor foam formability and large difference of foam duration time at different temperatures, compared with the composition prepared according to the invention in example 6, which has short foam duration time, good formability and stable foam duration time at different temperatures, and can be accurately controlled.
Comparative example 3
The above formulation was example 3 in chinese patent CN104624118A, and a composition was prepared based on the formulation, and the foam-removing effect and the foam duration thereof were evaluated according to the evaluation methods described in examples 1 to 6 of the present invention. The results show that there is paste residue after the foam is eliminated at 0 ℃ and the foam duration at different temperatures is very different, compared to the composition of the present invention described in example 6, which has no paste residue after the foam is eliminated, has short foam duration, is stable at different temperatures and can be precisely controlled.
Claims (12)
1. A composition for temporary marking comprising a specific defoamer selected from the group consisting of simethicone and silica.
2. The composition for temporary marking of claim 1, further comprising: foaming agent, propellant, ethanol and water.
3. The temporary marking composition of claim 1 or 2, comprising 0.01% to 0.05% of a special defoamer.
4. The composition for temporary marking according to claim 3, wherein the amount of silica in the special antifoaming agent is 2% to 8% of the amount of dimethylsilicone oil.
5. The composition for temporary marking of any one of claims 1 to 4, consisting of 8% to 12% sodium lauryl sulfate, 0.1% to 1% tween 20, 0.01% to 0.05% of a special defoamer, 4% to 10% ethanol, 10% to 30% of a propellant, and 45% to 78% water.
6. The composition for temporary marking according to claim 5, which consists of 10% sodium lauryl sulfate, 0.3% tween 20, 0.03% of a special antifoaming agent, 6% ethanol, 20% propellant and 63.47% water.
7. The composition for temporary marking according to claim 5, consisting of 10% sodium lauryl sulfate, 0.3% tween 20, 0.05% of a special antifoaming agent, 6% ethanol, 20% propellant and 63.65% water.
8. Use of silica together with dimethicone for the preparation of a composition for temporary marking.
9. The use of claim 8, wherein the composition for temporary marking further comprises a foaming agent, a propellant, ethanol and water.
10. The use of claim 9, wherein the amount of silica and dimethicone in the composition for temporary marking is from 0.01% to 0.05% as a special defoamer.
11. A process for preparing a composition for temporary marking according to claims 1 to 7, comprising:
mixing the silicon dioxide with the dimethyl silicone oil;
mixing sodium dodecyl sulfate, the product in the step a) and water, and stirring until the system is uniformly dispersed;
mixing tween 20 and absolute ethyl alcohol, stirring until the tween is completely dissolved, and then adding the obtained liquid into the liquid obtained in the step b);
filling the liquid obtained in c), sealing and filling the propellant.
12. The process of claim 11, wherein the mixing temperature in a) is preferably from 60 ℃ to 150 ℃ for more than 1 hour, more preferably 100 ℃ for 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010629447.0A CN113952763A (en) | 2020-07-03 | 2020-07-03 | Composition for temporary marking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010629447.0A CN113952763A (en) | 2020-07-03 | 2020-07-03 | Composition for temporary marking |
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| CN113952763A true CN113952763A (en) | 2022-01-21 |
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| CN202010629447.0A Pending CN113952763A (en) | 2020-07-03 | 2020-07-03 | Composition for temporary marking |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02180603A (en) * | 1988-12-28 | 1990-07-13 | Shin Etsu Chem Co Ltd | Composition of defoaming agent and manufacture thereof |
| CN104490782A (en) * | 2015-01-20 | 2015-04-08 | 北京康蒂尼药业有限公司 | Temperature control foaming agent for external use, making method thereof and application thereof |
| CN104624118A (en) * | 2015-01-17 | 2015-05-20 | 中山威习日化科技有限公司 | A foam aerosol product with controllable foam duration and preparation method thereof |
| CN106179107A (en) * | 2016-07-13 | 2016-12-07 | 广东三和化工科技有限公司 | One can melt foam indicator and preparation method thereof |
-
2020
- 2020-07-03 CN CN202010629447.0A patent/CN113952763A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02180603A (en) * | 1988-12-28 | 1990-07-13 | Shin Etsu Chem Co Ltd | Composition of defoaming agent and manufacture thereof |
| CN104624118A (en) * | 2015-01-17 | 2015-05-20 | 中山威习日化科技有限公司 | A foam aerosol product with controllable foam duration and preparation method thereof |
| CN104490782A (en) * | 2015-01-20 | 2015-04-08 | 北京康蒂尼药业有限公司 | Temperature control foaming agent for external use, making method thereof and application thereof |
| CN106179107A (en) * | 2016-07-13 | 2016-12-07 | 广东三和化工科技有限公司 | One can melt foam indicator and preparation method thereof |
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Application publication date: 20220121 |