CN116396763A - Stably foaming coconut oil surfactant and preparation method thereof - Google Patents
Stably foaming coconut oil surfactant and preparation method thereof Download PDFInfo
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- CN116396763A CN116396763A CN202310160202.1A CN202310160202A CN116396763A CN 116396763 A CN116396763 A CN 116396763A CN 202310160202 A CN202310160202 A CN 202310160202A CN 116396763 A CN116396763 A CN 116396763A
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- oil
- coconut oil
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- base catalyst
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- 239000003240 coconut oil Substances 0.000 title claims abstract description 52
- 235000019864 coconut oil Nutrition 0.000 title claims abstract description 52
- 239000004094 surface-active agent Substances 0.000 title claims abstract description 33
- 238000005187 foaming Methods 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000003054 catalyst Substances 0.000 claims abstract description 38
- 235000012343 cottonseed oil Nutrition 0.000 claims abstract description 26
- 239000002385 cottonseed oil Substances 0.000 claims abstract description 26
- 239000007787 solid Substances 0.000 claims abstract description 25
- 239000003921 oil Substances 0.000 claims abstract description 22
- 235000019198 oils Nutrition 0.000 claims abstract description 22
- 235000019482 Palm oil Nutrition 0.000 claims abstract description 17
- 239000002540 palm oil Substances 0.000 claims abstract description 17
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 102000004190 Enzymes Human genes 0.000 claims abstract description 16
- 108090000790 Enzymes Proteins 0.000 claims abstract description 16
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims abstract description 16
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims abstract description 16
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims abstract description 16
- 239000001923 methylcellulose Substances 0.000 claims abstract description 16
- 235000010981 methylcellulose Nutrition 0.000 claims abstract description 16
- 235000019832 sodium triphosphate Nutrition 0.000 claims abstract description 16
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims abstract description 16
- -1 alkanoylamino propyl betaine Chemical compound 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000005809 transesterification reaction Methods 0.000 claims abstract description 7
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims abstract description 6
- 238000009472 formulation Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 12
- POULHZVOKOAJMA-UHFFFAOYSA-M dodecanoate Chemical compound CCCCCCCCCCCC([O-])=O POULHZVOKOAJMA-UHFFFAOYSA-M 0.000 claims description 10
- 229940070765 laurate Drugs 0.000 claims description 10
- 229920000609 methyl cellulose Polymers 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 9
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 8
- 230000035484 reaction time Effects 0.000 claims description 8
- 230000001877 deodorizing effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- QZXSMBBFBXPQHI-UHFFFAOYSA-N N-(dodecanoyl)ethanolamine Chemical class CCCCCCCCCCCC(=O)NCCO QZXSMBBFBXPQHI-UHFFFAOYSA-N 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000003205 fragrance Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 239000003377 acid catalyst Substances 0.000 claims description 3
- 238000004332 deodorization Methods 0.000 claims 1
- 239000002304 perfume Substances 0.000 claims 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract description 4
- 235000021588 free fatty acids Nutrition 0.000 abstract description 3
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- 235000011187 glycerol Nutrition 0.000 abstract description 2
- 238000007670 refining Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 description 2
- 125000001165 hydrophobic group Chemical group 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Chemical group CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000002563 ionic surfactant Substances 0.000 description 1
- HLERILKGMXJNBU-UHFFFAOYSA-N norvaline betaine Chemical compound CCCC(C([O-])=O)[N+](C)(C)C HLERILKGMXJNBU-UHFFFAOYSA-N 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
- C09K23/22—Amides or hydrazides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/02—Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/03—Preparation of carboxylic acid esters by reacting an ester group with a hydroxy group
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fats And Perfumes (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The invention discloses a stable foaming coconut oil surfactant and a preparation method thereof, wherein the formulation comprises coconut oil, palm oil, cottonseed oil, methanol, a solid base catalyst, monoethanolamine, alkanoylamino propyl betaine, essence, tripolyphosphate, enzyme, hydroxyethyl cellulose and methyl cellulose; the palm oil and the cotton seed oil are adopted to replace part of coconut oil, so that the production cost is reduced, the popularization of products is facilitated, the solid base catalyst is adopted for catalysis, the purity of the glycerin phase is improved, and the emission of three wastes is reduced; according to the invention, the content of free fatty acid in the raw oil is reduced in a mode of refining the raw oil, so that the transesterification efficiency is improved.
Description
Technical Field
The invention relates to the technical field of surfactants, in particular to a stable foaming coconut oil surfactant and a preparation method thereof.
Background
The surfactant is a substance which can obviously change the interface state of a solution system by adding a small amount, and the molecular structure of the surfactant has amphipathy: one end is hydrophilic group, and the other end is hydrophobic group; the hydrophilic group is usually a polar group such as carboxylic acid, sulfonic acid, sulfuric acid, amino or amine group and salts thereof, and hydroxyl group, amide group, ether bond and the like can also be used as the polar hydrophilic group; while hydrophobic groups are often nonpolar hydrocarbon chains, such as hydrocarbon chains of more than 8 carbon atoms. The surfactant is divided into an ionic surfactant, a nonionic surfactant, an amphoteric surfactant, a compound surfactant, other surfactants and the like, wherein the coconut oil surfactant is a nonionic surfactant, the commonly used coconut oil surfactant is coconut diethanolamide and coconut monoethanolamide, the diethanolamide has strict production and use specifications due to certain carcinogenic risk, and the monoethanolamide is easy to be turbid when the dosage is large, so that the product has poor appearance and is not easy to be received by consumers; the price of the existing coconut oil surfactant serving as a main raw material is continuously increased, so that the production cost is increased, and the popularization of products is not facilitated; in the conventional method for producing a coconut oil surfactant, since a certain amount of free fatty acid is present in the raw oil, the efficiency is lowered when transesterification is performed.
Disclosure of Invention
Aiming at the problems, the invention provides the stable foaming coconut oil surfactant and the preparation method thereof, which have simple operation and high recovery rate of the surfactant.
In order to achieve the above purpose, the present invention solves the problems by the following technical scheme:
a stable foaming coconut oil surfactant, the formulation comprising: coconut oil, palm oil, cottonseed oil, methanol, a solid base catalyst, monoethanolamine, alkanoylamino propyl betaine, essence, tripolyphosphate, enzyme, hydroxyethyl cellulose and methyl cellulose, wherein the mass percentages of the components are as follows: 32-42% of coconut oil, 7-10% of palm oil, 1-4% of cottonseed oil, 10-16% of methanol, 0.5-0.8% of solid base catalyst, 21-30% of monoethanolamine, 3-5% of alkanoylamino propyl betaine, 0.2-1.6% of essence, 0.1-0.4% of tripolyphosphate, 2.0-3.2% of enzyme, 3.1-3.5% of hydroxyethyl cellulose and 2.3-3.0% of methyl cellulose.
The mass percentages of the components are as follows: 40% coconut oil, 8% palm oil, 1% cottonseed oil, 14% methanol, 0.6% solid base catalyst, 25% monoethanolamine, 3% alkanoylamino propyl betaine, 0.4% fragrance, 0.1% tripolyphosphate, 2.2% enzyme, 3.2% hydroxyethyl cellulose and 2.5% methyl cellulose.
A process for preparing a stable foaming coconut oil surfactant comprising the steps of:
s1 comprises the following components in percentage by mass: 40% of coconut oil, 8% of palm oil, 1% of cotton seed oil, 14% of methanol, 0.6% of solid base catalyst, 25% of monoethanolamine, 3% of alkanoylamino propyl betaine, 0.4% of essence, 0.1% of tripolyphosphate, 2.2% of enzyme, 3.2% of hydroxyethyl cellulose and 2.5% of methyl cellulose, and weighing according to the mass percentage sum of 1;
s2, washing the prepared coconut oil, palm and oil cotton seed oil, drying, decoloring, filtering, deacidifying, deodorizing, condensing and mixing to obtain refined mixed oil;
s3, adding the refined mixed oil and methanol into a reaction kettle, and adding a solid base catalyst to perform transesterification reaction to obtain laurate;
and S4, adding laurate and the rest materials into a reaction kettle, and fully stirring to obtain the modified coconut monoethanolamide after the laurate and the rest materials are reacted completely.
Specifically, the solid base catalyst used in the step S1 is an industrial base catalyst, and may be replaced by a liquid base catalyst, a common base catalyst or an acidic catalyst.
Specifically, in the step S2, coconut oil, palm and oil cottonseed oil are sent into a reaction kettle to be heated, the heating temperature is 65-75 ℃, the time is 0.5-1h, and then hot water is introduced to wash for 0.5-1h.
Specifically, in the step S2, a drying and decoloring tank is adopted in the drying and decoloring process, the temperature in the tank is controlled to be 100-110 ℃, and the time is controlled to be 3-4 hours.
Specifically, in the step S2, steam is introduced into a reaction kettle, the temperature in the kettle is controlled to be 280-300 ℃, and the time is controlled to be 2-3 hours.
Specifically, in the step S2, a condensing tank is adopted in the condensing treatment process, the temperature in the tank is controlled to be 20-25 ℃, and the time is controlled to be 0.5-1h.
Specifically, the temperature of the reaction kettle in the step S3 is controlled to be 60-63 ℃, so that the system is kept in a micro-boiling state conveniently, and the reaction time is controlled to be 0.1-0.2h.
Specifically, the temperature of the reaction kettle in the step S4 is controlled to be 150-170 ℃, and the reaction time is controlled to be 1-2h.
The beneficial effects of the invention are as follows:
compared with the existing coconut oil surfactant, the invention improves the foaming stability of the product and reduces the cloud point of the product by adding monoethanolamine, alkanolamide propyl betaine, essence, tripolyphosphate, enzyme, hydroxyethyl cellulose and methyl cellulose; the palm oil and the cotton seed oil are adopted to replace part of coconut oil, so that the production cost is reduced, the popularization of products is facilitated, the solid base catalyst is adopted for catalysis, the purity of the glycerin phase is improved, and the emission of three wastes is reduced; according to the invention, the content of free fatty acid in the raw oil is reduced in a mode of refining the raw oil, so that the transesterification efficiency is improved.
Detailed Description
The invention will be described in further detail with reference to the following embodiments in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
Example 1
A stable foaming coconut oil surfactant, the formulation comprising: coconut oil, palm oil, cottonseed oil, methanol, a solid base catalyst, monoethanolamine, alkanoylamino propyl betaine, essence, tripolyphosphate, enzyme, hydroxyethyl cellulose and methyl cellulose, wherein the mass percentages of the components are as follows: 40% coconut oil, 8% palm oil, 1% cottonseed oil, 14% methanol, 0.6% solid base catalyst, 25% monoethanolamine, 3% alkanoylamino propyl betaine, 0.4% fragrance, 0.1% tripolyphosphate, 2.2% enzyme, 3.2% hydroxyethyl cellulose and 2.5% methyl cellulose.
A process for preparing a stable foaming coconut oil surfactant comprising the steps of:
s1 comprises the following components in percentage by mass: 40% of coconut oil, 8% of palm oil, 1% of cotton seed oil, 14% of methanol, 0.6% of a solid base catalyst, 25% of monoethanolamine, 3% of alkanoylamino propyl betaine, 0.4% of essence, 0.1% of tripolyphosphate, 2.2% of enzyme, 3.2% of hydroxyethyl cellulose and 2.5% of methyl cellulose, and weighing according to the mass percentage sum of 1, wherein the solid base catalyst is an industrial base catalyst, and can be replaced by a liquid base catalyst, a common base catalyst or an acid catalyst;
s2, washing prepared coconut oil, palm and oil cotton seed oil, drying, decoloring, filtering, deacidifying and deodorizing, condensing and mixing to obtain refined mixed oil, wherein the washing process is to send the coconut oil, the palm and the oil cotton seed oil into a reaction kettle for heating at 70 ℃ for 0.5h, then introducing hot water for washing for 0.5h, the drying and decoloring process adopts a drying and decoloring tank, the temperature in the tank is controlled to 100 ℃, the time is controlled to 3h, the deacidifying and deodorizing process adopts a condensing tank, the temperature in the kettle is controlled to 300 ℃, the time is controlled to 2h, and the temperature in the tank is controlled to 20 ℃ and the time is controlled to 1h;
s3, adding the refined mixed oil and methanol into a reaction kettle, adding a solid base catalyst to perform transesterification reaction to obtain laurate, controlling the temperature of the reaction kettle to 63 ℃, and controlling the reaction time to 0.1h under the condition that the system is kept in a micro-boiling state conveniently;
s4, adding laurate and the rest materials into a reaction kettle, fully stirring, and obtaining the modified coconut monoethanolamide after the reaction is completed, wherein the temperature of the reaction kettle is controlled to 163 ℃, and the reaction time is controlled to be 1h.
Example 2
A stable foaming coconut oil surfactant, the formulation comprising: coconut oil, palm oil, cottonseed oil, methanol, a solid base catalyst, monoethanolamine, alkanoylamino propyl betaine, essence, tripolyphosphate, enzyme, hydroxyethyl cellulose and methyl cellulose, wherein the mass percentages of the components are as follows: 37% coconut oil, 9% palm oil, 3% cottonseed oil, 12% methanol, 0.5% solid base catalyst, 23% monoethanolamine, 5% alkanoylamino propyl betaine, 1.2% fragrance, 0.3% tripolyphosphate, 2.8% enzyme, 3.4% hydroxyethyl cellulose and 2.8% methyl cellulose.
A process for preparing a stable foaming coconut oil surfactant comprising the steps of:
s1 comprises the following components in percentage by mass: 37% of coconut oil, 9% of palm oil, 3% of cotton seed oil, 12% of methanol, 0.5% of a solid base catalyst, 23% of monoethanolamine, 5% of alkanoylamino propyl betaine, 1.2% of essence, 0.3% of tripolyphosphate, 2.8% of enzyme, 3.4% of hydroxyethyl cellulose and 2.8% of methyl cellulose, and weighing according to the mass percentage sum of 1, wherein the solid base catalyst is an industrial base catalyst, and can be replaced by a liquid base catalyst, a common base catalyst or an acid catalyst;
s2, washing prepared coconut oil, palm and oil cotton seed oil, drying, decoloring, filtering, deacidifying and deodorizing, condensing and mixing to obtain refined mixed oil, wherein the washing process is to send the coconut oil, the palm and the oil cotton seed oil into a reaction kettle for heating at the temperature of 72 ℃ for 0.5h, then introducing hot water for washing for 0.5h, the drying and decoloring process adopts a drying and decoloring tank, the temperature in the tank is controlled to 105 ℃, the time is controlled to 3h, the deacidifying and deodorizing process adopts a condensing tank, the temperature in the tank is controlled to 300 ℃, the time is controlled to 2h, and the temperature in the tank is controlled to 25 ℃ for 1h;
s3, adding the refined mixed oil and methanol into a reaction kettle, adding a solid base catalyst to perform transesterification reaction to obtain laurate, controlling the temperature of the reaction kettle to 60 ℃, and controlling the reaction time to 0.1h under the condition that the system is kept in a micro-boiling state conveniently;
s4, adding laurate and the rest materials into a reaction kettle, fully stirring, and obtaining the modified coconut monoethanolamide after the reaction is completed, wherein the temperature of the reaction kettle is controlled to 160 ℃, and the reaction time is controlled to 1h.
Claims (10)
1. A stable foaming coconut oil surfactant, the formulation comprising: coconut oil, palm oil, cottonseed oil, methanol, solid base catalyst, monoethanolamine, alkanoylamino propyl betaine, perfume, tripolyphosphate, enzyme, hydroxyethyl cellulose and methyl cellulose, characterized in that: the mass percentages of the components are as follows: 32-42% of coconut oil, 7-10% of palm oil, 1-4% of cottonseed oil, 10-16% of methanol, 0.5-0.8% of solid base catalyst, 21-30% of monoethanolamine, 3-5% of alkanoylamino propyl betaine, 0.2-1.6% of essence, 0.1-0.4% of tripolyphosphate, 2.0-3.2% of enzyme, 3.1-3.5% of hydroxyethyl cellulose and 2.3-3.0% of methyl cellulose.
2. The stable foaming coconut oil surfactant of claim 1, wherein: the mass percentages of the components are as follows: 40% coconut oil, 8% palm oil, 1% cottonseed oil, 14% methanol, 0.6% solid base catalyst, 25% monoethanolamine, 3% alkanoylamino propyl betaine, 0.4% fragrance, 0.1% tripolyphosphate, 2.2% enzyme, 3.2% hydroxyethyl cellulose and 2.5% methyl cellulose.
3. A process for preparing a stable foaming coconut oil surfactant comprising the steps of:
s1 comprises the following components in percentage by mass: 40% of coconut oil, 8% of palm oil, 1% of cotton seed oil, 14% of methanol, 0.6% of solid base catalyst, 25% of monoethanolamine, 3% of alkanoylamino propyl betaine, 0.4% of essence, 0.1% of tripolyphosphate, 2.2% of enzyme, 3.2% of hydroxyethyl cellulose and 2.5% of methyl cellulose, and weighing according to the mass percentage sum of 1;
s2, washing the prepared coconut oil, palm and oil cotton seed oil, drying, decoloring, filtering, deacidifying, deodorizing, condensing and mixing to obtain refined mixed oil;
s3, adding the refined mixed oil and methanol into a reaction kettle, and adding a solid base catalyst to perform transesterification reaction to obtain laurate;
and S4, adding laurate and the rest materials into a reaction kettle, and fully stirring to obtain the modified coconut monoethanolamide after the laurate and the rest materials are reacted completely.
4. The method for preparing a stable foaming coconut oil surfactant of claim 3, wherein the solid base catalyst used in the step S1 is an industrial base catalyst, and can be replaced by a liquid base catalyst, a general base catalyst or an acid catalyst.
5. The method for preparing the stable foaming coconut oil surfactant according to claim 3, wherein the washing process in the step S2 is to heat coconut oil, palm and oil cotton seed oil in a reaction kettle at 65-75 ℃ for 0.5-1h, and then to wash the coconut oil, palm and oil cotton seed oil in hot water for 0.5-1h.
6. The method for preparing stable foaming coconut oil surfactant as recited in claim 3, wherein the drying and decoloring process in the step S2 is performed by using a drying and decoloring tank, wherein the temperature in the tank is controlled to be 100-110 ℃ and the time is controlled to be 3-4h.
7. The method for preparing stable foaming coconut oil surfactant according to claim 3, wherein the deacidification and deodorization process in the step S2 is to introduce steam into a reaction kettle, wherein the temperature in the kettle is controlled to be 280-300 ℃ and the time is controlled to be 2-3h.
8. A method for preparing a stable foaming coconut oil surfactant according to claim 3, wherein the condensing treatment in the step S2 is performed by using a condensing tank, the temperature in the tank is controlled to be 20-25 ℃, and the time is controlled to be 0.5-1h.
9. The method for preparing stable foaming coconut oil surfactant according to claim 3, wherein the temperature of the reaction kettle in the step S3 is controlled to be 60-63 ℃, so that the system is kept in a micro-boiling state, and the reaction time is controlled to be 0.1-0.2h.
10. The method for preparing the stable foaming coconut oil surfactant of claim 3, wherein the temperature of the reaction kettle in the step S4 is controlled to be 150-170 ℃ and the reaction time is controlled to be 1-2h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310160202.1A CN116396763A (en) | 2023-02-24 | 2023-02-24 | Stably foaming coconut oil surfactant and preparation method thereof |
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| CN202310160202.1A CN116396763A (en) | 2023-02-24 | 2023-02-24 | Stably foaming coconut oil surfactant and preparation method thereof |
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