CN108542796B

CN108542796B - Amino acid self-thickening system

Info

Publication number: CN108542796B
Application number: CN201810800313.3A
Authority: CN
Inventors: 王宽; 孙吉龙; 李泽勇
Original assignee: Guangzhou Tinci Materials Technology Co Ltd
Current assignee: Guangzhou Tinci Materials Technology Co Ltd
Priority date: 2018-07-20
Filing date: 2018-07-20
Publication date: 2020-06-30
Anticipated expiration: 2038-07-20
Also published as: CN108542796A

Abstract

The invention belongs to the field of daily chemicals, and particularly relates to an amino acid self-thickening system, which contains sodium lauroyl sarcosine, alkyl glycoside and cocamidopropyl amine oxide; wherein the dosage of the sodium lauroyl sarcosinate is 4 to 8 percent; the dosage of the cocamidopropyl amine oxide is 8 to 12 percent; the dosage of the alkyl glycoside is 3 percent; the total dosage of sodium lauroyl sarcosinate and cocamidopropyl amine oxide is 16 percent; the pH value of the system is 5.2-5.8; the solvent is water. The invention aims to provide amino acid self-thickening agent which shows excellent thickening performance when the dosage of sodium lauroyl sarcosinate and cocamidopropylamine oxide reaches 16 percent or more of the weight of a system and the dosage of alkyl glycoside reaches 3 percent or more.

Description

Amino acid self-thickening system

Technical Field

The invention relates to the field of daily chemicals, in particular to an amino acid self-thickening system.

Background

The amino acid surfactant has a self-thickening function, so that in many daily chemical formulas, the amino acid self-thickening agent is increasingly adopted, and has a self-thickening function and mild surface activity.

CN201310127769.5 discloses an amino acid type surfactant self-thickening composition comprising cocamidopropyl hydroxysultaine and sodium lauroyl sarcosinate as thickeners.

CN201310153564.4 discloses an agricultural thickening synergistic additive, which comprises fatty alcohol-polyoxyethylene ether sulfate, alkyl glycoside, sodium lauroyl sarcosinate and sodium dodecyl benzene sulfonate, and the description is as follows: the fatty alcohol-polyoxyethylene ether sulfate is contained, so that the auxiliary agent has the characteristics of better wetting and efficiency enhancement, more stable performance and better thickening and efficiency enhancement effects.

CN201711263120.0 discloses a camellia oil nourishing foam bath cream containing high oil content, which contains hydroxypropyl phosphate starch, C8-C10 alkyl glycoside, cocoyl propyl betaine, potassium cocoyl glycinate, sodium lauryl sulfate, potassium lauryl phosphate, JC 30 epigallocatechin gallate glucoside modified thickener, and the most difficult washing formula of the amino acid system described in the specification is the thickening problem. The amino acid salt anionic surface agent has the characteristics of large head group and difficult formation of rod-shaped micelle which is closely arranged. The micelle factor cannot meet the thickening requirement, and the trend of difficult thickening can be slowed down by compounding other types of surfactants. Another way of thickening is liquid crystal packing. Epigallocatechin gallate glucoside thickeners which have a very pronounced thickening capacity in conjunction with surfactants of potassium amino acid salts and potassium phosphate esters are used as the main thickening means, and only a sufficient amount of potassium amino acid salt is required to achieve a consistency close to that of a paste. Thus, the protocol employs synergistic thickening of potassium amino acid salt, potassium phosphate, epigallocatechin gallate glucoside thickener.

CN201510206608.4 discloses a silicon-free shampoo, which comprises the following components in percentage by weight: 0.5-5% of inulin, 0.2-5% of vegetable oil, 0.2-2% of a solubilizer, 0.2-2% of a thickener, 3-8% of sodium laureth sulfate, 3-8% of cocamidopropyl betaine, 1-5% of alkyl glycoside, 1-5% of sodium cocoyl glycinate, 0.05-0.5% of tetrasodium ethylenediamine tetraacetate, 0.05-0.5% of citric acid, 0.2-1% of a preservative, 0.2-1% of essence and 58-90% of water.

The technical scheme either needs the assistance of an additional thickening agent or has limited thickening capacity under the condition of not adding the additional thickening agent.

Therefore, it is necessary to find an amino acid thickening system with strong thickening capability.

Disclosure of Invention

The invention aims to provide an amino acid self-thickening system which shows excellent thickening performance when the dosage of sodium lauroyl sarcosine and cocamidopropyl amine oxide reaches 16 percent or more of the weight of the system and the dosage of alkyl glycoside reaches 3 percent or more.

The specific scheme of the invention is as follows: an amino acid self-thickening system comprising sodium lauroyl sarcosinate, an alkyl glycoside and cocamidopropyl amine oxide;

wherein the dosage of the sodium lauroyl sarcosinate is 4 to 8 percent; the dosage of the cocamidopropyl amine oxide is 8 to 12 percent; the dosage of the alkyl glycoside is 3 percent; the total dosage of sodium lauroyl sarcosinate and cocamidopropyl amine oxide is 16 percent;

the pH value of the system is 5.2-5.8; the solvent is water.

In the amino acid self-thickening system, the alkyl glycoside is C12-C14 alkyl glycoside, C12-C16 alkyl glycoside or C8-C14 alkyl glycoside.

In the amino acid self-thickening system, the weight percentage of the sodium lauroyl sarcosine, the cocamidopropyl amine oxide and the alkyl glycoside is 8%, 3% or 4%, 12% or 3%.

Compared with the prior art, the invention has the following advantages and effects:

the system of the invention shows excellent thickening performance when the dosage of sodium lauroyl sarcosine and cocamidopropylamine oxide reaches 16 percent or more of the weight of the system and the dosage of alkyl glycoside reaches 3 percent or more.

Drawings

FIG. 1 shows the test results of example 1 of the present invention.

Detailed Description

The invention will now be further described with reference to the following examples, which are not to be construed as limiting the invention in any way, and any limited number of modifications which can be made within the scope of the claims of the invention are still within the scope of the claims of the invention.

Example 1

This example examines the combination properties of sodium Lauroyl Sarcosinate (LS), Cocamidopropyl Amine Oxide (CAO), and alkyl glycoside (APG, alkyl glycoside of C12-14).

Accurately weighing a certain mass of sodium lauroyl sarcosinate, cocamidopropyl amine oxide, alkyl glycoside, deionized water and citric acid, heating in a water bath at 45 ℃, sealing after uniformly stirring, placing in a thermostat at 25 ℃ for standing for 24 hours, taking out, measuring pH (potential of hydrogen) 5.2-5.8 and viscosity, and observing the appearance of the system.

The addition amounts (weight percentage) of sodium lauroyl sarcosine, cocamidopropyl amine oxide and alkyl glycoside are respectively as follows: 4%, 0%; 4%, 1%; 4%, 3%; 6%, 4%, 0%; 6%, 4%, 1%; 6%, 4%, 3%; 4%, 6%, 0%; 4%, 6%, 1%; 4%, 6%, 3%; 4%, 8%, 0%; 4%, 8%, 1%; 4%, 8%, 3%; 6%, 0%; 6%, 1%; 6%, 3%; 8%, 4%, 0%; 8%, 4%, 1%; 8%, 4%, 3%; 12%, 4%, 0%; 12%, 4%, 1%; 12%, 4%, 3%; 8 percent, 8 percent and 0 percent; 8%, 1%; 8 percent, 3 percent; 4%, 12%, 0%; 4%, 12%, 1%; 4%, 12%, 3%;

totaling 27 groups of experimental data;

the performance data is shown in figure 1.

As can be seen from the attached figure 1, when the sum of the usage amounts of the sodium lauroyl sarcosine and the cocamidopropyl amine oxide is less than 16 wt%, the thickening is irregular, and when the sum of the usage amounts of the sodium lauroyl sarcosine and the cocamidopropyl amine oxide is more than or equal to 16 wt% and the usage amount of the alkyl glycoside is more than or equal to 3%, the viscosity mutation occurs.

Compared with the case when the dosage of the alkyl glycoside is 2%, the viscosity is increased by not less than 4 times, and the net increase value is not less than 6000mPa.

Therefore, when the dosage of the sodium lauroyl sarcosine and the cocamidopropylamine oxide reaches 16 percent or more of the weight of the system and the dosage of the alkyl glycoside reaches 3 percent or more, the system shows obvious annual change of the system.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims

1. An amino acid self-thickening system, characterized in that the system comprises sodium lauroyl sarcosinate, an alkyl glycoside and cocamidopropyl amine oxide;

the weight percentage of the sodium lauroyl sarcosine, the cocamidopropyl amine oxide and the alkyl glycoside is 8%, 3% or 4%, 12% or 3%;

the pH value of the system is 5.2-5.8; the solvent is water; the alkyl glycoside is C12-C14 alkyl glycoside, C12-C16 alkyl glycoside or C8-C14 alkyl glycoside.