CN110897932B

CN110897932B - Thickener composition, and preparation method and application thereof

Info

Publication number: CN110897932B
Application number: CN201911337887.2A
Authority: CN
Inventors: 郭静波; 徐由江; 朱红军; 崔宜斌; 陈叶礼; 朱志乾; 臧涛涛
Original assignee: Zhangjiagang Great Chemicals Co ltd
Current assignee: Zhangjiagang Great Chemicals Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2022-03-22
Anticipated expiration: 2039-12-23
Also published as: CN110897932A

Abstract

The invention discloses a thickener composition, a preparation method and application thereof, wherein the thickener composition comprises the following components in parts by weight: deionized water: 40-65% of aliphatic amine polyether: 20-40% of sorbitan caprylate: 3-10%, disodium lauriminodiacetate: 3-10%. The fatty amine polyether and the disodium lauryl iminodiacetate have the characteristic of cation, are easy to form an anion-cation co-micelle structure with an acyl amino acid surfactant (anion type). Meanwhile, a polyether chain segment on the aliphatic amine polyether and two carboxyl groups on the disodium lauryl iminodiacetate have strong intermolecular hydrogen bond tendency, so that a three-dimensional structure is formed, and in addition, the sorbitan caprylate is added, the polyhydroxy structure has strong capability of combining with water to form a hydrogen bond, and a multi-dimensional structure taking water molecules as a carrier is formed in the whole system, so that the viscosity is increased.

Description

Thickener composition, and preparation method and application thereof

Technical Field

The invention relates to a thickener composition, in particular to a thickener composition for thickening an amino acid surfactant, and belongs to the technical field of cosmetic application.

Background

Amino acid surfactant is a mild and degradable anionic surfactant, has good washing, sterilizing, foaming, hard water resisting and low irritation performances, and has received more and more attention. However, the inability of amino acid surfactant to be thickened by simple methods during application to obtain a product with a suitable viscosity has been one of the biggest problems in the widespread use of amino acid surfactants.

CN 201310128258.5 discloses an amino acid type surfactant self-thickening composition, which contains cocamidopropyl betaine and sodium lauroyl sarcosinate as thickeners, but the applicable formula range is small in the practical application process, and the self-thickening effect of cocamidopropyl betaine and other amino acids is not ideal, so that the wide application cannot be achieved. CN 201510190450.6 forms lauroyl glutamic acid triethanol ammonium salt and cocoyl glutamic acid triethanol ammonium salt by reacting lauroyl glutamic acid and cocoyl glutamic acid with triethanolamine, the two salts with different molecular weights have certain thickening effect and can be adjusted to be transparent in a range from liquid to solid at will, and the method is only suitable for acyl glutamic acid and is not suitable for thickening other acyl amino acid.

In the application of personal cleaning products, the stability of the self-thickening system is not high by the amino acid type/amphoteric surfactant complex thickening and the way of forming the self-thickening system is greatly influenced by relevant factors such as pH, sodium chloride, temperature and the like, and the self-thickening system can only take effect on individual amino acid type surfactant; similarly, the mode of thickening acylglutamate by triethanolamine salts cannot be widely applied to other amino acid type surface activities, and the rheological property is poor. Therefore, it is very important to research a thickener which can be widely applied to amino acid type surface activity and is low in price.

Disclosure of Invention

In order to solve the problems, the invention provides a thickening agent for thickening an amino acid surfactant, in particular to a thickening agent which can be widely applied to amino acid type surfactant and is low in cost. The thickening agent is characterized in that a co-micelle three-dimensional structure is formed through the direct synergistic effect of different surfactants, so that the thickening of the amino acid surfactant is realized, and the thickening agent is specifically prepared by taking fatty amine polyether as a main component and compounding sorbitan caprylate and disodium lauriminodiacetate.

In order to solve the technical problems, the invention adopts the following technical scheme:

a thickener composition comprising the following components:

deionized water: 40 to 65 percent

Fatty amine polyether: 20 to 40 percent

Sorbitan octanoate: 3 to 10 percent

Disodium lauriminodiacetate: 3 to 10 percent

Further, the fatty amine polyether is laurylamine polyether, cocoamine polyether, tallow amine polyether, or stearyl amine polyether; the polyether can be polyoxyethylene ether, polyoxypropylene ether, and polyoxyethylene polyoxypropylene ether.

Further, the number of EO polymers in the polyether is preferably 3 to 12, and the number of PO polymers is preferably 1 to 5.

The preparation method of the thickener composition comprises the following steps: adding a certain amount of deionized water into a reaction vessel, heating to 55-60 ℃, sequentially adding fatty amine polyether, sorbitan caprylate and disodium laurimidodiacetate, continuously heating to 80-90 ℃, stirring and mixing until the system presents uniform transparent slurry, and cooling to obtain a finished product.

The thickener composition is used for the acyl thickening amino acid surfactant, and the thickened acyl thickening amino acid surfactant is widely applied to a transparent silicone-oil-free shampoo system.

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

according to the research of the structural characteristics and thickening action mechanism of the surfactant, a proper raw material is preferably selected, the fatty amine polyether and the lauryl iminodiacetic acid disodium have the cationic characteristics, the acylamino acid is an anionic surfactant, and the anionic surfactant are easy to form an anionic-cationic co-micelle structure. In this way, a nitrogen atom on the disodium lauryl iminodiacetate presents cation and anion attraction combination of acylamino acid, meanwhile, a polyether chain segment on the fatty amine polyether and two carboxyl groups on the disodium lauryl iminodiacetate have strong intermolecular hydrogen bonding tendency, a three-dimensional structure is formed, and in addition, the sorbitan caprylate is added, the polyhydroxy structure has strong capability of combining with water to form hydrogen bonding, and a multi-dimensional three-dimensional structure taking water molecules as a carrier is formed in the whole system, so that the viscosity is increased.

Detailed Description

The present invention will be further described with reference to the following examples. It is to be understood that the following examples are illustrative only and are not intended to limit the scope of the invention, which is to be given numerous insubstantial modifications and adaptations by those skilled in the art based on the teachings set forth above.

Example 1

A thickener composition comprising the following components:

example 2

A thickener composition comprising the following components:

example 3

A thickener composition comprising the following components:

examples 1-3 thickener compositions were prepared by: adding a certain amount of deionized water into a reaction vessel, heating to 55-60 ℃, sequentially adding fatty amine polyether, sorbitan caprylate and disodium laurimidodiacetate, continuously heating to 80-90 ℃, stirring and mixing until the system presents uniform transparent slurry, and cooling to obtain a finished product.

Thickening performance evaluation method:

the formula is as follows:

name (R)	Content (wt.)
		Thickened compositions/controls	0.5～10％
Amino acid surfactants	20％
		Cocoamidopropyl betaine	10％
Polyquaternium-10	0.4％
		Deionized water	Balance of

Comparison 1: a commercially available CMEA;

comparison 2: commercially available 6501;

comparison 3: commercially available CMMEA;

thickening composition: the products prepared in the embodiments 1-3 of the invention;

amino acid surfactant: sodium cocoyl methyl taurate, sodium cocoyl glycinate and sodium cocoyl glutamate.

The process comprises the following steps:

adding deionized water into a container, slowly heating to 75-80 ℃, adding polyquaternium-10 under stirring, keeping the temperature, stirring and dissolving to be complete, sequentially adding the rest components, stirring and cooling to 50-55 ℃, adjusting the pH value of the system to 6.0-6.5, cooling to below 40 ℃, stopping stirring, placing in a 25 ℃ water bath, keeping the temperature for 12 hours, and carrying out related viscosity performance test.

The test results are shown in the following table

Note: in the formula, the content of the cocamidopropyl betaine is 10 percent, and the content of the polyquaternium-10 is 0.4 percent.

The result shows that the thickener composition prepared by the invention has excellent thickening effect on the amino acid surfactant.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The thickener composition is characterized by comprising the following components in parts by weight:

deionized water: 40-65% of aliphatic amine polyether: 20-40% of sorbitan caprylate: 3 to 10 percent,

Disodium lauriminodiacetate: 3-10%;

the adopted fatty amine polyether is laurylamine, cocoamine, tallow amine or stearyl amine; the polyether is polyoxyethylene ether, polyoxypropylene ether or polyoxyethylene polyoxypropylene ether.

2. Thickener composition according to claim 1, characterized in that: the polyether has EO polymerization number of 3-12 and PO polymerization number of 1-5.

3. Process for the preparation of a thickener composition according to claim 1 or 2, characterized by the following steps: adding a certain amount of deionized water into a reaction vessel, heating to 55-60 ℃, sequentially adding fatty amine polyether, sorbitan caprylate and disodium laurimidodiacetate, continuously heating to 80-90 ℃, stirring and mixing until the system presents uniform transparent slurry, and cooling to obtain a finished product.

4. Use of a thickener composition according to claim 1 or 2, characterized in that: the thickener composition is used to thicken amino acid surfactants.