JPS6284196A - Thickener for detergent - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) Thickeners are usually used in detergents, such as shampoos, conditioners, facial cleansing foams, and kitchen liquid detergents, to improve performance and improve the image of the product. The present invention provides a thickener for detergents that exhibits excellent thickening properties when used in combination with various surfactants commonly used as main components of detergents, increases foaming properties, and improves low-temperature stability. Regarding.

(Prior art and problems to be solved by the invention) Conventionally, thickeners include jetanolamide, water-soluble polymers (methyl cellulose, sodium alginate, carboxymethyl cellulose, etc.), water-soluble inorganic salts such as common salt, and polyethylene glycol distear. rates etc. are used. The N-nitrosogetanolamine contained in getanolamide has been pointed out by the Yoneguchi Food and Drug Administration to be carcinogenic, which may cause problems in use in the cosmetics field, where safety is important.

Since water-soluble polymers lack stability against metal ions, their range of use may be limited in combination with surfactants.

Similarly to water-soluble polymers, inorganic salts may undergo salt exchange when combined with surfactants.

Polyethylene glycol distearate may inhibit foaming properties if added in the amount necessary to achieve the desired viscosity.

Furthermore, food additives such as glycerin laurate and glycerin coconut oil fatty acid ester have been found to have a thickening effect and are preferable from a safety standpoint, but they have problems with low-temperature stability.

[Means and effects to be solved by the invention] The present inventors have developed a cleaning agent that solves the above-mentioned problems, namely: - safety, stability in combination with surfactants, stability during low temperature storage, and foaming properties. As a result of intensive studies aimed at developing thickeners for food use, we found that a specific propylene glycol monofatty acid ester among propylene glycol monofatty acid esters, which are approved as food additives, solved these problems and was found to be an excellent thickener. It was found that it exhibits a viscous effect.

The purity of propylene glycol monofatty acid ester is 90
-100% is good, preferably 95-100%.

When propylene glycol difatty acid ester is contained in an amount of 10% or more, the thickening effect is reduced and foaming properties and low-temperature storage properties are inhibited.

The main component of the fatty acids constituting the product of the present invention is one or more of linear saturated fatty acids having 8 to 14 carbon atoms and/or unsaturated fatty acids having 18 carbon atoms. That is, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, oleic acid, linoleic acid, liluic acid, and mixed acids thereof. If the above fatty acids are the main component, carbon@
There is no problem even if a small amount of linear saturated higher fatty acids of 16 or more is contained, and for example, coconut oil fatty acids, soybean oil fatty acids, and rapeseed oil fatty acids from natural oils and fats may be used.

Further, the thickener of the present invention exhibits excellent thickening properties when used in combination with an anionic, nonionic, or cationic 11-ampholytic surfactant that is a detergent component of a cleaning agent.

It shows remarkable effects especially when used in combination with anionic surfactants.

Examples of anionic surfactants include alkyl sulfate ester salts, polyoxyethylene alkyl sulfate ester salts, alkylbenzene sulfonic acid J! ! class, α−
Examples include olefin sulfonate salts.

The thickener of the present invention may be used not only as an anionic surfactant alone but also in combination with the anionic surfactant.

It may also be used in combination with other nonionic, cationic, or amphoteric surfactants.

The thickener of the present invention may be used in a mixture with other substances added if necessary.

For example, in order to further improve the low temperature storage stability and solubility of the thickener of the present invention in surfactants, the thickener of the present invention may be combined with polyglycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene higher alcohol, etc. In order to further improve the foaming properties and foam quality of the thickener of the present invention, the thickener of the present invention may be mixed with glycerin monolaurate, glycerin monococonut oil fatty acid ester, or glycerin monopalm kernel oil fatty acid ester. A mixture of these may also be used.

When the thickener of the present invention is added to a detergent, the amount added should range from 5 to 40% of the surfactant, depending on the formulation of the detergent, the type of surfactant used, and the desired viscosity. You can achieve your goals.

[Examples and effects of the invention]

Next, Examples and Comparative Examples of the present invention will be shown to specifically explain the present invention.

In this test, we tested the following three commonly used detergent ingredients:
A type of anionic surfactant was used.

1) Sodium lauryl sulfate (hereinafter abbreviated as As-Na) 2) Polyoxyethylene (E, 0. = 3) Sodium lauryl sulfate (hereinafter abbreviated as AES-Na) 3) Polyoxyethylene (E, O, = 3) Lauryl sulfate triethanolamine (hereinafter abbreviated as ES-TEA) Test method ■ Viscosity test Measurement of viscosity change when adding general-purpose thickener, comparative amount, and the present invention using a B-type viscometer at 25°C ■ Foaming Sex test (J l
5-3362) Measuring the foam height at 40'Ck using the Ross Miles method. However, in order to comply with the JIS test conditions, the test was conducted at a low additive amount outside the normal usage range.

■ Low-temperature storage ■ Viscosity test Evaluation of low-temperature storage (presence or absence of crystal precipitation) at 0°C and -5°C using the formulation.

〇-Good -TransparentΔ-Slightly Good-Slightly Transparent ×-Poor 1~Table 1
-3, Tables 2-1 to 2-3 and Tables 3-1 to 3-3 respectively.

Claims (1)

[Claims] (1) 90% propylene glycol monofatty acid ester
Contains ~100% and its constituent fatty acids have 8 to 1 carbon atoms
A thickener for a detergent, characterized by comprising one or more of a linear saturated fatty acid having a carbon number of 4 and/or an unsaturated fatty acid having a carbon number of 18.