JP-2026075316-A - Liquid laundry detergent composition

Abstract

[Problem] To provide a liquid laundry detergent composition containing an alkanolamine that has excellent cleaning power while suppressing yellowing. [Solution] A liquid laundry detergent composition comprising: component A: polyoxyalkylene type nonionic surfactant; component B: non-soap-based anionic surfactant; component C: one or more selected from the group consisting of copolymers of acrylic acid and maleic acid and salts thereof; and component D: alkanolamine, wherein the content of component A is 15% by mass or more, the content of component D is 0.5% or more and less than 5% by mass, and the A/B ratio, which represents the mass ratio of the content of component A to the content of component B, is 1.0 or more. [Selection Diagram] None

Inventors

• 小池 将人

Assignees

• ライオン株式会社

Dates

Publication Date

20260508

Application Date

20241022

Claims (3)

1. Component A: A polyoxyalkylene-type nonionic surfactant represented by the following general formula (a1), Component B: Non-soap-based anionic surfactant, Component C: One or more selected from the group consisting of copolymers of acrylic acid and maleic acid and salts thereof, and Component D: Alkanolamine, The content of component A is 15% by mass or more, The content of component D is 0.5% or more and less than 5% by mass, A liquid laundry detergent composition in which the A/B ratio, which represents the mass ratio of the content of component A to the content of component B, is 1.0 or greater. R 1 -O-[(EO) s1 /(A 1 O) t1 ]-(EO) u1 -R 2 ...(a1) (In general formula (a1), R1 is a hydrocarbon group having 8 to 22 carbon atoms, R2 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, EO is an oxyethylene group, s1 is a number from 3 to 25 indicating the average repeating number of EO, A1O represents at least one of PO (oxypropylene group) and BO (oxybutylene group), t1 is a number from 0 to 6 indicating the average repeating number of A1O , and u1 is a number from 0 to 20 indicating the average repeating number of EO.)
2. The liquid laundry detergent composition according to claim 1, wherein the mass-average molecular weight of component C is 550 or more and less than 5000.
3. The liquid laundry detergent composition according to claim 1 or 2, wherein the content of component C is 0.5% by mass or more.

Description

This invention relates to a liquid detergent composition for clothing. For example, Patent Document 1 relates to a liquid laundry detergent for commercial use, and describes a method of enhancing cleaning power by making the liquid detergent and its diluted solution alkaline by adding an alkaline agent such as an alkanolamine in addition to a surfactant. Japanese Patent Publication No. 2018-028027 ≪Liquid detergent composition for clothing≫ The liquid laundry detergent composition of this embodiment (hereinafter sometimes simply referred to as the liquid detergent composition) is a composition containing component A, component B, component C, and component D. In this specification, a numerical range represented by "~" means a numerical range whose lower limit and upper limit are the numbers before and after "~". <Component A> Component A is a polyoxyalkylene-type nonionic surfactant represented by the following general formula (a1). Component A contributes to improved cleaning power. R 1 -O-[(EO) s1 /(A 1 O) t1 ]-(EO) u1 -R 2 ...(a1) In general formula (a1), R1 is a hydrocarbon group having 8 to 22 carbon atoms, R2 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, EO is an oxyethylene group, s1 is a number from 3 to 25 indicating the average repeating number of EO, A1O represents at least one of PO (oxypropylene group) and BO (oxybutylene group), t1 is a number from 0 to 6 indicating the average repeating number of A1O , and u1 is a number from 0 to 20 indicating the average repeating number of EO. The hydrocarbon group R1 has 8 to 22 carbon atoms, preferably 10 to 22, more preferably 10 to 20, even more preferably 10 to 18, and particularly preferably 12 to 18. R1 may be linear or branched. R1 may be a linear hydrocarbon group, or a group selected from a branched primary hydrocarbon group and a linear secondary hydrocarbon group. For R2 , a hydrogen atom or an alkyl group having 1 to 3 carbon atoms is preferred, and a hydrogen atom is more preferred. When u1 is 0, s1 is preferably 4 to 20, more preferably 5 to 16, and even more preferably 6 to 10. Also, t1 is preferably 0 to 4, more preferably 0 to 2, and even more preferably 0. When u1 is 1 or greater, s1 is preferably 4 to 16, more preferably 6 to 12, and even more preferably 8 to 10. t1 is preferably 1 to 4, more preferably 2 to 3. u1 is preferably 4 to 16, more preferably 6 to 12, and even more preferably 8 to 10. If t1 is 1 or greater, in [(EO) s1 / (A 1 O) t1 ], there are no particular limitations on the distribution (arrangement order) of EO and PO, EO and BO, or EO, PO and BO; they may be arranged in blocks or randomly. The average number of repeats can be measured by gas chromatography or other methods. <B component> Component B is an anionic surfactant excluding soap (non-soap-based anionic surfactant). Component B contributes to improved cleaning power. Soap is composed of higher fatty acids and their salts. Higher fatty acids are saturated or unsaturated fatty acids with 8 to 24 carbon atoms. Examples of component B include carboxylic acid-type anionic surfactants such as linear alkylbenzene sulfonic acid or its salt (LAS), α-olefin sulfonic acid or its salt (AOS), linear or branched alkyl sulfate ester or its salt (AS), polyoxyalkylene alkyl (alkenyl) ether sulfate ester or its salt (AES), alkyl group-containing alkane sulfonic acid or its salt, α-sulfo fatty acid ester or its salt, internal olefin sulfonic acid or its salt (IOS), hydroxyalkane sulfonic acid or its salt (HAS), alkyl ether carboxylic acid or its salt, polyoxyalkylene ether carboxylic acid or its salt, alkylamide ether carboxylic acid or its salt, alkenylamide ether carboxylic acid or its salt, acylaminocarboxylic acid or its salt; and phosphate ester-type anionic surfactants such as alkyl phosphate ester or its salt, polyoxyalkylene alkyl phosphate ester or its salt, polyoxyalkylene alkylphenyl phosphate ester or its salt, glycerin fatty acid ester monophosphate ester or its salt. Examples of salt forms of component B include alkali metal salts (sodium salts, potassium salts, etc.), alkaline earth metal salts (magnesium salts, etc.), and alkanolamine salts (monoethanolamine salts, diethanolamine salts, etc.). These B components may be used individually or in combination of two or more. <C component> Component C is one or more selected from the group consisting of copolymers of acrylic acid and maleic acid and their salts. Component C contributes to improved cleaning power and suppression of yellowing. The mass-average molecular weight of component C is preferably 550 or more and less than 75,000, and more preferably 550 or more and less than 5,000. When the mass-average molecular weight of component C is 550 or more, the cleaning power is further enhanced, and when it is less than 75,000, the liquid stability is further enhanced. In particular, when it is 550 or more and less than 5,000, the cleaning power is further