Fabric softener composition

Patent metadata

Field	Value
Publication number	US-10174273-B2
Application number	US-201415037893-A
Country	US
Kind code	B2
Filing date	Nov 20, 2014
Priority date	Nov 20, 2013
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

The present invention then concerns a fabric softener composition that performs well on softening fabrics, which comprises a blend of amphoteric surfactant carrying a C12-C22-alkyl or C12-C22-alkenyl, a fatty acid or a fatty alcohol, and a polysaccharide or polysaccharide derivative. The invention also concerns the use of said softening composition to impart fabric softness to fabrics.

First claim

The invention claimed is:

1. A method for softening a fabric comprising the step of contacting an aqueous medium comprising a softening composition with a fabric during a rinse cycle of a fabric washing machine, the softening composition comprising at least:
a) 1-10% wt of a betaine having the structure:
R 1 R 2 R 3 N + (CH 2 ) y C(O)O −   (I)

wherein R 1 is methyl, R 2 is a C 16 -alkyl, R 3 is methyl, and y is 2;
b) 0.1-5% wt of an alcohol compound carrying a C 14 -alkyl; the weight ratio of compound a) to compound b) is comprised between 1:2 and 20:1;
c) 0.01-2% wt of hydroxypropyl guar hydroxypropyltrimonium chloride; the weight ratio of compound a) to compound c) is comprised between 3:1 and 30:1; and
d) water;
wherein the percent by weight is expressed in relation with the total weight of the softening composition.

2. The method according to claim 1 , wherein the softening composition is substantially free or completely free of anionic agent.

3. The method according to claim 1 , wherein the softening composition comprises less than 1 wt % of quaternary ammonium salt.

4. The method according to claim 1 , wherein the softening composition comprises less than 0.01 wt % of the quaternary ammonium salt.

5. A method for softening a fabric comprising the step of contacting an aqueous medium comprising a softening system with a fabric during a rinse cycle of a fabric washing machine, the softening system consisting of:
a) a betaine having the structure:
R 1 R 2 R 3 N + (CH 2 ) y C(O)O −   (I)

wherein R 1 is methyl, R 2 is a C 16 -alkyl, R 3 is methyl, and y is 2;
b) an alcohol compound carrying a C 14 -alkyl; the weight ratio of compound a) to compound b) is comprised between 1:2 and 20:1; and
c) hydroxypropyl guar hydroxypropyltrimonium chloride; the weight ratio of compound a) to compound c) is comprised between 3:1 and 30:1.

Assignees

• Rhodia Operations

Inventors

• Zhang Hai Zhou
• He Lin
• Zhan William

Classifications

• C11D3/2013

  fatty or with at least 8 carbon atoms in the alkyl chain · CPC title

• C11D3/0015

  liquid · CPC title

• C11D3/202

  fatty or with at least 8 carbon atoms in the alkyl chain · CPC title

• C11D1/75 Primary

  Amino oxides · CPC title

• C11D3/222

  Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin · CPC title