Fabric softener composition
View Patent ↗The present invention then concerns a fabric softener composition that performs well on softening fabrics, which comprises a blend of amphoteric surfactant carrying a C 12 -C 22 -alkyl or C 12 -C 22 -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.
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.