Fabric conditioning compositions
View Patent ↗The concentrated liquid fabric softening composition of the present invention comprises an ester-linked triethanolamine (TEA) quaternary ammonium fabric softening material having an Iodine Value of between 0 and 60 and comprising a mixture of at mono-, di- and tri-ester linked components; a single long chain cationic surfactant based on quaternized fatty acid amido-amine surfactants with optional ethoxylate groups and preferably having a methylsulphate counter-ion; and a co-fragmenting agent which is a polyol selected from trihydric and polyhydric polyols. The compositions have a desirable pearly appearance which is stable across a range of storage temperatures.
1. A concentrated liquid fabric softening composition comprising:
(i) from 10% to 40%, by weight of the total composition, of an ester-linked triethanolamine (TEA) quaternary ammonium fabric softening material comprising a mixture of mono-, di- and tri-ester linked components;
(ii) from 0.1% to 20%, by weight of the total composition, of a single long chain cationic surfactant; and
(iii) from 0.1% to 20%, by weight of the total composition, of a co-fragmenting agent;
wherein the TEA quaternary ammonium fabric softening material contains at least 10% mono-ester, by weight of the quaternary material, and has an Iodine Value of between 0 and 60; the single long chain cationic surfactant is a quaternized amido-amine surfactant and preferably has a methylsulphate counter-ion; and the co-fragmenting agent is a sugar or a sugar alcohol.
2. A fabric softening composition according to claim 1 , wherein the single long chain cationic surfactant comprises one or more ethoxylate groups.
3. A fabric softening composition according to claim 1 , wherein the co-fragmenting agent has a molecular weight of less than 500.
4. A fabric softening composition according to claim 1 , wherein the sugar or the sugar alcohol is selected from the group consisting of sucrose, lactose, maltose, glucose, and fructose.
5. A fabric softening composition according to claim 4 wherein the sugar is sucrose.
6. A fabric softening composition according to claim 1 , wherein the ester-linked triethanolamine quaternary ammonium fabric softening material has an iodine value of from 0 to 45.
7. A fabric softening composition according to claim 1 , wherein the ester-linked triethanolamine quaternary ammonium fabric softening material comprises no more than 70% of the di-ester linked component, by weight of the fabric softening compound, and at least 10% of the monoester linked component.
8. A fabric softening composition according to claim 1 , wherein the co-fragmenting agent and water comprise less than 90% by weight of the total formulation.
9. A fabric softening composition according to claim 1 , which further comprises a fatty complexing agent selected from a fatty alcohol and a fatty acid.
10. A method for the treatment of fabrics comprising contacting fabrics with a liquid fabric softening composition according to claim 1 .
11. A method for the manufacture of a concentrated liquid fabric softening composition comprising:
(a) preparing a co-melt of from 10% to 40%, by weight of the total composition, composition, of an ester-linked triethanolamine (TEA) quaternary ammonium fabric softening material comprising a mixture of mono-, di- and tri-ester linked components and from 0.1% to 20%, by weight of the total composition of a single chain cationic surfactant;
(b) adding the melt of (a) into water containing 0.1% to 20%, by weight of the total composition, of a co-fragmenting agent; and
(c) milling the resulting formulation from 0.5 to 3 times the batch volume,
wherein the TEA quaternary ammonium fabric softening material contains at least 10% mono-ester, by weight of the quaternary material, and has an Iodine Value of between 0 and 60, the single long chain cationic surfactant is a quaternized fatty acid amido-amine surfactant and preferably has a methylsulphate counter-ion, and the co-fragmenting agent is a sugar or a sugar alcohol.
12. A method according to claim 11 , which further comprises adding an electrolyte.
13. The method according to claim 11 , wherein the sugar or the sugar alcohol is selected from the group consisting of sucrose, lactose, maltose, glucose, and fructose.
14. The method according to claim 11 , wherein the sugar is sucrose.