Method of preparing fabric conditioning compositions
US7078374B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2001 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Apr 28, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D1/72
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of preparing an aqueous dispersion of a fabric conditioning composition comprises mixing 7.5 to 60% by weight of a cationic fabric softening compound, the compound having one or more hydrocarbyl chains formed from parent fatty acyl compounds or fatty acids having an iodine value of from 0 to 20 with 0.01%–1.5% by weight of a nonionic surfactant viscosity modifier and up to 1.4% by weight of a fatty alcohol, the combination of (b) and (c) being no more than 1.5% by weight, based on the total weight of the composition, the aqueous dispersion being subjected to high-shear below the phase transition temperature of compound (a) for a time sufficient to provide a composition having a viscosity of from 10 to 250 mPa·s measured at 20 s−1 using a Haake NV1 Rotoviscometer at 20° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.