Sulfonated estolides and other derivatives of fatty acids, methods of making them, and compositions and processes employing them
US7666828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2009 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Jan 14, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3788
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Sulfo-estolides and methods of making them are described. Useful methods include acid side bleaching, partial hydrogenation of the fatty acid, pretreatment of the fatty acid to provide color inhibition, acid side hydrolysis of the sulfo-estolides, or conversion of SHP to an essentially fully hydrolyzed product (HSHP) or a partially hydrolyzed product (PHSHP). Detergent formulations, such as laundry detergents, softeners, and other materials, containing any of these materials are disclosed. Laundry methods employing these formulations are also disclosed. These formulations are useful as laundry detergents and can be biodegradable, heavy duty liquids, 2× or 3× and up to 6× concentrates, low foaming, and/or effective in a high efficiency washing machine. Methods for laundering fabrics with the compositions are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.