Soil release polymers and laundry detergent compositions containing them
US11739286B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2018 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Apr 9, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a polymer providing soil release properties (also termed a “soil release polymer” or SRP) when incorporated in a laundry detergent composition, the polymer comprising a capped polyoxyalkylene end block connected to a polyester segment; the polyester segment comprising alternating —B1-A-B2— and —R— units; in which B1 and B2 are each independently selected from —OC(O)— and —C(O)O— groups; A is a 2,5-furanylene ring and R is a divalent alkylene radical. The polymer provides good compatibility, stability and cleaning performance when incorporated into a laundry detergent composition, preferably a liquid laundry detergent composition, comprising one or more detersive surfactants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.