Polymers for laundry applications
US6554869B2 · kind B2 · utility
7Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2001 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Apr 19, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3769
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A polymer for use in a composition or method of laundry treatment is a copolymer of:(a) one or more anionic monomer units;(b) one or more cationic monomer units; and(c) optionally, one or more uncharged monomer units;wherein, the number ratio of the total of all negative charges on the anionic monomer unit(s) to the total of all positive charges on the cationic monomer unit(s) is from 10:1 to 3:1, especially from 17:3 to 3:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.