Polymer compositions useful as dye complexing agents, and processes for preparing same
US6391995B1 · kind B1 · utility
12Cited by
7References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2001 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Feb 9, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3776
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Described are preferred processes for preparing quaternary amine polymers of good color, comprising preparing a free base amine polymer by polymerizing a free base amine monomer in the presence of a water-soluble azo initiator, and subjecting the resultant polymer to quaternization conditions. Also described are unique, water-soluble quaternary amine polymers obtainable by such processes, and dye complexing polymer blends useful in the manufacture of detergents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.