Water-soluble or water-dispersible grafted copolymers
US6239227A · kind A · utility
1Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1999 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Jul 9, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/919
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel water-soluble or water-dispersible grafted copolymers comprising polyvinyl alcohol, vinylpyrrolidone or oxyalkylene oligomer or polymer units and hydrophilic copolymer units derived from ethylenically unsaturated anionic and amphoteric water-soluble monomers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.