Polymers comprising alkali-insoluble core/alkali-soluble shell and copositions thereof
US4916171A · kind A · utility
66Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1987 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Sep 1, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein are core-shell polymers having an alkali-insoluble, emulsion polymer core and an alkali-soluble, emulsion polymer shell attached or associated with said core so that upon dissolving said shell with alkali, a portion of said shell remains attached or associated with said core. Also disclosed are compositions wherein said shell polymer has been neutralized and substantially, but not totally, dissolved so as to form a blend of neutralized core-shell polymer and an aqueous solution of neutralized shell polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.