Process for preparing graft and block copolymers
US4417031A · kind A · utility
21Cited by
15References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1982 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Jan 7, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G81/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing block, and/or graft copolymeric compositions by forming an intimate mixture of two or more polymers, at least one of which includes one or more amino junctions and at least one of the remaining polymers includes one or more carboxylic acid junctions and an effective amount of a phosphite compound, and thereafter heating the intimate mixture at a temperature and for a time sufficient to form the desired block, and/or graft copolymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.