Quasi-random copolymers from homopolymers
US4417032A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1982 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Apr 22, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L77/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing quasi-random copolymers is described which involves heating a mixture of polyamides in the presence of one or more phosphite promotor(s). The process is conducted at temperatures between about 265.degree. C. and 315.degree. C. with the process time generally ranging from about 2 to about 20 minutes. The process is especially useful for preparing copolymers from a mixture of poly(caproamide) and poly(hexamethylene adipamide). The copolymer products prepared in accordance with the process are particularly suitable for the production of plastic films which have improved properties as compared to either of the homopolymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.