Process of preparing a polymer mixture comprising polyvinyl chloride, a polycarbonate and a rubber like polymer
US4504623A · kind A · utility
4Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1983 |
| Grant date | Mar 12, 1985 |
| Priority date | — |
| Expiry date | Dec 9, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of preparing a polymer mixture comprising polyvinyl chloride, an aromatic polycarbonate and a rubber like polymeric, characterized in that first a premixture comprising 60-90% by weight of aromatic polycarbonate and 10-40% by weight of rubber like polymer is prepared by mixing at a temperature above about 220.degree. C., after which the resulting premixture is cooled to a temperature below about 220.degree. C. and is mixed with the polyvinyl chloride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.