Impact modifier compositions for rigid PVC compositions of hydrocarbon rubbers and chlorinated polyethylene
US6849694B2 · kind B2 · utility
18Cited by
29References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 15, 2003 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Jan 15, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is specifically directed to improved polyvinyl chloride compositions having excellent impact strength. In particular, the impact resistant composition comprises a vinyl chloride polymer and 2-8 parts of an impact modifier composition comprising at least one ethylene/alpha-olefin copolymer and at least one chlorinated olefin polymer per 100 parts of the vinyl chloride polymer. Preferably the impact modifier composition comprises less than 1 part of the ethylene/alpha-olefin copolymer and the ratio of said copolymer to the total modifier composition is less than 25%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.