Method and composition for improved melt processability of chlorinated polyvinyl chloride
US4647626A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1985 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Dec 11, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/931
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition of matter comprising a blend of CPVC having a chlorine content of between about 60% and 65% by weight and styrene-acrylonitrile copolymer having an acrylonitrile content of between about 15% and 25% by weight. The composition of matter displays substantially single, homogeneous phase behavior with the CPVC and styrene-acrylonitrile copolymer being substantially or completely miscible. Blending of CPVC and styrene-acrylonitrile copolymer provides a resulting blended polymeric material having enhanced temperature and durability properties. Melt processability of CPVC polymeric material may be enhanced by the inclusion of styrene-acrylonitrile copolymer to form the blends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.