Blends of polycarbonate with rubber and monovinylidene aromatic copolymers
US4218544A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 1979 |
| Grant date | Aug 19, 1980 |
| Priority date | — |
| Expiry date | May 3, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L69/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Blends of polycarbonate, such as a polycarbonate of bisphenol-A, with (1) a grafted and nongrafted rubber, such as a diene rubber and a diene rubber grafted with a polar polymer; (2) a monovinylidene aromatic/carboxylic anhydride copolymer, such as styrene/maleic anhydride copolymer, and (3) a compatible polymer, such as styrene/acrylonitrile copolymer, exhibit improved impact strength, melt flow properties and heat resistance. Such blends are particularly useful in the manufacture of molded parts which must be exposed to high temperature during manufacture and use. An example of a particularly desirable blend is a blend of a homopolycarbonate of bisphenol-A with styrene/maleic anhydride copolymer and an ABS resin containing grafted and nongrafted butadiene rubber and styrene/acrylonitrile random copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.