Polyblends
US4405753A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1982 |
| Grant date | Sep 20, 1983 |
| Priority date | — |
| Expiry date | Feb 3, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/905
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyblends are described which comprise (i) 40 to 60% by weight of polyphenylene oxide; (ii) from 10 to 30% by weight an SAN or ABS polymer comprising from 2 to 14% by weight of acrylonitrile; and (iii) from 10 to 30% by weight of a styrene/maleic anhydride copolymer containing from 5 to 18% by weight of maleic anhydride; and in which: (a) the weight proportion of rubber (ungrafted basis) in the polyblend is less than 8%; and (b) the proportions of acrylonitrile and maleic anhydride are selected such that, when plasticized only with 4 parts of triphenyl phosphate for each 100 parts by weight of polyphenylene oxide, the Izod impact strength is at least 50 J/M notch and the distortion temperature under load is at least 110.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.