Polymer mixture comprising a polyphenylene ether and optionally a polystyrene and/or a rubber-modified polystyrene, and articles formed therefrom
US4771096A · kind A · utility
8Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1984 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Mar 29, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/905
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyphenylene ethers may show the property that their molecular weight increases considerably upon extrusion. This increase of the molecular weight leads to less good flow properties. It has been found that the addition of a conjugated, non-aromatic diene compound or of a dienophilic compound suppresses the increase of the molecular weight under extrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.