Polymer mixture comprising a polyphenylene ether and optionally a polystyrene and/or a rubber-modified polystyrene, and articles formed therefrom
US5288812A · kind A · utility
1Cited by
7References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 31, 1990 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Oct 31, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/01
- 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.