Modified polyphenylene ether resins having improved processability and oxidative stability
US5214109A · kind A · utility
7Cited by
8References
9Claims
0Family size
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Key dates
| Filing date | Nov 28, 1990 |
| Grant date | May 25, 1993 |
| Priority date | — |
| Expiry date | Nov 28, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/905
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The processability and resistance to oxidative degradation of polyphenylene ether resins, alone, or in combination with a styrene resin, is improved by including a modifier comprising an alpha, beta-unsaturated carboxylic acid or derivative. In an embodiment, the formation of a composition comprising a poly(2,6-dimethyl-1,4-phenylene ether) and 2 parts per hundred of dibutyl maleate results in a 26 percent improvement in spiral flow, and a 30 percent reduction in oxygen uptake at 115.degree. C. enhancing the utility of polyphenylene ether resins as extrusion and injection molding materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.