Ortho ester-capped polyphenylene ethers and copolymers prepared therefrom
US5162448A · kind A · utility
5Cited by
1References
13Claims
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Key dates
| Filing date | Dec 19, 1991 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Dec 19, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Ortho ester-capped polyphenylene ethers are prepared by the reaction of a polyphenylene ether with a reactive compound containing an ortho ester group, preferably a 4-(2-methoxy-2-methyl-1,3-dioxolane-4-yl)methyl group. Chlorotriazines containing the ortho ester substituent are particularly preferred as capping agents. The capped polyphenylene ethers form copolymer-containing compositions with polyesters and other polymers containing carboxylic acid groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.