Bromine-bisphenol reacted bisphenol and novolak epoxy resins wit

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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Details

525524, 525527, C08L 6302, C08L 6304, C08L 7104

Patent

active

050736051

ABSTRACT:
Upstaged compositions are prepared by the reaction in the presence of a triarylphosphine catalyst between at least one bisphenol polyglycidyl ether, at least one epoxidized novolak and at least one brominated bisphenol. They may be used for the preparation of resinous blends with polyphenylene ethers, which, in combination with further components, may be used in the preparation of laminates useful as printed circuit boards and having excellent physical and electrical properties.

REFERENCES:
patent: 3352809 (1967-11-01), Carlyle et al.
patent: 3367990 (1968-02-01), Bremmer
patent: 3547881 (1970-12-01), Mueller et al.
patent: 4320222 (1982-03-01), Lopez
patent: 4644023 (1987-02-01), Gray
patent: 4656208 (1987-04-01), Chu et al.
patent: 4895755 (1990-01-01), Berman et al.

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