Process for the preparation of poly(vinylphenol) from poly(aceto

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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5253289, 525346, 525355, C08F 812

Patent

active

048989169

ABSTRACT:
Polymers of 4-vinylphenol are made by the acid catalyzed transesterification of polymers of 4-acetoxystyrene in an alcohol. The 4-vinylphenol polymers are useful as epoxy resins curing agents and as the phenolic base for epoxy resin per se.

REFERENCES:
patent: 3970534 (1976-07-01), Fujiwara et al.
patent: 4129617 (1978-12-01), Machi et al.
patent: 4678843 (1987-07-01), Elmore et al.
patent: 4689371 (1987-08-01), Elmore et al.

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