Meta, para-substituted isopropylidene bisphenols and methods for

Details Meta, para-substituted isopropylidene bisphenols and methods for Meta, para-substituted isopropylidene bisphenols and methods for

1978-12-06

1980-12-16

Helfin, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568641, 568722, 568723, 568726, 260 4595F, 260 4595G, 528201, C07C 43205, C07C 3916, C07C 4100

Patent

active

042399181

ABSTRACT:
Meta,para-substituted isopropylidene bisphenols are provided and methods for making such materials. Phenol, or substituted phenol is condensed with a meta-substituted isopropenyl phenol or a meta-hydroxy-.alpha.,.alpha.-dimethylbenzyl alcohol in the presence of an acid catalyst. The resulting meta,para-substituted isopropylidene bisphenols can be used as stabilizers for polyvinyl chloride resins and as intermediates for making high performance thermoplastics having chemically combined meta,para-isopropylidene diphenoxy units.

REFERENCES:
patent: 2464207 (1949-03-01), Bender et al.
patent: 3264357 (1966-08-01), Webb et al.
patent: 3359281 (1967-12-01), Schlichting et al.
patent: 3488407 (1970-01-01), Schall et al.
patent: 3758597 (1973-09-01), Buysch et al.

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