Hydroxy-functional polyesters as thermoplastic barrier resins

Details Hydroxy-functional polyesters as thermoplastic barrier resins Hydroxy-functional polyesters as thermoplastic barrier resins

1991-05-13

1992-12-15

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 93, 528176, 528182, 528297, 528361, 525523, 525530, C08G 5900

Patent

active

051718200

ABSTRACT:
Polyesters having improved barrier to oxygen are normally solid, thermoplastic methylol polyesters having backbone repeating units containing pendent hydroxyl and methylol moieties and divalent organic moieties such as m-phenylene, p-phenylene, and isopropylidene diphenylene. Such polyesters are prepared by reacting diglycidyl esters of aromatic diacids such as diglycidyl terephthalate or diglycidyl ethers of dihydric phenols with diacids such as isophthalic acid.

REFERENCES:
patent: 3477990 (1969-11-01), Dante et al.
patent: 3948855 (1976-04-01), Perry
patent: 4661541 (1987-04-01), Batzill et al.
patent: 4742096 (1988-05-01), Craun

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