Copolyesters, method of making same and packaging materials

Details Copolyesters, method of making same and packaging materials Copolyesters, method of making same and packaging materials

1980-02-08

1982-05-18

Welsh, Maurice J.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C08G 6318

Patent

active

043306616

ABSTRACT:
Disclosed are copolyesters based on terephthalic acid, ethylene glycol and bis (4-.beta.-hydroxyethoxyphenyl) sulfone made by solid state polycondensation of a lower molecular weight polymer thereof, a process for making same, and containers, packages and packaging materials made therefrom. The copolyesters have low acetaldehyde content.

REFERENCES:
patent: 4145517 (1979-03-01), Go
patent: 4188357 (1980-02-01), Go
patent: 4196275 (1980-04-01), Go

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