Poly(ethylene terephthalate) (PET) copolymers containing both 1,

Details Poly(ethylene terephthalate) (PET) copolymers containing both 1, Poly(ethylene terephthalate) (PET) copolymers containing both 1,

1998-06-11

2000-08-15

Boykin, Terressa M.

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

Synthetic resins

From carboxylic acid or derivative thereof

528271, C08G 6302

Patent

active

061038571

ABSTRACT:
This invention relates to PET copolymer composition that have both 1,4-cyclohexanedimethal (CHDM) and isophthalic acid moieties copolymerized. These compositions have better oxygen and carbon dioxide barrier properties than either PET homopolymer or CHDM-modified PET copolymers. These copolymer compositions are useful for packaging applications (such as carbonated soft drink bottles) requiring barrier properties to oxygen and carbon dioxide at least as good or better than PET homopolymer.

REFERENCES:
patent: 4474918 (1984-10-01), Seymour et al.
patent: 4578437 (1986-03-01), Light et al.
Database WPI, Week 9710, Derwent Publications Ltd., London, GB; AN 97-106325; XP002079142 & KR 9 503 803 A (Tong Yang Nylon Co. Ltd.), Apr. 20, 1995.

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