Copolyester and polyester film having said copolyester as subbin

Details Copolyester and polyester film having said copolyester as subbin Copolyester and polyester film having said copolyester as subbin

1989-12-26

1990-12-18

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528275, 528294, 528295, 528298, 528302, 528305, 528307, 5283086, 528390, 528391, 524605, 525444, C08G 6302

Patent

active

049787403

ABSTRACT:
There is disclosed a copolyester which comprises at least four compositions of: (A) terephthalic acid, and/or its ester forming derivative (terephthalic acid component) and isophthalic acid and/or its ester forming derivative (isophthalic acid component) with a molar ratio of 30/70 to 70/30; (b) 5 to 15 mole % of a dicarboxylic acid having sulfonate group and/or its ester forming derivative based on the all dicarboxylic acid components; (C) an alicyclic dicarboxylic acid and/or its ester forming derivative; and (D) 50 mole % of ethylene glycol based on the all glycol components; and a polyester film which comprises a subbing layer containing the copolyester provided on at least one side of a polyester film base.

REFERENCES:
patent: 4478907 (1984-10-01), Van Gossum et al.
patent: 4605591 (1986-08-01), Nose et al.

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