Modified polyester films

Details Modified polyester films Modified polyester films

1979-08-14

1980-12-23

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

430961, G03C 178

Patent

active

042411700

ABSTRACT:
Polyester films are modified by the addition of a high molecular weight polyethylene glycol and an alkali metal salt of a sulfonic acid-substituted dicarboxylic acid ester to the reaction medium during the polymerization process. Films prepared for example, from diesters of terephthalic acid in the presence of the modifiers of this invention produce films which exhibit good permeability to water vapor.

REFERENCES:
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patent: 3052543 (1962-09-01), Bauer et al.
patent: 3160678 (1964-12-01), Lew
patent: 3160679 (1964-12-01), Lew
patent: 3455720 (1969-07-01), Davies et al.
patent: 3461468 (1969-08-01), Morgan et al.
patent: 3464852 (1969-09-01), Caldwell et al.
patent: 3560605 (1971-02-01), Siggel et al.
patent: 3563942 (1971-02-01), Heiberger
patent: 3779993 (1973-12-01), Kibler et al.
patent: 3853820 (1974-12-01), Vachon
patent: 4042565 (1977-08-01), Hoheisel et al.

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