Base film for photographic film

Details Base film for photographic film Base film for photographic film

1994-04-06

1995-10-10

Neville, Thomas R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

430523, 430537, 430531, 428480, 428213, 428220, 528272, 528298, G03C 176

Patent

active

054570174

ABSTRACT:
A base film for a photographic film, wherein (A) the base film is formed of a polyethylene-2,6-naphthalenedicarboxylate copolymer formed from 2,6-naphthalenedicarboxylic acid as a main acid component and ethylene glycol as a main glycol component; (B) a solution of 10 mg/ml of said copolymer in a hexafluoroisopropanol/chloroform mixed solvent having a hexafluoroisopropanol/chloroform weight ratio of 2/3 shows a light transmittance, T.sub.400, of at least 97%/cm at a wavelength of 400 nm; (C) the film has a yellow index, Y.sub.ID, of 5 or less; and (D) the film has a haze value of 2.0% or less.

REFERENCES:
patent: 3875119 (1975-04-01), Aoki et al.
patent: 5096803 (1992-05-01), Kanetake et al.
patent: 5288601 (1994-02-01), Greener et al.
patent: 5326689 (1994-07-01), Murayama
patent: 5334457 (1994-08-01), Wada et al.
patent: 5380577 (1995-01-01), Hamano et al.

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