Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1978-06-12
1980-03-18
Welsh, John D.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
96 67, 430495, 430533, 430537, G03C 180
Patent
active
041938038
ABSTRACT:
Disclosed herein are heat-activatable adhesive compositions comprising an amorphous condensation polymer which is characterized by having an acid component comprising a phthalic acid derivative and a glycol component comprising from about 15 to about 85 mole percent of (1) a linear aliphatic glycol having the structure HO--R--H wherein R is either: ##STR1## or --CH.sub.2 CH.sub.2 O--.sub.n wherein n is an integer from 2 to 4; and from about 85 to about 15 mole percent of (2) a branched aliphatic glycol having the structure: ##STR2## wherein R.sup.1 and R.sup.2 are alkyl. These polyester adhesives are further characterized as being soluble in halogenated solvents, having glass transition temperatures within the range of about -30.degree. C. to about 50.degree. C., and having high bonding strengths at elevated temperatures. They have been found useful in a variety of photographic materials, and particularly in photographic film units.
REFERENCES:
patent: 3013914 (1961-12-01), Willard
patent: 3372148 (1958-03-01), Wiener
Sandhu Mohammad A.
Tingler Kenneth L.
Eastman Kodak Company
Rosenstein Arthur H.
Welsh John D.
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