Multilayer film structure

Details Multilayer film structure Multilayer film structure

1992-10-20

1995-01-10

Sluby, P. C.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428354, 428412, 428414, 428482, 428483, 428516, 428520, B32B 712, B32B 2736

Patent

active

053805879

ABSTRACT:
A printable film structure comprising a polymeric film substrate having on at least one surface thereof a prime coating of the type which causes destructive film blocking between contacting layers of such coated films, said prime coating having thereon a continuous copolyester coating consisting essentially of the polyester condensation product of the following monomers or their polyester forming equivalence:
(a) about 60 to 75 mole % of terephthalic acid;
(b) about 15 to 25 mole % of at least one aliphatic dicarboxylic acid of the formula HOOC(CH.sub.2).sub.n COOH, wherein n ranges from about 1 to 11;
(c) greater than from about 6 up to about 15 mole % of at least one sulfomonomer containing an alkali metal sulfonate group attached to a dicarboxylic aromatic nucleus; and
(d) stoichiometric quantities of about 100 mole % of at least one copolymerizable aliphatic or cycloalphatic alkylene glycol having from about 2 to 11 carbon atoms.

REFERENCES:
patent: 3230175 (1966-01-01), Martens
patent: 3719629 (1973-03-01), Martin et al.
patent: 4214039 (1980-07-01), Steiner et al.
patent: 4525419 (1985-06-01), Posey et al.

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