Coated polyester film and polyester/polyolefin laminates produce

Details Coated polyester film and polyester/polyolefin laminates produce Coated polyester film and polyester/polyolefin laminates produce

1982-08-02

1983-10-18

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Composite

Of polyester

428500, 428516, 428522, 428910, B32B 2708, B32B 2736

Patent

active

044106009

ABSTRACT:
A coated polyester film suitable for producing polyester/polyolefin laminates consists of biaxially oriented poly(ethylene terephthalate) film coated with a cross-linked styrene copolymer by deposition from an aqueous coating composition which comprises (A) a copolymer containing 50-75 mol % of styrene units and 25-50 mole % of comonomer units providing carboxylic groups (10-50 mole %) and alkyl carboxylate groups (20-50 mole %) and (B) a melamine/formaldehyde cross-linking agent. The styrene copolymer (A) is preferably a water-soluble copolymer of styrene and maleic anhydride partially converted into butyl ester and partially neutralized with ammonia, and the cross-linking agent (B) is conveniently hexamethoxymethylmelamine. The polyolefin layer in the laminates produced may in particular be of low-density polyethylene.

REFERENCES:
patent: 4328283 (1982-05-01), Nakadate et al.

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