Laminating adhesives for film/paper microwavable products

Details Laminating adhesives for film/paper microwavable products Laminating adhesives for film/paper microwavable products

B - Operations, Transporting

32

B

154/141, 400/904

B32B 7/12 (2006.01) C08F 218/04 (2006.01) C09J 131/02 (2006.01)

Patent

CA 1338886

Wet laminating adhesive capable of withstanding the stresses encountered during heat sealing operations are prepared from emulsion copolymers consisting essentially of 45 to 80% by weight of a vinyl ester of an alkanoic acid, having 1 to 13 carbonatoms, 10 to 30% ethylene, 5 to 30% of a dialkyl (c4 - c8) maleate, 0.5 to 2% of an N-methylol containing comonomer, 0.5 to 4% of an ethylenically unsaturated mono- or di-carboxylic acid, 0.2 to 3% of a stablizer and 0 to 1% of a polyunsaturates copolymerizable monomer. These specific emulsion copolymers are prepared utilizing standard aqueous emulsion polymerization procedures with hydroxyethylcellulose or polyvinyl alcohol as a protective colloid. The emulsion polymers thus produced provide superior wet laminating adhesive properties for use in substrates which are to be formed into microwavable packages or bags.

588205

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