Vinyl acetate/ethylene copolymer emulsions exhibiting both...

Details Vinyl acetate/ethylene copolymer emulsions exhibiting both... Vinyl acetate/ethylene copolymer emulsions exhibiting both...

C - Chemistry, Metallurgy

08

F

400/4918, 400/65

C08F 218/08 (2006.01) C08F 210/02 (2006.01) C09J 131/04 (2006.01) C08L 29/04 (2006.01)

Patent

CA 1256229

ABSTRACT A vinyl acetate/ethylene copolymer emulsion exhibiting both partially-and fully-hydrolyzed polyvinyl alcohol compatibility which comprises an aqueous colloidal dispersion of a copolymer prepared by the emulsion polymerization of vinyl acetate and ethylene in the presence of a polyvinyl alcohol stabilizing system having an 8 to 10 mole% residual vinyl acetate content, especially comprising a mixture of a polyvinyl alcohol having a 3 to 6 mole% vinyl acetate content and a polyvinyl alcohol having a 10 to 14 mole% vinyl acetate content in a ratio that yields an average residual vinyl acetate content of 8 to 10 mole%. When blended with a partially-or fully-hydrolyzed polyvinyl alcohol to provided an adhesive composition, such compositions demonstrate an enhanced placicizer thickening.

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