Vinyl acetate/ethylene copolymer emulsions exhibiting both parti

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

1984-02-29

1985-06-04

Ivy, C. Warren

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524503, 524297, C08F 230, C08F 1808, C08L 3104

Patent

active

045215618

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 plasticizer thickening.

REFERENCES:
patent: 3661696 (1972-05-01), Knutson
patent: 3734819 (1973-05-01), Knutson
patent: 3769151 (1973-10-01), Knutson
patent: 3827996 (1974-08-01), Beresniewicz
patent: 4043961 (1977-08-01), Beresniewicz
patent: 4118357 (1978-10-01), Brabetz
patent: 4133791 (1979-01-01), Kemenater

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