Process for preparing adhesives having improved adhesion

Details Process for preparing adhesives having improved adhesion Process for preparing adhesives having improved adhesion

C - Chemistry, Metallurgy

09

J

C09J 131/04 (2006.01) B32B 7/12 (2006.01) C08F 218/08 (2006.01) C08F 261/04 (2006.01) C09J 131/02 (2006.01) C09J 133/06 (2006.01) C09J 151/00 (2006.01)

Patent

CA 2273535

The invention provides a process for preparing adhesives having improved adhesion, in the form of their aqueous dispersions or water-redispersible dispersion powders, by emulsion polymerization in the presence of polyvinyl alcohol with or without drying of the dispersion obtainable by this process, which comprises polymerizing a comonomer mixture comprising a) one or more monomers from the group consisting of the vinyl esters of unbranched and branched carboxylic acids of 1 to 10 carbon atoms, the esters of acrylic acid and methacrylic acid with branched and unbranched alcohols of 1 to 12 carbon atoms, vinylaromatic compounds, vinyl halides and alpha- olefins, and b) from 0.01 to 50% by weight, based on the overall weight of the comonomers, of a vinyl ester of alpha-branched tertiary monocarboxylic acids of 11 carbon atoms, in the presence of c) from 0.1 to 15% by weight, based on the overall weight of the comonomers, of polyvinyl alcohol.

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