Process for the preparation of a polyvinyl alcohol complex...

Details Process for the preparation of a polyvinyl alcohol complex... Process for the preparation of a polyvinyl alcohol complex...

C - Chemistry, Metallurgy

08

F

402/7.2

C08F 230/06 (2006.01) C08F 8/14 (2006.01) C08F 8/42 (2006.01)

Patent

CA 1158392

HOE 80/F 004 PROCESS FOR THE PREPARATION OF A POLYVINYL ALCOHOL COMPLEX COMPOUND AND POLYVINYL ALCOHOL COMPLEX COMPOUND OBTAINED THEREBY Abstract of the invention: With polybasic inorganic acids, for example boric acid, polyvinyl alcohol forms complex compounds, which, in the form of a gel, are suitable as adhesives. PVAL complex compounds are prepared in simple manner by subjecting to alcoholysis a polyvinyl ester in the presence of a complexing agent. The reaction is carried out in alcoholic solution and the complexing agent should be soluble in alcohol. As starting material polyvinyl acetate is preferred, and methanol is preferred as alcohol. The PVAL complex compounds prepared in this way are used, inter alia as binders and thickening agents for coating substances.

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