Process for the preparation of a fully hydrolyzed polyvinyl...

Details Process for the preparation of a fully hydrolyzed polyvinyl... Process for the preparation of a fully hydrolyzed polyvinyl...

C - Chemistry, Metallurgy

08

L

400/1317, 400/54

C08L 61/28 (2006.01) B32B 27/04 (2006.01)

Patent

CA 1149541

ABSTRACT OF THE DISCLOSURE A process for preparing a fully hydrolyzed poly- vinyl alcohol modified melamine-formaldehyde resin useful in decorative laminates is disclosed. The process comprises reacting melamine, formaldehyde, and fully hydrolyzed poly- vinyl alcohol at 80-90°C. until the reaction product has a water tolerance of about 300% to 1000% in 5°C. water. The mole ratio of melamine to formaldehyde is from about 1:1.5 to about 1:1.8, respectively.

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