Process for the preparation of a fully hydrolyzed polyvinyl alco

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

1980-10-30

1982-01-19

Pertilla, Theodore E.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

260 173, 428511, C08L 6128

Patent

active

043118046

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

REFERENCES:
patent: 3458465 (1969-07-01), Rehnelt et al.
patent: 4138445 (1979-02-01), Nogi et al.

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