High molecular weight poly(vinyl acetate) and poly(vinyl alcohol

Details High molecular weight poly(vinyl acetate) and poly(vinyl alcohol High molecular weight poly(vinyl acetate) and poly(vinyl alcohol

1982-09-30

1984-07-31

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525 56, 525 62, 20415923, C08F 1804

Patent

active

044631383

ABSTRACT:
An improved poly(vinyl acetate) which on hydrolysis and reacetylation has an intrinsic viscosity of at least about 5 dL/g and an improved poly(vinyl alcohol) which on acetylation yields poly(vinyl acetate) having an intrinsic viscosity of at least about 5 dL/g. Such poly(vinyl acetate) can be prepared by photo-initiated free radical bulk polymerization of vinyl acetate with controlled low initiator concentration, polymerization temperature and reaction time. Such poly(vinyl alcohol) can be prepared by conventional alcoholysis of the poly(vinyl acetate).

REFERENCES:
Atkinson et al., European Polymer Journal, vol. 15, pp. 21-26 (1979).
Hobbs et al., Journal of Polymer Science, vol. XXII, pp. 123-135 (1956).
Burnett et al., Journal of Polymer Science, vol. XVI, pp. 31-44 (1955).
Matsumoto et al., Journal of Polymer Science, vol. XLVI, pp. 520-523 (1960).

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