Process for manufacturing polyvinyl alcohol polymers containing

Details Process for manufacturing polyvinyl alcohol polymers containing Process for manufacturing polyvinyl alcohol polymers containing

1996-05-21

1998-02-17

Reddick, Judy M.

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

Synthetic resins

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

525386, C08F 800

Patent

active

057192316

ABSTRACT:
This invention relates to an improved process for the production of polyvinyl alcohol containing keto-ester groups wherein a polymer containing polyvinyl alcohol units is contacted with a compound having keto-ester forming groups under conditions for forming keto-ester groups on the polymer. The improvement in the process comprises:
contacting a solid polymer containing vinyl alcohol units with a liquid phase acetoacetate of the formula: ##STR1## where R is chosen independently from alkyl groups under conditions for converting the alcohol functionality to the keto ester form; and then, removing unreacted acetoacetate forming group and volatile byproduct alcohol from the solid polymer.

REFERENCES:
patent: 2474095 (1949-06-01), Cornthwaite et al.
patent: 2536980 (1951-01-01), Jones et al.
patent: 4350788 (1982-09-01), Shimokawa et al.
patent: 4804715 (1989-02-01), Leonard et al.
patent: 5051468 (1991-09-01), Barnum
patent: 5051529 (1991-09-01), Witzeman et al.
patent: 5102951 (1992-04-01), Kei et al.
patent: 5145910 (1992-09-01), Wang
patent: 5196394 (1993-03-01), Nakazawa et al.
patent: 5219930 (1993-06-01), Chang
patent: 5288802 (1994-02-01), Walters

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