Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1994-07-08
1996-09-24
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526941, 526245, C08F 200
Patent
active
055591981
ABSTRACT:
A method for the production of poly(vinyl trifluoroacetate) and copolymers thereof with vinyl esters is described. Poly(vinyl trifluoroacetate) (PVTFA) is obtained in relatively high yield under mild conditions by using carbon dioxide under supercritical conditions as a solvent. Synthesis of syndiotactic PVTFA on a commercial scale without the use of environmentally-harmful solvents is made possible by the invention, which provides a convenient route to syndiotactic polyvinyl alcohol.
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Patent Application US SN 08/272,779 filed Jul. 8, 1994 (copy not included).
Eian Gilbert L.
Elsbernd Cheryl L. S.
Dowdall Janice L.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Sarofim N.
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