发明名称 |
METHOD FOR PREPARING POLY(VINYL TRIFLUOROACETATE) AND POLY(VINYL TRIFLUOROACETATE/VINYL ESTER) IN THE ABSENCE OF CHLOROFLUOROCARBON SOLVENT |
摘要 |
A method for the production of poly(vinyl trifluoroacetate) and copolymers thereof with vinyl esters is described. Poly(vinyl trifluoroacetate) (PVTFA) is obtained in essentially quantitative yield under mild conditions by using non-chlorofluorocarbon solvents comprising siloxanes or perfluorinated fluids. Hexamethyl disiloxane is a particularly useful example of such solvents. 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 commercial route to syndiotactic polyvinyl alcohol. |
申请公布号 |
WO9513308(A1) |
申请公布日期 |
1995.05.18 |
申请号 |
WO1994US12783 |
申请日期 |
1994.11.07 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
EIAN, GILBERT, L. |
分类号 |
C08F2/06;C08F8/12;C08F18/04;C08F218/02;C08G77/04 |
主分类号 |
C08F2/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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