Process for preparing polyvinylidene fluoride copolymer

Details Process for preparing polyvinylidene fluoride copolymer Process for preparing polyvinylidene fluoride copolymer

2007-04-24

2007-04-24

Smith, Duane (Department: 1724)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S242000, C526S307000, C526S923000, C528S490000, C528S50200C, C428S422000, C428S500000, C210S702000, C210S703000, C210S705000, C210S723000, C156S182000

Reexamination Certificate

active

10528654

ABSTRACT:
The present invention provides a polyvinylidene fluoride copolymer capable of forming a uniform film, a solution of the copolymer and a thin film comprising the polyvinylidene fluoride copolymer. The polyvinylidene fluoride copolymer of the present invention is characterized in that the ratio of the scattered-light intensity (I) for a 15% solution of the polyvinylidene fluoride copolymer in dimethylformamide solvent to the scattered-light intensity (I0) for dimethylformamide, (I/I0), is 10 or lower. The polyvinylidene fluoride copolymer solution comprises the polyvinylidene fluoride copolymer and an organic solvent capable of dissolving the copolymer.

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