Spherulite-micronizing agent for crystalline fluororesin crystalline fluororesin composition containing micronizing agent
AssigneeDaikin Industries, Ltd.
InventorsKen Okanishi, Minoru Yoshida, Tatsuo Suzuki, Tetsuo Shimizu, Takahisa Aoyama
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Abstract
Spherulites in a molded article obtained from a melt-processable crystalline fluorine-containing resin composition are minimized to give the transparent molded article having a smooth surface and being resistant to contamination. An agent for minimizing spherulite size which comprises an amorphous fluorine-containing polymer or a fluorine-containing multi-segment polymer. The fluorine-containing multi-segment polymer comprises an amorphous segment and a crystalline segment.
Claims12
A crystalline fluorine-containing resin composition comprising a melt-processable crystalline fluorine-containing resin and an agent for minimizing spherulite size of a crystalline fluorine-containing resin;
- said agent being a particle comprising a fluorine-containing multi-segment polymer comprising (A) an amophous fluorine-containing polymer chain segment and (B) a crystalline fluorine-containing polymer chain segment comprising 80 to 100% by mole of tetrafluoroethylene recurring unit and 0 to 20% by mole of a recurring unit represented by the formula (I):
- CF2=CF−Rf1 (I)
- wherein Rf1 is CF3 or ORf2, in which Rf2 is perfluoroalkyl group having 1 to 5 carbon atoms.
Dependencies are inferred from the claim text.