Shaped article of vinylidene fluoride resin and process for prep

Details Shaped article of vinylidene fluoride resin and process for prep Shaped article of vinylidene fluoride resin and process for prep

1985-06-17

1987-06-02

Thurlow, Jeffery

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

2641761, 2642107, 2642108, 264216, D01D 5098, D01F 612

Patent

active

046705279

ABSTRACT:
Disclosed herein are a shaped article of vinylidene fluoride resin having an inherent viscosity of 0.85 to 1.4 dl/g, Huggins' constant of not more than 0.45, an average length of crystals in the direction of oriented molecular chains of the resin of longer than 200 .ANG., a birefringence of not less than 30.times.10.sup.-3 and a Young's modulus of not less than 450 kg/mm.sup.2 and a process preparing the shaped article comprising the steps of melt-extruding the resin, drafting the thus melt-extruded resin, and cooling the thus drafted resin.

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