Foamable polyvinylidene fluoride and methods

Details Foamable polyvinylidene fluoride and methods Foamable polyvinylidene fluoride and methods

1986-07-15

1987-06-23

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 60, 521 79, 521 86, 521 89, 521 92, 521 94, 521 97, C08J 906

Patent

active

046753451

ABSTRACT:
Foamable and foamed polyvinylidene fluoride materials prepared by compounding the PVDF with a suitable nucleating agent of discreet insoluble particles, a blowing agent having an activation temperature above the melting point of the PVDF, and a dispersing aid to provide a substantially homogeneous powdered mixture that is then melt compounded with high shear melt blending means and the extruded and quenched to provide the foamable polyvinylidene fluoride material which can then be extruded as an insulating material on wire at a temperature sufficiently high to activate the blowing agent.

REFERENCES:
patent: 3305496 (1967-02-01), Riley, Jr. et al.
patent: 3321413 (1967-05-01), Riley, Jr. et al.
patent: 3868337 (1975-02-01), Gros
patent: 3983080 (1976-09-01), Suh
patent: 4425443 (1984-01-01), Georlette et al.
patent: 4615850 (1986-10-01), Pecsok

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