Melt-shapeable fluoropolymer compositions

Details Melt-shapeable fluoropolymer compositions Melt-shapeable fluoropolymer compositions

1985-04-04

1986-11-25

Ziegler, Jacob

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

174102R, 252 51, 338 22R, 522156, C08L 2712

Patent

active

046249907

ABSTRACT:
Melt-shapeable polymeric compositions comprising a first fluoropolymer of relatively low crystallinity, e.g. a copolymer of tetrafluoroethylene and a perfluorinated comonomer, and a second fluoropolymer of relatively high crystallinity, especially a fluoropolymer obtained by irradiating PTFE or another fluoropolymer which cannot be melt-shaped in the absence of other polymers. The weight ratio of the first to the second polymer is preferably 0.3:1 to 2.5:1. The compositions have a wide variety of uses, for example as insulating materials or, if they contain carbon black or another conductive filler, as PTC conductive polymers.

REFERENCES:
patent: 3291864 (1966-12-01), Eldridge et al.
patent: 3838030 (1974-09-01), Kaguya et al.
patent: 4123401 (1978-10-01), Berghmans et al.

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