Process for preparation of filter-containing polytetrafluoroethy

Details Process for preparation of filter-containing polytetrafluoroethy Process for preparation of filter-containing polytetrafluoroethy

1980-07-24

1984-05-29

Lilling, Herbert J.

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

Synthetic resins

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

264127, 524514, 524545, 525180, 526255, 528498, 528499, C08K 502, C08J 316

Patent

active

044516169

ABSTRACT:
A process for preparation of filler-containing polytetrafluoroethylene fine powder by coagulating polytetrafluoroethylene together with at least one filler selected from the group consisting of polyimide resins, polyamide-imide resins, polyamide resins and carbon fiber powders from their aqueous dispersion, characterized in that a water-insoluble organic liquid having a boiling point of from 30.degree. to 150.degree. C. and a surface tension of not more than 35 dyne/cm at 20.degree. C. is added to the aqueous dispersion under agitation at any stage from the start to the end of the coagulation.

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patent: 4143110 (1979-03-01), Morozumi et al.
patent: 4163142 (1979-08-01), Mansure
patent: 4241137 (1980-12-01), Izumo et al.

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