Tetrafluoroethylene copolymer resin powder composition and proce

Details Tetrafluoroethylene copolymer resin powder composition and proce Tetrafluoroethylene copolymer resin powder composition and proce

1993-06-01

1995-03-14

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524520, 524521, 525189, 525197, 525199, C08J 510, C08K 310, C08L 2304

Patent

active

053978315

ABSTRACT:
This invention provides a tetrafluoroethylene (TFE) copolymer resin powder composition capable, upon rotational lining, of generating a corrosion-resistant, nonstick film, which is a thick film on a metal or a like substrate, essentially free of gas bubbles, and excellent in adhesion and peel resistance. The TFE-copolymer resin powder composition comprises granules which comprise particles of a TFE/perfluoro(alkyl vinyl ether) copolymer (PFA), polyphenylene sulfide (PPS) particles having an average particle size of 0.3-50 .mu.m, and a heat resistant filler. This invention also provides a process for manufacturing the TFE copolymer resin powder composition comprising either (1) granulating a mixture of PFA particles, PPS and a heat resistant filler in the presence of water and an organic liquid, or (2) mixing PFA, PPS, and a heat-resistant filler, compression-molding, and pulverizing.

REFERENCES:
patent: 4714756 (1987-12-01), Buckmaster
patent: 4914158 (1990-04-01), Yoshimura et al.
patent: 5006594 (1991-04-01), Rees
patent: 5093403 (1992-03-01), Rau et al.

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