Preparation of a modified polytetrafluoroethylene and use thereo

Details Preparation of a modified polytetrafluoroethylene and use thereo Preparation of a modified polytetrafluoroethylene and use thereo

1994-10-18

1996-06-25

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526247, C08F 408

Patent

active

055300782

ABSTRACT:
Polymerizing tetrafluoroethylene with modifying amounts of a perfluoro(alkyl vinyl ether) at temperatures below 60.degree. C. using permanganate or similar initiators by the suspension process and milling the raw polymer to an average particle size of from 10 to 50 .mu.m gives molding powders which are suitable for the preform free-sintering technique.

REFERENCES:
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patent: 3855191 (1974-12-01), Doughty, Jr. et al.
patent: 4078134 (1978-03-01), Kuhls et al.
patent: 4262101 (1981-04-01), Hartwimmer et al.
patent: 4338237 (1982-07-01), Sulzbach et al.
patent: 4576869 (1986-03-01), Malhotra
patent: 4639497 (1987-01-01), Knight et al.
patent: 4640955 (1987-02-01), Malhotra
European Search Report No. 94116301.6, dated Jan. 11, 1995.

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