Modified polytetrafluoroethylene fine powder

Details Modified polytetrafluoroethylene fine powder Modified polytetrafluoroethylene fine powder

1997-03-27

1998-03-24

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526249, 526206, C08F 1624

Patent

active

057313946

ABSTRACT:
Polytetrafluoroethylene (PTFE) fine powder is provided which exhibits both low rheometer extrusion pressure and high adhesion to wire by incorporating into the free powder the combination of perfluoro(alkyl) ethylene such as perfluoro(n-butyl) ethylene with fluoro(alkyl vinyl ether), such as perfluoro(propyl vinyl ether), or fluoroolefin such as hexafluoropropylene as modifiers of the PTFE fine powder. The modified PTFE fine powder is made by aqueous dispersion copolymerization of TFE with the modifying monomers, with the addition of molecular weight reducing agent towards the end of the polymerization reaction.

REFERENCES:
patent: 3819594 (1974-06-01), Holmes et al.
patent: 4792594 (1988-12-01), Gangal et al.
patent: 4837267 (1989-06-01), Malhotra
patent: 4904726 (1990-02-01), Morgan et al.
Polymer Technology Dictionary--Sep. 17, 1997 p. 150.

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