Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1982-10-18
1985-12-10
Lesmes, George F.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
428403, 525 50, 525 63, C08F 28900, C08K 304
Patent
active
045579741
ABSTRACT:
Graphite fluoride, such as (CF).sub.n or (C.sub.2 F).sub.n, in powder form coated with a vinylic polymer, e.g. polymethyl methacrylate, which is bonding to the surfaces of the graphite fluoride particles by graft polymerization. The polymer-coated graphite fluoride retains unique properties of graphite fluoride such as high lubricating ability, can readily be dispersed in water and organic liquids, and can readily be press-shaped with or without the addition of a synthetic resin powder. The polymer-coated graphite fluoride is prepared by dispersing graphite fluoride in powder form and at least one vinylic monomer which undergoes radical polymerization in a mixture of water and either a water-soluble organic solvent or a surface-active agent, and then adding a polymerization initiator to the aqueous dispersion. The polymerization reaction takes place even at room temperature and can be promoted by heating up to 70.degree. C.
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"Fluorine Chemistry and Industry--(II) Progress and Application", N. Watanabe (Ed.), Tokyo (1973), pp. 68-69 w/trans.
Sakanoue Akira
Tsukuda Hitoshi
Central Glass Company Limited
Lesmes George F.
Swisher Nancy A. B.
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