Graphite fluoride coated with organic polymer and method of prep

Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter

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428403, 525 50, 525 63, C08F 28900, C08K 304

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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.

REFERENCES:
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patent: 3953657 (1976-04-01), Yamaguchi et al.
patent: 3983564 (1976-09-01), Nakazawa et al.
patent: 4039697 (1977-08-01), Isawa et al.
patent: 4129549 (1978-12-01), Kahane
patent: 4139474 (1979-02-01), Watanabe et al.
patent: 4272601 (1981-06-01), Tokura et al.
"Fluorine Chemistry and Industry--(II) Progress and Application", N. Watanabe (Ed.), Tokyo (1973), pp. 68-69 w/trans.

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