Process for producing fluorinated copolymer, fluorinated copolymer, crosslinkable composition containing same and sealant
AssigneeNippon Mektron, Ltd.
InventorsTakashi Enokida, Okimasa Yamada
Life of this patent
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Abstract
Vinylidene fluoride and chlorotrifluoroethylene are copolymerized in the presence of a compound represented by the general formula I: InBrmR (I) wherein R represents a fluorohydrocarbon group, a chlorofluorohydrocarbon group, a chlorohydrocarbon group or a hydrocarbon group, and n is 0, 1 or 2 and m is 0, 1 or 2 provided that n+m≧2. This provides a process for producing a fluorinated copolymer which enables providing a fluorinated copolymer crosslinking product having mechanical properties satisfactory for practical use as sealants even if no inorganic additive is added thereto.
Claims6
A process for producing a fluorinated copolymer, comprising copolymerizing vinylidene fluoride and chlorotrifluoroethylene in the presence of a compound represented by the general formula I:
- InBrmR (I)
- wherein R represents a fluorohydrocarbon group, a chlorofluorohydrocarbon group, a chlorohydrocarbon group or a hydrocarbon group, and n is 0, 1 or 2 and m is 0, 1 or 2 provided that (n+m)≧2,
- and wherein whole amounts of the compound of the general formula (I), vinylidene fluoride and chlorotrifluoroethylene are charged in a reaction system prior to initiation of the copolymerization.
Dependencies are inferred from the claim text.