FLUORIDATED COMPOUNDS FOR FLUOROPOLYMERS Russian patent published in 2018 - IPC C07C17/25 C07C17/275 C08F214/22 C07C19/16 C07C21/17 C07C21/18 

FIELD: chemistry.

SUBSTANCE: invention relates to a partially fluorinated compound I (CF₂)_xCH=CH₂, where x is 3, as well as the method for its preparation, comprising the reaction of a compound of the formula I (CF₂)_xI with ethylene to produce a compound of the formula I (CF₂)_xCH₂CH₂I and the dehydroiodination thereof to obtain the claimed compound (the value of x in these formulas is 3). The invention relates to a fluoropolymer for vulcanization comprising a polymerized reaction product of: (a) a partially fluorinated compound and (b) a fluorinated olefin monomer; to a rubber product for sealing moulded from a vulcanized fluoropolymer; to a process for producing a fluoropolymer, comprising: (a) providing a partially fluorinated compound, a fluorinated olefin monomer, and an initiator; and (b) polymerizing a partially fluorinated compound and a fluorinated olefin monomer to produce a fluoropolymer.

EFFECT: good physical properties, vulcanization properties and curing time, long-term stability.

13 cl, 2 tbl, 4 ex