FLUOROPOLYMERS WITH IMPROVED SHRINKAGE BY CONSOLIDATION Russian patent published in 2008 - IPC C08L27/12 C08L27/10 C08J3/02 C08F214/18 C08F214/16 C08L27/18 C08F214/26 

FIELD: chemistry.

SUBSTANCE: invention describes consolidatable composition consisting of: a) fluoropolymer with co-polymerised blocks obtained from: i) CF₂=CF-R_f where R_f is fluorine or perfluoroalkyl C_1-C₈; ii), at least ca. 10 mol percent of hydrogen-containing olefine C₂-C₉, depending on the total number of molecules of the said CF₂=CF-R_f and the said olefine; iii) optionally, CX₂=CX-R where each X independently denotes an H, F or Cl atom, while R is a halogen or alkyl or alkenyl group C₁-C₈, which can contain one or more ester bonds; iv) optionally, bromine-containing consolidation monomer; v) bromine-containing salt; b) optionally, peroxide consolidation catalyst; and c) optionally, linking co-agent where the said fluoropolymer contains two or more average bromine atoms, including more than one end bromine atom per fluoropolymer chain, and where fluoropolymer is practically free from chain transport medium residues. Moreover, the invention describes process of obtaining such fluoropolymer compositions and goods with them.

EFFECT: fluoroelastomer with excellent physical properties.

16 cl, 2 tbl, 11 ex