CURABLE FLUORINATED COPOLYMER, PREPARATION OF THE SAME AND ITS APPLICATION TO PAINT AND VARNISH

摘要

Curable fluoro copolymer containing the residues from copolymerisation of a fluoro monomer and of an allyl monomer, characterised in that … …  a) the residues of fluoro monomer originating from the combined use of tetrafluoroethylene and of at least one other fluoro monomer chosen from chlorotrifluoroethylene and vinylidene fluoride …  b) the allyl monomer is an allyl polyol of formula …… … …  R1 being H or CH2OH …  R2 being OH or CH2OH …  R3 being CH3 or OH …it being known that R1 and R3 cannot simultaneously be H and CH3 … and in that it contains: …  c) the residues of an allyl or acrylic monomer bearing a fluorocarbon chain of formula …… with … …  n being a value from 3 to 12 …  R4 being H or CH3 …  X being …… … … …This curable copolymer is obtained by copolymerisation in solution in an organic solvent. In solution in a suitable solvent, this copolymer is employed in paints or varnishes which resist stains and dirt.