Fluoropolymer composition
AssigneeSYENSQO SPECIALTY POLYMERS ITALY S.p.A.
InventorsAlessio Marrani, Liubov Chernysheva, Mattia Bassi
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Abstract
The present invention relates to a polymeric composition comprising a first polymer component C being selected from TFE/PAVE polymers comprising a small amount of chlorinated monomers selected from chlorotrifluoroethylene and dichlorodifluoroethylene and a second optional polymer component D being selected from TFE/PAVE polymers and being free from chlorine. The polymeric composition of the invention is characterized in that it has a total Cl content of from 0.01 to 0.25% by weight. The composition of the invention has very good adhesion on metals and plastics despite a very low total level of chlorine.
Claims24
A polymeric composition comprising:
- a first polymer component C said polymer component being selected from
- (ii) a polymer C2 comprising:
- from 75 to 99.89% by moles of recurring units derived from tetrafluoroethylene (TFE),
- from 0.01 to 5% by moles of recurring units derived from dichlorodifluoroethylene (R1112),
- from 0.1 to 10% by moles of recurring units derived from one or more perfluoroalkylvinylether (PAVE),
- (iii) a polymer C3 comprising:
- from 75 to 99.89% by moles of recurring units derived from tetrafluoroethylene (TFE),
- from 0.005 to 5% by moles of recurring units derived from dichlorodifluoroethylene (R1112),
- from 0.005 to 5% by moles of recurring units derived from chlorotrifluoroethylene (CTFE),
- with the provision that the total molar % of R112 and CTFE does not exceed 5% of the total moles of recurring units in the polymer C3,
- from 0.1 to 10% by moles of recurring units derived from one or more perfluoroalkylvinylether (PAVE),
- (iv) or mixtures thereof
- a second optional polymer component D, said polymer component D not comprising chlorine containing recurring units and comprising:
- from 80 to 99.9% by moles of recurring units derived from tetrafluoroethylene (TFE)—from 0.1 to 20% by moles of recurring units derived from one or more perfluoroalkylvinylether (PAVE)
- said polymeric composition being further characterized in that it has a total Cl content of from 0.01 to 0.25% by weight.
A polymeric composition comprising:
- a first polymer component C said polymer component being selected from (i) a polymer C1 comprising:
- from 75 to 99.89% by moles of recurring units derived from tetrafluoroethylene (TFE),
- from 0.01 to 5% by moles of recurring units derived from chlorotrifluoroethylene (CTFE),
- from 0.1 to 20% by moles of recurring units derived from one or more perfluoroalkylvinylether (PAVE),
- (ii) a polymer C2 comprising:
- from 75 to 99.9% by moles of recurring units derived from tetrafluoroethylene (TFE),
- from 0.01 to 5% by moles of recurring units derived from dichlorodifluoroethylene (R1112),
- from 0 to 20% by moles of recurring units derived from one or more perfluoroalkylvinylether (PAVE),
- (iii) a polymer C3 comprising:
- from 75 to 99.9% by moles of recurring units derived from tetrafluoroethylene (TFE),
- from 0.005 to 5% by moles of recurring units derived from dichlorodifluoroethylene (R1112),
- from 0.005 to 5% by moles of recurring units derived from chlorotrifluoroethylene (CTFE),
- with the provision that the total molar % of R1112 and CTFE does not exceed 5% of the total moles of recurring units in the polymer C3,
- from 0 to 20% by moles of recurring units derived from one or more perfluoroalkylvinylether (PAVE),
- (iv) or mixtures thereof
- a second polymer component D, said polymer component D not comprising chlorine containing recurring units and comprising:
- from 80 to 99.9% by moles of recurring units derived from tetrafluoroethylene (TFE)
- from 0.1 to 20% by moles of recurring units derived from one or more perfluoroalkylvinylether (PAVE)
- said polymeric composition being further characterized in that it has a total Cl content of from 0.01 to 0.25% by weight;
- and
- wherein said polymer component C is from 1 to 99% by weight of the polymeric composition and said polymer component D from 99 to 1% by weight of the polymeric composition.
Dependencies are inferred from the claim text.