RU2002133228A - NEW FLUORIZED POLYMERS WITH IMPROVED CHARACTERISTICS - Google Patents

Claims (21)

1. A fluorinated polymer containing polymer fragments resulting from the polymerization of a monomer mixture containing (i) from more than 30 to 46 wt.% Tetrafluoroethylene, (ii) from 5 to less than 30 wt.% Vinylidene fluoride, (iii) from more than 14 to 50% by weight of at least one ethylenically unsaturated monomer of the general formula CF ₂ = CFR _f , where R _f is a perfluoroalkyl group containing from 1 to 8 carbon atoms, and (iv) perfluorovinyl ether of the general formula CF ₂ = CF- ( OCF _{2 CF (R f)) a OR} 'f, where R _f - is the same group as in (iii), R' _f - perfluoroaliphatic group, containing i from 1 to 8 carbon atoms, and the value "a" has a value from 0 to 3. 2. A fluorinated polymer containing polymer fragments resulting from the polymerization of a monomer mixture containing (i) from 40 to 85 wt.% Tetrafluoroethylene, (ii) from 5 to less than 30 wt.% Vinylidene fluoride, (iii) from more than 14 to 50 wt.% at least one ethylenically unsaturated monomer of the general formula CF ₂ = CFR _f , where R _f is a perfluoroalkyl group containing from 1 to 8 carbon atoms, and (iv) from 0.1 to 15 wt.% perfluorovinyl ether of the general formula CF ₂ = CF- (OCF ₂ CF (CF ₃ )) _a OR ' _f , where the value “a” has a value from 0 to 3, and R' _{f is} perfluoroaliphatic I am a group containing from 1 to 8 carbon atoms. 3. The semi-crystalline fluorinated polymer according to claim 2, characterized in that it contains polymer fragments resulting from the polymerization of a monomer mixture containing from 40 to 80 wt.% Tetrafluoroethylene, from 10 to 30 wt.% Vinylidene fluoride, from 20 to 40 wt. % monomer of the general formula CF ₂ = CFR _f and from 0.1 to 15 wt.% perfluorovinyl ether. 4. The elastomeric fluorinated polymer according to claim 1, characterized in that it contains polymer fragments resulting from the polymerization of a monomer mixture containing from 25 to 45 wt.% Monomer of the General formula CF ₂ = CFR _f and from 0.1 to 15 wt. % perfluorovinyl ether. 5. The fluorinated polymer according to any one of the above paragraphs, characterized in that the perfluorovinyl ether is selected from the group consisting of

and combinations of these esters. 6. A multilayer product having a first layer containing a polymer corresponding to any of the above items, and a second layer containing a polymer selected from the group of thermoplastic or elastomeric polymers. 7. The multilayer shaped product according to claim 6, characterized in that it is resistant to hydrocarbon liquids. 8. The multilayer shaped product according to claim 6, characterized in that it has improved flexibility compared to a shaped product made of fluorinated polymer consisting essentially of polymer fragments resulting from the polymerization of a monomer mixture containing (i) tetrafluoroethylene, (ii ) vinylidene fluoride, (iii) at least one ethylenically unsaturated monomer of the general formula CF ₂ = CFR _f , where R _f is a perfluoroalkyl group containing from 1 to 8 carbon atoms, and (iv) perfluorovinyl ether of the general formula CF ₂ = CF- (OCF ₂ CF (R _f )) _A or ' _f , where R _f is the same group as in (iii), R' _f is a perfluoroaliphatic group containing from 1 to 8 carbon atoms, and “ a ”has a value from 0 to 3. 9. The multilayer shaped product according to claim 6, characterized in that it contains optical polymer fibers. 10. The product according to claim 6, characterized in that it is capable of dissipating electrostatic electricity. 11. A method of improving the flexibility of a polymer consisting essentially of polymer fragments resulting from the polymerization of a monomer mixture containing (i) tetrafluoroethylene, (ii) vinylidene fluoride, (iii) at least one ethylenically unsaturated monomer of the general formula CF ₂ = CFR _f where R _f represents a perfluoroalkyl group containing from 1 to 8 carbon atoms, comprising the joint polymerization of monomers (i), (ii) and (iii), corresponding to any one of the foregoing paragraphs of this invention with a perfluorovinyl ether of general formulas are CF ₂ = CF- (OCF _{2 CF (R f)) a OR} 'f, the relevant monomer (iii) in any of the foregoing paragraphs of this invention and having a value "a" equal to 1 to 3. 12. The method according to claim 11, characterized in that the polymer is thermoplastic. 13. Curable composition consisting of an elastomeric fluorinated polymer according to claim 4, and a curing agent for an elastomeric fluorinated polymer. 14. Curable composition according to item 13, characterized in that it contains additional fillers. 15. The fluorinated polymer according to any one of the above items, characterized in that R ' _f represents a perfluoroalkyl or perfluoroalkoxyl group. 16. The fluorinated polymer according to any one of claims 1, 2, 5 or 15, characterized in that the fluorinated polymer is selected from a semi-crystalline and elastomeric fluorinated polymer. 17. Fluorinated polymer according to any one of the above paragraphs, characterized in that the value of "a" has a value from 1 to 3. 18. The fluorinated polymer according to any one of claims 1 to 5, characterized in that its resistance to repeated bending is more than two times higher than the resistance to repeated bending of a polymer that does not contain perfluorovinyl ether units. 19. The fluorinated polymer according to any one of the above items, characterized in that it consists of fragments obtained by polymerization of four different monomers, and has a multimodal molecular weight distribution. 20. A fluorinated polymer containing polymer fragments resulting from the polymerization of a monomer mixture containing from 33 to 46 wt.% Tetrafluoroethylene, from 10 to 35 wt.% Vinylidene fluoride, from 20 to 50 wt.% Of a monomer of the general formula CF ₂ = CFR _f and from 0.1 to 15 wt.% perfluorovinyl ether. 21. A fluorinated polymer containing polymer fragments resulting from the polymerization of a monomer mixture containing from 45 to 85 wt.% Tetrafluoroethylene, from 10 to 28 wt.% Vinylidene fluoride, from 20 to 50 wt.% Of a monomer of the general formula CF ₂ = CFR _f and from 0.1 to 15 wt.% perfluorovinyl ether.