Patent ID: 7375159
Filing Date: 2008-05-20
Classification: C08L

Abstract:
1. A blend of a PVDF (polyvinylidene fluoride) homopolymer or copolymer of a comonomer containing a vinyl group capable of being opened by the action of free radicals in order to be polymerized and which contains, directly attached to this vinyl group, at least one fluorine atom, a fluoroalkyl group or a fluoroalkoxy group, said PVDF comprising: a fraction of non-transferred chains of which are insoluble in DMF, DMSO and NMP, said fraction having a dynamic viscosity of greater than 50 kpoise at 230° C. and at a shear rate of 100 s with an ABC triblock copolymer, blocks A, B and C being linked together in this order, each block being either a homopolymer or a copolymer obtained from two or more monomers, the A block being linked to the B block and the B block to the C block by means of a covalent bond or of an intermediate molecule linked to one of these blocks via a covalent bond and to the other block via another covalent bond, and such that: