Patent ID: 8609756

Claim:
A polymeric composition based on a polyvinylidene fluoride homopolymer and a thermoplastic fluorocopolymer, said composition possessing an apparent melt viscosity not exceeding 60 000 Pa·s at a shear rate of 1 s −1 , a ductile-brittle transition temperature below +5° C. and a weight loss in air at 150° C. of 5% or less, said composition comprising: (A) 45-80% by weight relative to the total weight of (A) and (B) of at least one polyvinylidene fluoride homopolymer having an intrinsic viscosity of at least 1.20 and not greater than 2.30 dl/g; (B) 20-55% by weight relative to the total weight of (A) and (B) of at least one thermoplastic copolymer of vinylidene fluoride and at least one other fluoromonomer, said thermoplastic copolymer having an intrinsic viscosity of from 0.92 to 2.3 dl/g; and (C) 1-35% by weight relative to the total weight of (A) and (B) of at least one low-molecular-weight vinylidene fluoride polymer having an intrinsic viscosity η not exceeding 0.8 dl/g, the blend of (A) and (B), in the absence of (C), possessing an average intrinsic viscosity η blend of from 1.20 dl/g or higher to less than 2.0 dl/g.