Patent ID: 6706351
Filing Date: 2004-03-16
Classification: B32B,F16L,Y10T

Abstract:
A multilayer composition comprising:A) a first layer consisting of copolymers of ethylene (E) with tetrafluoroethylene (TFE) and/or chlorotrifluoroethylene (CTFE); B) a second intermediate layer comprising thermoprocessable copolymers formed by: from 10 to 70% by moles, ethylene; from 30-90% by moles of a fluorinated monomer selected from tetrafluoroethylene or chlorotrifluoroethylene from 0.1 to 30% by moles referred to the sum of the previous monomers, of acrylic monomers of formula CH2&boxH;CHâ€”COâ€”Oâ€”R2â€ƒâ€ƒ(a) R2 is a C1-C20 hydrogenated radical from 1 to 20 carbon atoms, linear and/or branched, alkyl or cycloalkyl radical, optionally containing heteroatoms; one or more functional groups selected from OH, COOH, epoxide, ester and ether; or R2 is H; C) a third layer based on hydrogenated polymers; said multilayer composition containing in layer B) and/or in layer C) one or more crosslinking agents.