Composite of polyvinylidene fluoride and incompatible thermoplastics - has intermediate layer of poly:alkyl methacrylate! and is useful for tube, film and sheet prodn.

摘要

Composite consists of a combination of polyalkyl methacrylate (I) with polyvinylidene fluoride (PVDF) and of (I) with a thermoplastic polymer (II), which is incompatible with PVDF. The composite has =1 outer surface of PVDF and a surface of (II). PVDF and (II) pref. are joined through (a substance contg.) (I). The composite pref. is produced by coextrusion of (I) or a mixt. contg. =30 wt. % (I) between PVDF and (II). The composite can be made into tubes, hoses, profiles, films and sheets (suitable for thermoforming). It has a homogeneous structure, in which the components are intimately bonded.