Blends of fluoropolymer and plasticized polyvinyl chloride

Abstract

Compatibilizer compounds for melt-mixed blends of plasticized PVC and fluoropolymers, having acrylate functionality, wherein the resulting blends exhibits good mechanical and dielectric properties and are useful for wiring and cable applications.

1 . An ECTFE-g-poly(MMA) compatibilizer compound prepared by mixing ECTFE, 0.5 phr peroxide, 8-20 phr MMA under high shear at approximately 200° C. for approximately 10 minutes.  
     
     
         2 . An ECTFE-g-poly(MMA) compatibilizer compound prepared by mixing ECTFE, 0.5 phr peroxide, 4 phr MMA and 4 parts styrene at high shear at approximately 200° C. for approximately 10 minutes.  
     
     
         3 . The compatibilizer compound of claim  23  or claim  24  purified by precipitation into cold acetone from a xylene solution at 130° C.  
     
     
         4 . A butyl methacrylate (BMA)-g-Halar 353 compatibilizer compound prepared by mixing ECTFE, 1 phr of peroxide, and 20 phr of BMA at high shear at 195° C. for approximately 10 minutes.  
     
     
         5 . An ethlylene acrylate compatibilizer compound for melt-mixing with plasticized PVC and ECTFE prepared by mixing ECTFE and ethlylene acrylate copolymer at high shear at 200° C.