CO EXTRUDED, MULTI LAYER TUBING MADE FROM POLYAMIDE AND OLEFIN POLYMER MATERIALS.

摘要

A three layer, co extruded tube has (1) an inner polyamide layer, (2) a middle layer made from (a) a modified polyolefin, (b) a broad molecular weight distribution propylene polymer material, (c) a graft copolymer made from a backbone of propylene polymer material to which is grafted a methyl methacrylate methyl acrylate copolymer or a methyl methacrylate methacrylic acid copolymer, and (d) an olefin copolymer rubber, and (3) an outer layer made from (a) a broad molecular weight distribution propylene polymer material, (b) a graft copolymer made from a backbone of propylene polymer material to which is grafted a methyl methacrylate methyl acrylate copolymer or a methyl methacrylate methacrylic acid copolymer, and (c) an olefin copolymer rubber. The tubing is suitable for fuel systems, high pressure tubing, and other tubing for automotive applications.