Patent ID: 6340511
Filing Date: 2002-01-22
Classification: B32B,F16L,Y10T

Abstract:
A fuel hose having improved interlayer peel strengths and improved ozone resistance as measured in an ozone test using 40Â° C., 50 pphr ozone and 20% elongation comprising an inner layer formed of a fluororubber and an outer layer formed of a blend of an acrylonitrile-butadiene rubber and polyvinyl chloride and adhered to said inner layer by vulcanization, wherein said polyvinyl chloride in said blend has an average polymerization degree of from 700 to 1,750 and is contained in an amount of from 15 to 45 parts by weight per 100 parts by weight of said blend; a carboxylic acid 1,8-diazabicyclo-(5,4,0)-undecene-7 salt (DBU salt) represented by formula (1) where R denotes a saturated or unsaturated hydrocarbon radical having a chain structure and/or a cyclic structure, or a derivative thereof, and the structure optionally contains atoms other than carbon atoms and hydrogen atoms, is incorporated in said blend; and a polyol-crosslinking-agent-containing vulcanizing agent is incorporated in said fluororubber.