Patent ID: 6815024
Filing Date: 2004-11-09
Classification: B29C,C08L,F16L,Y10T

Abstract:
A method of manufacturing screen wash systems and head lamp wash systems of motor vehicles, comprising:fabricating the pipe components of said screen wash systems and head lamp wash systems from a pipe whose interior wall structural component is made from a molding composition comprised of: I. from 40 to 80 parts by weight of at least one polyamide selected from the group consisting of PA 46, PA 66, PA 610, PA 1010, PA 612, PA 1012, PA 11, PA 12, PA 1212, and PA 6,3-T, and II. from 60 to 20 parts by weight of a flexible polymer whose main chain consists of carbon atoms, where the amounts of I and II in parts by weight total 100, which molding composition when in the form of granules, comprises not more than 2% by weight of extractables, measured by extracting the granules with hot 100% ethanol under reflux conditions, and wherein the pipe is useful for the piping of aqueous, aqueous-alcoholic or purely alcoholic liquids.