Patent ID: 7939151
Filing Date: 2011-05-10
Classification: F16L,Y10T

Abstract:
1. A coolant line comprising: an outer layer comprising a polyamide molding composition; and an inner layer consisting of a polypropylene molding composition; wherein: the polyamide molding composition comprises PA612; the polypropylene molding composition comprises at least 50% by weight of polypropylene, at least 0.02% by weight of a heat stabilizer, and at least 0.01% by weight of a metal deactivator; the polypropylene is a propene-ethene block copolymer including 0.5 to 20% by weight of ethene in copolymerized form; the inner layer has a thickness of at least 0.3 mm; and the outer layer is the outermost layer of the coolant line.