B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 1/08 (2006.01) B32B 27/34 (2006.01) C08L 77/00 (2006.01) F16L 11/04 (2006.01) F16L 11/20 (2006.01) C08L 33/24 (2006.01)
Patent
CA 2114518
A plastic pipe having improved resistance to chemicals and improved mechanical properties is disclosed. The pipe comprises at least three layers: an outer layer, an intermediate layer made of a moulding compound based on a mixture of a polyamide and a polyglutarimide and an inner layer made of a moulding compound based on a polyvinylidene fluoride. The outer layer is preferably made of a moulding compound based on a polyamide. The pipe has an outstanding resistance to and a good barrier action with respect to diffusion of (petro) chemicals, solvents and fuels. Since the adjacent layers are adhesively bonded to one another, no delamination occurs on thermal expansion or flexing of the pipe. The pipe is preferably used in the motor vehicle sector, for carrying brake, cooling and hydraulic fluids and fuel.
Boer Michael
Feinauer Roland
Herrmann Hans-Dieter
Jadamus Hans
Ries Hans
Degussa Ag
Fetherstonhaugh & Co.
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