B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/34 (2006.01) B29D 23/18 (2006.01) B32B 1/08 (2006.01) B32B 27/32 (2006.01) F16L 11/08 (2006.01)
Patent
CA 2434125
A multilayer hose for compressed air, comprising: an inner layer in contact with the compressed air, chosen from polyamides, polyamide/polyolefin blends with a polyamide matrix, copolymers having polyamide blocks and polyether blocks, and blends of polyamides with copolymers having polyamide blocks and polyether blocks; an outer layer made of polyamide chosen from PA-11, PA-12, aliphatic polyamides resulting from the condensation of an aliphatic diamine having from 6 to 12 carbon atoms and of an aliphatic diacid having from 9 to 12 carbon atoms, and 11/12 copolyamides either having more than 90% nylon-11 units or more than 90% nylon-12 units. At least one interlayer may be placed between the inner layer and the outer layer chosen from polyamide/polyolefin blends with a polyamide matrix, copolymers having polyamide blocks and polyether blocks, and blends of polyamides with copolymers having polyamide blocks and polyether blocks. A reinforcing braid may be placed between the inner layer and the interlayer and/or between the interlayer and the outer layer.
Atofina
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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