Pipe for hot-water circulation

Details Pipe for hot-water circulation Pipe for hot-water circulation

F - Mech Eng,Light,Heat,Weapons

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F16L 9/12 (2006.01) B32B 1/08 (2006.01) B32B 5/16 (2006.01) B32B 27/04 (2006.01) B32B 27/28 (2006.01) C09K 5/00 (2006.01)

Patent

CA 2353856

The present invention provides a multilayered pipe for hot water circulation having excellent oxygen barrier properties and anti--crack properties, in particular, excellent anti-crack properties at low temperatures by using a thermoplastic resin composition comprising 50 to 99% by weight of an ethylene - vinyl alcohol copolymer (A) and 1 to 50% by weight of multilayered polymer particles (B).

Ce tuyau multicouche pour circulation d'eau chaude comprend une composition de résine thermoplastique comprenant (A) pour 50% à 99% de sa masse un copolymère d'éthylène/alcool vinylique, et (B) pour 1% à 50% de sa masse des particules de polymère en plusieurs couches. Ce tube présente d'excellentes propriétés de barrière contre l'oxygène et une bonne résistance aux craquelures, particulièrement aux basses températures.

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