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    • 4. 发明授权
    • Multilayer structure based on polyamides and graft copolymers having polyamide blocks
    • 基于聚酰胺的多层结构和具有聚酰胺嵌段的接枝共聚物
    • US07862872B2
    • 2011-01-04
    • US10804191
    • 2004-03-19
    • Martin BaumertSëbastien MicheneauThibault Montanari
    • Martin BaumertSëbastien MicheneauThibault Montanari
    • F16L11/04B29D23/00B32B1/08B32B27/08B32B37/00
    • B32B27/34B32B27/08B32B27/32B32B2439/00B32B2439/60B32B2597/00Y10T428/1352Y10T428/1393Y10T428/31728Y10T428/3175
    • The present invention relates to a multilayer structure based on polyamides and graft copolymers having polyamide blocks, comprising, in this order: a) a first layer (1) formed from a polyamide (A) or else a polyamide (A)/polyolefin (B) blend having a polyamide matrix; b) optionally, a tie layer (2a); c) a layer (2) based on a graft copolymer having polyamide blocks, formed from a polyolefin backbone and from at least one polyamide graft in which: the grafts are attached to the backbone by the residues of an unsaturated monomer (X) having a functional group capable of reacting with a polyamide having an amine end group; the residues of the unsaturated monomer (X) are attached to the backbone by grafting or copolymerization via its double bond; the layers (1), (2a) and (2) being successive and adhering to one another in their respective contact region. One particularly useful application relates to tubes for cooling circuits of internal combustion engines, such as the engines of cars or lorries.
    • 本发明涉及一种基于聚酰胺和具有聚酰胺嵌段的接枝共聚物的多层结构,其包括:a)由聚酰胺(A)或聚酰胺(A)/聚烯烃(B)形成的第一层(1) )共混物; b)任选的连接层(2a); c)基于具有聚酰胺嵌段的接枝共聚物的层(2),其由聚烯烃主链和至少一个聚酰胺接枝物形成,其中:所述接枝物通过不饱和单体(X)的残基与主链连接,所述不饱和单体 能够与具有胺端基的聚酰胺反应的官能团; 不饱和单体(X)的残基通过其双键的接枝或共聚连接到主链上; 层(1),(2a​​)和(2)在其各自的接触区域中相互连接并彼此附着。 一个特别有用的应用涉及用于内燃机的冷却回路的管,例如汽车或卡车的发动机。