B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
18/54, 154/71, 1
B32B 15/08 (2006.01) B29C 63/48 (2006.01)
Patent
CA 1071084
Abstract of the Disclosure An olefin resin-metal bonded structure having a desirable combination of high corrosion resistance and peel strength, which comprises a metal substrate and an olefin resin layer bonded together through a primer layer, said primer layer containing (A) an oxidized polyethylene having an oxygen content of 0.1 to 10% by weight, a saponification value of 2 to 200, a density of 0.90 to 1.2 and an average molecular weight of 1000 to 50000 and (B) a coating-forming base resin having a density higher by at least 0.1 than the oxidized poly- ethylene and containing a functional group selected from hydroxyl and carbonyl groups at a concentration of at least 1 meq/g, the mixing weight ratio of the oxidized polyethylene (A) and the base resin (B) being within the following range: (A) : (B) = from 0.2 : 99.8 to 45 : 55, wherein said primer layer has a multi-layer structure in which each of the concentrations of the oxidized polyethylene (A) and the base resin (B) is changed with respect to the thickness direction with a certain gra- dient so that the base resin (B) is distributed predo- minantly on the side of the surface of the metal substrate and the oxidized polyethylene (A) is dis- tributed predominantly on the side of the surface of the olefin resin.
250640
Hotta Hisashi
Mori Fumio
Na
Toyo Seikan Kaisha Limited
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