Copolymer primer for aluminum alloy food and beverage...

C - Chemistry – Metallurgy – 23 – C

Patent

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C23C 22/78 (2006.01) B05D 7/00 (2006.01) B05D 7/14 (2006.01) B05D 7/24 (2006.01) B65D 1/09 (2006.01) B65D 85/72 (2006.01) C09D 1/00 (2006.01) C09D 5/00 (2006.01) C09D 127/06 (2006.01) C09D 133/02 (2006.01) C09D 143/02 (2006.01) C09D 163/00 (2006.01) C09D 167/00 (2006.01) C22C 21/06 (2006.01)

Patent

CA 2380542

Aluminum alloy sheet is provided (Fig. 1) with a primer layer comprising a reaction product of aluminum oxide or hydroxide and a vinylphosphonic acid-acrylic acid copolymer, coated with a polymer coating composition containing polyvinyl chloride or an epoxy. The polymer coated aluminum alloy sheet is shaped into container bodies for food containers or container end panels for aluminum food and beverage containers.

La présente invention concerne une feuille en alliage d'aluminium pourvue d'un apprêt contenant un produit de réaction d'oxyde d'aluminium ou d'hydroxyde et un copolymère d'acides vinylphosphonique-acrylique, recouverte d'une composition de revêtement polymère contenant du chlorure de polyvinyle ou une résine époxyde. On utilise la feuille en alliage d'aluminium revêtue de polymère pour former des contenants alimentaires ou des panneaux d'extrémité pour contenants de boissons et d'aliments en aluminium.

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