Adhesive for gas barrier laminates and laminated films

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 163/00 (2006.01) B32B 7/12 (2006.01) B32B 17/10 (2006.01) B32B 27/36 (2006.01) B32B 27/38 (2006.01) B65D 30/02 (2006.01) C08G 59/50 (2006.01) C08L 79/02 (2006.01) C09J 179/02 (2006.01) C08L 63/00 (2006.01)

Patent

CA 2459379

An adhesive for laminates comprising as the main component an epoxy resin composition composed of an epoxy resin and an epoxy-curing agent, wherein the skeletal structure of formula (1) is contained in the cured article of the epoxy resin composition in an amount of 40 wt% or above. Since the adhesive exhibits both favorable adhesiveness to various film materials and high gas barrier properties, a layer having both gas barrier properties and adhesiveness can be formed from the adhesive, which makes it possible to produce packaging film laminates having high gas barrier properties without forming a gas barrier layer separately. (1)

L'invention concerne un adhésif pour stratifiés qui comporte comme constituant principal une composition de résine époxyde se composant d'une résine époxyde et d'un agent de traitement d'époxyde, la structure squelette représentée par la formule (1) étant contenue dans l'article traité de cette composition à raison d'au moins 40 % en poids. Cet adhésif présentant une bonne adhérence à diverses matières de film ainsi que des propriétés supérieures de barrière contre les gaz, on peut former à partir de celui-ci une couche possédant à la fois des propriétés d'adhérence et de barrière contre les gaz ; ce qui permet de produire des stratifiés de film de conditionnement à propriétés supérieures de barrière contre les gaz sans devoir former séparément une telle couche barrière.

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