申请人:SHOWA DENKO KABUSHIKI KAISHA
公开号:EP0473823A1
公开(公告)日:1992-03-11
A laminate and process for producing the laminate, wherein the laminae comprises at least one ethylene-vinyl alcohol copolymer layer and at least one adhesive layer. The adhesive layer comprises a (i) random copolymer layer comprising ethylene units and radical-polymerizable acid anhydride units and is obtained through a polymerization during which (a) a first compoud having two or more double bonds per molecule or an antioxidant is added to the polymerization system; or (ii) a mixture of (a) a randam copolymer comprising ethylene units and radical-polymerizable acid anhydride units and (b) at least one menber selected form the group consisiting of (1) a secod compound having two or more hydroxyl groups per molecue, (2) a third compound having two or more epoxy groups per molecule, (3) a fourth compound obtained by partial ionic crosslinking of a copolymer of ethylene and an unsaturated carboxylic acid or a derivatives thereof, and (4) a salt of a metal of Group I or I of the periodic table.
一种层压板和生产该层压板的工艺,其中层压板包括至少一个乙烯-乙烯醇共聚物层和至少一个粘合剂层。粘合剂层包括:(i) 由乙烯单元和可自由基聚合的酸酐单元组成的无规共聚物层,该层通过聚合反应获得,在聚合反应过程中,(a) 在聚合体系中加入每分子有两个或两个以上双键的第一共聚物或抗氧化剂;或(ii) (a) 由乙烯单元和可自由基聚合的酸酐单元组成的共聚物和(b) 选自以下组别的至少一种单体的混合物:(1) 每摩尔有两个或两个以上羟基的第二种化合物,(2) 每摩尔有两个或两个以上羟基的第三种化合物,(3) 每摩尔有两个或两个以上羟基的第四种化合物、(2) 每分子具有两个或两个以上环氧基团的第三种化合物; (3) 通过乙烯与不饱和羧酸或其衍生物的共聚物部分离子交联得到的第四种化合物; (4) 元素周期表第 I 组或第 I 组金属的盐。