申请人:KURARAY CO., LTD.
公开号:EP0112718A1
公开(公告)日:1984-07-04
A polyester containing aluminium atoms and monocarboxylic acid residues comprising constituent residues represented by the following formulas (I), (II), (III) and (IV):
where Ri, in its repeated occurrence in the polyester, represents one or more bivalent groups each derived by removal of both carboxyl groups from terephthalic acid, isophthalic acid, orthophthalic acid or a straight-chained C4-10 aliphatic dicarboxylic acid; R2, in its repeated occurrence in the polyester, represents one or more univalent groups derived by removal of the carboxyl group from, a CB-30 aliphatic or alicyclic monocarboxylic acid or C7-20 aromatic monocarboxylic acid; D, in its repeated occurrence in the polyester, represents one or more bivalent groups each derived by removal of both hydroxyl groups from a C2-10 aliphatic diol or a C6-8 alicyclic diol; and each of m, n, p1, p2, p3 and q is 0 or 1, the constituent residues being bonded together in the combinations (I)-(II), (I)-(III), (II)-(III), (II)-(IV), (III)-(III) and (III)-(IV) and via only one oxygen atom in each combination, the molar ratio (I):(II) being substantially 1:1, the molar ratio (I):(III) being in the range 1,000:1 to 100:5 and the molar ratio (III):(IV) being in the range 4:1 to 1:10, the polyester having an intrinsic viscosity of not less than 0.5 dl/g is excellent in adhesibility and can be used inter alia as an adhesive. Using the polyester as an adhesive or a base, laminates and laminated hollow vessels comprising the polyester and an ethylene-vinyl alcohol copolymer can be produced. The laminates and laminated hollow vessels are suited for use inter alia as packaging materials or containers for food and drink.
一种含有铝原子和单羧酸残基的聚酯,其组成残基由以下式子(I)、(II)、(III) 和(IV)表示:
其中,Ri,在聚酯中重复出现时,代表一个或多个二价基团,每个基团都是从对苯二甲酸、间苯二甲酸、邻苯二甲酸或直链 C4-10 脂肪族二羧酸中去除两个羧基而得到的;R2,在聚酯中重复出现时,代表一个或多个一价基团,这些基团是从 CB-30 脂肪族或脂环族一元羧酸或 C7-20 芳香族一元羧酸中去除羧基而得到的;在聚酯中重复出现的 D 代表一个或多个二价基团,每个二价基团通过从 C2-10 脂肪族二元醇或 C6-8 脂环族二元醇中去除两个羟基而衍生;m、n、p1、p2、p3 和 q 中的每一个均为 0 或 1,组成残基以 (I)-(II)、(I)-(III)、(II)-(III)、(II)-(IV)、(III)-(III) 和 (III)-(IV) 的组合键合在一起,且在每个组合中仅通过一个氧原子,摩尔比 (I):(II)基本上为 1:1,摩尔比(I):(III)在 1,000:1 至 100:5 的范围内,摩尔比(III):(IV)在 4:1 至 1:10 的范围内,本征粘度不小于 0.5 dl/g 的聚酯具有优异的粘合性,可用作粘合剂等。使用聚酯作为粘合剂或基料,可以生产由聚酯和乙烯-乙烯醇共聚物组成的层压板和层压空心容器。这种层压板和层压中空容器特别适合用作食品和饮料的包装材料或容器。