申请人:GENCORP INC.
公开号:EP0503755A1
公开(公告)日:1992-09-16
An adhesive-forming composition comprising:
I. a prepolymer component having
(i) an isocyanate-terminated prepolymer obtainable by reacting an excess of at least one polyisocyanate, an oligomer or polymer thereof, or mixtures of these, with a polyol having a number average molecular weight of from 400 to 9000, and
(ii) 0-60% by weight of filler;
II. a curative component having
(iii) cross-linking polyol having number average molecular weight from 400 to 10000;
(iv) a catalyst or initiator;
(v) 0-60% by weight of filler, and
(vi) a polyamine for thickening,
characterised in that the polyamine comprises
(a) a primary aromatic polyamine having the formula
where R₁ is
or is the same as any of R₂ to R₆, and where R₂ to R₆ and R₇ to R₁₁ are independently selected from: H, NH₂, C₁ to C₅ alkyl, and phenyl;
A is an alkylene hydrocarbon containing 0 to 12 carbons and each molecule contains at least two NH₂ groups;
where R₁ is not Formula II, at least 4 of R₁ to R₆ are not H;
where R₁ is Formula II and A is 1 at least 4 of R₂ to R₁₁ groups are not H, and
Formula I is not diethyltoluene diamine, or
(b) a primary aromatic polyamine with fused polycyclic aromatic rings having at least two NH₂ groups per molecule; and having H, NH₂, C₁ to C₅ alkyl, or phenyl groups attached to the ring carbons which are not bridge-head carbons, or
(c) a mixture comprising (a) and/or (b).
一种粘合剂成型组合物,包括
I. 预聚物成分,具有
(i) 异氰酸酯封端预聚物,可通过将过量的至少一种多异氰酸酯、其低聚物或聚 合物或其混合物与平均分子量为 400 至 9000 的多元醇反应而获得,以及
(ii) 0-60% (按重量计)的填料;
二. 一种具有以下特性的固化成分
(iii) 交联多元醇,其平均分子量为 400 至 10000;
(iv) 催化剂或引发剂;
(v) 0-60% (重量百分比)的填料,以及
(vi) 用于增稠的聚胺、
其特征在于,聚胺包括
(a) 一次芳香族多胺,其式如下
其中 R₁ 是
或与 R₂ 至 R₆ 中的任一个相同,且其中 R₂ 至 R₆ 和 R₇ 至 R₁₁ 独立选自:H、NH₂、C₁ 至 C₅ 烷基和苯基;
A 是含 0 至 12 个碳原子的亚烷烃,每个分子至少含有两个 NH₂ 基团;
在 R₁ 不是式 II 的情况下,R₁ 至 R₆ 中至少有 4 个不是 H;
其中 R₁ 为式 II 且 A 为 1,R₂ 至 R₁ 中至少 4 个基团不是 H,且
式 I 不是二乙基甲苯二胺,或
(b) 初级芳香族多胺,具有融合的多环芳香环,每个分子至少有两个 NH₂基团;且环碳上连接有非桥头碳的 H、NH₂、C₁至 C₅ 烷基或苯基,或
(c) 包含(a)和/或(b)的混合物。