申请人:Asahi Kasei Kogyo Kabushiki Kaisha
公开号:EP0177793A2
公开(公告)日:1986-04-16
A process for preparing polyamides which comprises polycondensing dicarboxylic acids having the following general formula and diamines by using carbodiimides as the condensing agent.
wherein X is a group having a valence of (m+2), and C6-20 carboxylic group, C3-20 heterocyclic group, C2-20 alkyl group, or C2-20 alkenyl group, the group having at least one carbon-carbon double bond in the position of conjugating to carboxylic acid radical or the group having an α,β-unsaturated ketone structure;
Y is-OR or-NRR' wherein R and R' each independently is C5-20 carbocyclic group, C1-20 heterocyclic group, C1-20 alkyl group or substituted group thereof having at least one substituent selected from the group consisting of -OW (wherein W is C1-12 alkyl group), C2-12 saturated acyl group, C2-12 saturated acyloxy group, C2-12 saturated acylamino group, C2-12 dialkylamino group, -SW (wherein W is the same as defined above), C2-12 saturated acylthio group and C3-12 group having at least one silicon atom;
m is 0, 1 or 2; and
-COY can be attached to any of the positions ortho, peri, and y with respect to the -COOH group.
一种制备聚酰胺的工艺,包括以碳化二亚胺为缩合剂,将通式如下的二羧酸与二胺缩合。
其中 X 是价数为 (m+2) 的基团、C6-20 羧基、C3-20 杂环基、C2-20 烷基或 C2-20 烯基,该基团在与羧酸基共轭的位置上至少有一个碳碳双键,或该基团具有 α、β-不饱和酮结构;
Y 是-OR 或-NRR',其中 R 和 R'各自独立地为 C5-20 碳环基团、C1-20 杂环基团、C1-20 烷基或其取代基团,该取代基团具有至少一个选自以下组别的取代基-OW(其中 W 为 C1-12 烷基)、C2-12饱和酰基、C2-12饱和酰氧基、C2-12饱和酰氨基、C2-12二烷基氨基、-SW(其中W与上述定义相同)、C2-12饱和酰硫基和至少有一个硅原子的C3-12基团;
m 是 0、1 或 2;以及
-COY可连接到相对于-COOH基团的任何正、周和y位置上。