申请人:POLYPLASTICS CO. LTD.
公开号:EP1094085A2
公开(公告)日:2001-04-25
The invention provides a method for producing a thermotropic liquid crystalline polymer of high quality at high yield, which method includes polymerizing staring monomers I, II, III, and IV, i.e., (I) an aromatic hydroxycarboxylic acid, etc; (II) an aromatic dicarboxylic acid and an alicyclic dicarboxylic acid; (III) an aromatic diol, an alicyclic diol, an aliphatic diol, etc; and (IV) an aromatic hydroxylamine, an aromatic diamine, etc in the presence of an acylating agent, wherein the starting materials are charged so as to satisfy the following equations (1) to (4):(1);0.0015 ≤ ((A) - (B))/((A) + (B)) ≤ 0.006(2);1.01 ≤ (D)/(C) ≤ 1.08(3);0 ≤ (E) ≤ 40 and(D)/(C)≥ -0.002× (E) + 1.04 wherein
(A) denotes the total amount by equivalent (with respect to a carboxyl group) of starting monomers I and/or II; (B) denotes the total amount by equivalent (with respect to a hydroxyl group, an amino group, an ester derivative group thereof, and an amide derivative group thereof) of starting monomers I, III, and/or IV; (C) denotes the total amount by equivalent (with respect to a hydroxyl group and an amino group) of starting monomers I, III, and/or IV; (D) denotes the amount by equivalent of an acylating agent; and (E) denotes the amount of a catalyst (as reduced to amount by weight of metal, unit: ppm).
本发明提供了一种生产高质量、高收率的热致性液晶聚合物的方法,该方法包括聚合盯单体I、II、III和IV,即、(I)芳香族羟基羧酸等;(II)芳香族二羧酸和脂环族二羧酸;(III)芳香族二元醇、脂环族二元醇、脂肪族二元醇等;以及 (IV)芳香族羟胺、芳香族二胺等,在酰化剂存在下,其中起始原料的加料满足下式(1)至(4):(1);0.0015 ≤ ((A) - (B))/((A) + (B)) ≤ 0.006(2);1.01 ≤ (D)/(C) ≤ 1.08(3);0 ≤ (E) ≤ 40 且(D)/(C)≥ -0.002× (E) + 1.04 其中
(A) 表示起始单体 I 和/或 II 的当量总量(关于羧基); (B) 表示起始单体 I、III 和/或 IV 的当量总量(关于羟基、氨基、酯衍生物基团和酰胺衍生物基团);(C) 表示起始单体 I、III 和/或 IV 的当量总量(关于羟基和氨基); (D) 表示酰化剂的当量量;以及 (E) 表示催化剂的用量(还原为按重量计的金属量,单位:ppm):ppm)。