首页> 外国专利> PREPARATION OF POLYURETHANE ELASTOMER HAVING LOW DYNAMIC HEAT GENERATION

PREPARATION OF POLYURETHANE ELASTOMER HAVING LOW DYNAMIC HEAT GENERATION

机译:具有低动态生热度的聚氨酯弹性体的制备

摘要

PURPOSE:To prepare the titled elastomer having low dynamic heat generation, excellent dimensional stability, and low thermal deterioration tendency, by reacting a specific urethane prepolymer having terminal NCO group with a specific polyol in a manner to give a specific crosslink density. CONSTITUTION:The objective elastomer is prepared by reacting (A) a urethane prepolymer having terminal NCO group and obtained by reacting (a) W1pts.wt. of a polyol having a molecular weight (MW1) of =500 and an (average) OH number (F1) of =2 (e.g. polytetramethylene glycol) with (b) W2pts.wt. of an organic polyisocyanate having an (average) NCO number (F2) of =2 and a molecular weight of MW2 (e.g. tolylene diisocyanate) with (B) W3pts.wt. of a polyol having a moleculr weight (MW3) of =5,000 and an (average) OH number (F3) of =2.2 (e.g. polyoxypropylenetriol). The reaction conditions are selected to give the elastomer having a crosslink density (CD) of =0.085 as defined by the formula.
机译:目的:通过使具有末端NCO基团的特定氨基甲酸酯预聚物与特定多元醇以赋予特定交联密度的方式反应,以制备具有低动态热,优异的尺寸稳定性和较低的热劣化趋势的标题弹性体。组成:目标弹性体是通过使(A)具有末端NCO基团的氨基甲酸酯预聚物与(a)W1pts.wt反应制得的。分子量(MW1)≥500且(平均)OH值(F1)≥2的多元醇(例如聚丁二醇)的含量为(b)W2pts.wt。 NCO数(F2)(平均)> = 2且分子量为MW2(例如甲苯二异氰酸酯)的有机多异氰酸酯的分子量为(B)W3pts.wt。分子量(MW 3)≤5,000且(平均)OH值(F 3)≥2.2的多元醇(例如聚氧丙烯三醇)。选择反应条件以得到具有由式所定义的> = 0.085的交联密度(CD)的弹性体。

著录项

  • 公开/公告号JPS59108022A

    专利类型

  • 公开/公告日1984-06-22

    原文格式PDF

  • 申请/专利权人 DAIICHI KOGYO SEIYAKU KK;

    申请/专利号JP19820217266

  • 发明设计人 SANO TAKASHI;MAKI HIROHISA;

    申请日1982-12-10

  • 分类号C08G18/00;C08G18/10;

  • 国家 JP

  • 入库时间 2022-08-22 09:45:26

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