会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 36. 发明授权
    • Solution polymerization of high molecular weight poly(phosphoesters) in
toluene
    • 高分子量聚(磷酸酯)在甲苯中的溶液聚合
    • US6028163A
    • 2000-02-22
    • US884382
    • 1997-06-27
    • Zhong Zhao
    • Zhong Zhao
    • C08G79/04C08G69/26
    • C08G79/04
    • A process for making a high molecular weight poly(phosphoester) comprising the recurring monomeric units: ##STR1## wherein X is --O-- or --NR"--, where R" is H or alkyl; L is a divalent organic moiety, with the proviso that L cannot have the formula ##STR2## R' is H, alkyl, alkoxy, aryl, aryloxy, heterocyclic, or heterocycloxy; and n is from about 25 to 2000,is described. The process comprises the steps of:(a) substantially dissolving p moles of a di-XH compound in a solvent comprising more than 75% toluene at a first temperature between about -75.degree. C. and 60.degree. C. to form a reaction mixture;(b) while maintaining the reaction mixture at the first temperature, adding q moles, where p.apprxeq.q, of a phosphorodihalo compound;(c) gradually increasing said first temperature at a rate of less than about 2.degree. C. per minute as necessary to achieve a second temperature between about 0.degree. C. and 110.degree. C., and mixing the reaction mixture at the second temperature to form the polymer of formula I; and(d) isolating the polymer of formula I.
    • 制备包含重复单体单元的高分子量聚(磷酸酯)的方法:其中X是-O-或-NR“ - ,其中R”是H或烷基; L是二价有机部分,条件是L不能具有式R'是H,烷基,烷氧基,芳基,芳氧基,杂环或杂环氧基; 并且n为约25〜2000。 该方法包括以下步骤:(a)在约-75℃至60℃之间的第一温度下,将p摩尔的二-XH化合物基本上溶解在包含大于75%的甲苯的溶剂中以形成反应混合物 ; (b)在将反应混合物保持在第一温度的同时,加入q摩尔,其中p APPROX q为二卤代化合物; (c)根据需要以小于约2℃/分钟的速率逐渐增加所述第一温度以达到约0℃至110℃之间的第二温度,并将反应混合物在第二温度下混合至 形成式I的聚合物; 和(d)分离式I的聚合物。