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
    • 1. 发明授权
    • Continuous, solvent-free process for making copolymers of maleic anhydride and C1−4 alkyl vinyl ether
    • 连续,无溶剂的马来酸酐和C 1-4烷基乙烯基醚共聚物的方法
    • US06451944B2
    • 2002-09-17
    • US09861044
    • 2001-05-18
    • Russell BissJeffrey CohenJohn ZamoraKrystyna PlochockaJeffrey A. Lynn
    • Russell BissJeffrey CohenJohn ZamoraKrystyna PlochockaJeffrey A. Lynn
    • C08F3402
    • C08F222/06C08F2/02C08F216/18Y02P20/582
    • A continuous, solvent-free process for obtaining solvent-free, fine white powders of high molecular weight alternating copolymers of maleic anhydride and a C1-C4 alkyl vinyl ether, without odor or taste, having the molecular structure (A—B)n, where A is maleic anhydride, B is an alkyl vinyl ether and n is an integer indicative of the molecular weight of the copolymer, which comprises feeding alkyl vinyl ether as reactant and solvent in excess over the desired 1:1 mole ratio of A:B in the copolymer, molten maleic anhydride and a free radical initiator, continuously at predetermined feeding rates into a reactor heated at a reaction temperature of about 50° to 100° C., charging the reactor and withdrawing reaction product, residual alkyl vinyl ether and initiator from the reactor at the same rate as the feed rate of reactants into the reactor simultaneously thereby maintaining a constant volume in the reactor, stripping residual alkyl vinyl ether from the reaction product, drying the copolymer obtained of any remaining traces of alkyl vinyl ether, and recycling recovered alkyl vinyl ether back into reactor as reactant and solvent.
    • 一种连续,无溶剂的方法,用于获得具有分子结构(AB)n的不含气味或味道的马来酸酐和C1-C4烷基乙烯基醚的高分子量交替共聚物的无溶剂的细白色粉末,其中A 是马来酸酐,B是烷基乙烯基醚,n是表示共聚物的分子量的整数,其包括将烷基乙烯基醚作为反应物和过量的丙烯进料到所需的1:1摩尔比的A:B中 共聚物,熔融马来酸酐和自由基引发剂,以预定的进料速率连续加入到在约50℃至100℃的反应温度下加热的反应器中,将反应器和残留的烷基乙烯基醚和引发剂从 反应器以与反应物进入反应器的进料速率相同的速率同时由此在反应器中保持恒定体积,从反应产物中汽提残余的烷基乙烯基醚,干燥该共聚物 获得任何剩余痕量的烷基乙烯基醚的聚合物,并将回收的烷基乙烯基醚回收到反应器中作为反应物和溶剂。