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
    • 83. 发明授权
    • Polyurethane foams and elastomers based on modified polyether polyols
    • 基于改性聚醚多元醇的聚氨酯泡沫和弹性体
    • US4230823A
    • 1980-10-28
    • US65307
    • 1979-08-09
    • Heinrich AlbertsGerhard Balle
    • Heinrich AlbertsGerhard Balle
    • C08F283/00C08F283/06C08G18/00C08G18/63C08G18/14C08G18/50C08K5/06
    • C08F283/06C08G18/632
    • The instant invention is directed to a process for the preparation of modified polyether polyols comprising polymerizing of from 1 to 50 parts by weight of a mixture of 20 to 100% by weight (based on the total quantity of monomers) of acrylonitrile and 0 to 80% by weight of styrene in 50 to 99 parts by weight of the polyether polyol in the presence of a polymerization initiator which yields radicals, wherein said polymerization is carried out in the presence of from 0.1 to 1.5% by weight, based on the total quantity of monomers put into the process, of a compound of the formula:A=CH--X--RwhereinA represents a divalent group ##STR1## R represents a C.sub.1-18 alkyl, C.sub.1-10 cycloalkyl, or substituted or unsubstituted benzyl group, R' represents C.sub.1-8 alkyl group,n represents 0, 1 or 2 andX represents oxygen or sulfur.
    • 本发明涉及一种制备改性聚醚多元醇的方法,其包括将1-50重量份的20至100重量%(基于单体总量)的丙烯腈和0至80重量份的混合物聚合 在产生自由基的聚合引发剂的存在下,在50至99重量份的聚醚多元醇中,苯乙烯的重量%,其中所述聚合在基于总量的0.1至1.5重量%的存在下进行 的下式化合物:A = CH-XR其中A表示二价基团R表示C1-18烷基,C1-10环烷基或取代或未取代的苄基,R' 表示C 1-8烷基,n表示0,1或2,X表示氧或硫。