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
    • 4. 发明授权
    • Cyclic aminals of aromatic heterocyclic compounds
    • 芳香杂环化合物的循环氨基酸
    • US4000152A
    • 1976-12-28
    • US420495
    • 1973-11-30
    • Jurgen HockerRudolf Merten
    • Jurgen HockerRudolf Merten
    • C07D233/58A01N43/50C07D233/02C07D233/54C07D49/34
    • C07D233/54C07D233/02
    • Cyclic aminals of aromatic heterocyclic compounds useful in the dyestuffs, pharmaceutical and pesticides industries, are prepared by reacting aromatic heterocyclic compounds containing at least one NH-group in a ring with a tetra-aminoethylene.The cyclic aminals produced have the formula ##STR1## wherein X.sup.5, X.sup.6, X.sup.7 and X.sup.8 are the same or different and areA. nitrogen; orB.X.sup.5 is C - R.sup.3 and/orX.sup.6 is C - R.sup.4 and/orX.sup.7 is C - R.sup.5 and/orX.sup.8 is C - R.sup.6,whereinR.sup.3, r.sup.4, r.sup.5 and R.sup.6 are the same or different and are selected from the group of hydrogen, optionally substituted aliphatic, aromatic, heterocyclic or araliphatic, and any other radical which does not react with tetra-aminoethylene; or two adjacent radicals together with the carbon atoms substituted thereby can form a fused ring; orC. the group (Z): ##STR2## wherein R.sup.1 and R.sup.2 are as defined in claim 1; andD. at least one of the radicals X.sup.5, X.sup.6, X.sup.7 and X.sup.8 in the group (Z); andE. when X.sup.7 is nitrogen or X.sup.7 and X.sup.8 together form a fuzed benzene ring, then only X.sup.5 and/or X.sup.6 can represent the group (Z).
    • 10. 发明授权
    • Polyparabanic acid derivatives and process therefor
    • 聚对ic酸衍生物及其制备方法
    • US4181789A
    • 1980-01-01
    • US944748
    • 1978-09-22
    • Henning GieseckeJurgen HockerRudolf Merten
    • Henning GieseckeJurgen HockerRudolf Merten
    • C08G18/00C08G18/30C08G18/38C08G73/06C07D263/04
    • C08G73/0677C08G18/3844C08G18/3874
    • A polyparabanic acid derivative having a recurrent structural unit of the formula ##STR1## wherein X is O or S; each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, when taken separately is hydrogen or an aliphatic, aromatic or aliphatic-aromatic group; R.sup.1 and R.sup.2 when taken together complete a cycloaliphatic ring and R.sup.3 and R.sup.4 when taken together complete a cycloaliphatic ring and each of R.sup.5, R.sup.6 and R.sup.7, which may be the same or different, is an aliphatic, aromatic or aliphatic-aromatic residue of an organic isocyanate after removal of at least one isocyanate group and method of producing same by reacting a compound of the formula ##STR2## with at least one organic isocyanate having at least two isocyanate groups at a temperature of from -20.degree. to 400.degree. C.
    • 具有式“IMAGE”的复发结构单元的聚对苯二甲酸衍生物,其中X为O或S; 当单独使用时,R 1,R 2,R 3和R 4各自可以相同或不同,是氢或脂族,芳族或脂族 - 芳族基团; 当R 1和R 2一起形成脂环族环时,R 3和R 4一起形成脂环族环时,可以相同或不同的R 5,R 6和R 7各自为脂族,芳族或脂族 - 芳族残基 在除去至少一种异氰酸酯基团后的有机异氰酸酯及其制备方法,其通过在-20℃至400℃的温度下使式“IMAGE”的化合物与至少一种具有至少两个异氰酸酯基团的有机异氰酸酯反应。