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143 条记录 (耗时 0.014 秒)

    Process for the manufacture of condensation products suitable as hardeners for epoxide resins
    1.
    发明授权
    Process for the manufacture of condensation products suitable as hardeners for epoxide resins 失效
    用于制造适用于环氧树脂硬化剂的冷凝产品的方法

    公开(公告)号：US3844971A

    公开(公告)日：1974-10-29

    申请号：US25328572

    申请日：1972-05-15

    申请人： INVENTA AG

    发明人： EL GHATTA H ,  HOPPE M ,  LUSSI H ,  BERTHER C

    IPC分类号： C08G69/26 ,  C08L63/00 ,  C08G51/84

    CPC分类号： C08G69/26 ,  C08L63/00 ,  C08L77/00

    摘要： Byproducts of the oxidation of cycloalkanes, which react with primary and secondary amines, are condensed with polyvalent aliphatic amines. The condensation products are inexpensive and are suitable as epoxide resin hardners. The condensation products generally contain in chemically bound form about 50 percent or more of said byproducts. Resins hardened with the hardeners of the present invention surprisingly show increased impact strength.

    摘要翻译： 与伯胺和仲胺反应的环烷烃氧化的副产物与多价脂族胺缩合。 缩合产物是廉价的并且适合作为环氧树脂硬化剂。 缩合产物通常以化学结合形式含有约50％或更多的所述副产物。 用本发明的硬化剂硬化的树脂令人惊讶地显示出增加的冲击强度。

    Process for the purification of caprolactam
    2.
    发明授权
    Process for the purification of caprolactam 失效
    过氧化氢清除方法

    公开(公告)号：US3839324A

    公开(公告)日：1974-10-01

    申请号：US20556671

    申请日：1971-12-07

    申请人： INVENTA AG

    发明人： SCHULTZE H ,  HENN R ,  BERTHER C

    IPC分类号： C07D201/16 ,  C07D41/06

    CPC分类号： C07D201/16

    摘要： A continuous process for the purification of caprolactam characterized in that raw caprolactam is subjected to a solvent distillation followed by a distillation under reduced pressure in the presence of sodium hydroxide and then to a melt crystallization, in which: A. The residue from the alkaline distillation is taken up in water, the aqueous solution extracted with benzene or toluene and the lactam solution fed to the main product stream through the solvent distillation; B. The residue from the melt crystallization is extracted in the crystalline state with an aliphatic or cycloaliphatic hydrocarbon with 5-10 carbon atoms and the purified residue is fed back into the alkaline distillation of the main produce stream; and C. The aliphatic or cycloaliphatic hydrocarbon is regenerated and used again for the extraction of the residue from the meltcrystallization.

    摘要翻译： 用于纯化己内酰胺的连续方法，其特征在于将原己内酰胺进行溶剂蒸馏，然后在氢氧化钠存在下减压蒸馏，然后进行熔融结晶，其中：

    Process for the manufacture of polythiobisphenols
    3.
    发明授权
    Process for the manufacture of polythiobisphenols 失效
    制备多羟基苯酚的方法

    公开(公告)号：US3812192A

    公开(公告)日：1974-05-21

    申请号：US25330472

    申请日：1972-05-15

    申请人： INVENTA AG

    发明人： GABLER R ,  STUDINKA J

    IPC分类号： A01N41/12 ,  C08J3/24 ,  C08K5/375 ,  C08L21/00 ,  C07C149/18

    CPC分类号： C08K5/375 ,  C07C323/00

    摘要： A PHENOL WHICH IS UNSUBSTITUTED AT THE POSITION PARA TO THE HYDROXY GROUP OR UNSUBSTITUTED AT AT LEAST ONE OF THE POSITIONS ORTHO TO THE HYDROXY GROUP IS DISSOLVED IN A SOLVENT, IN THE ABSENCE OF HYDROGEN SULFIDE AND CATALYSTS, AND WHILE COOLING TO A TEMPERATURE BELOW 30* C. IS REACTED WITH DISULFUR DICHLORIDE. THE SOLVENT IS AN ACID AMIDE WHOSE NITROGEN ATOMS ARE COMPLETELY ALKYLATED. POLYTHIOBISPHENOLS ARE OBTAINED IN HIGH YIELD.

    Polyether and polythioether formation in lactam solvents
    4.
    发明授权
    Polyether and polythioether formation in lactam solvents 失效
    LACTAM溶剂中的聚醚和聚氧乙烯形成

    公开(公告)号：US3809682A

    公开(公告)日：1974-05-07

    申请号：US24308372

    申请日：1972-04-11

    申请人： INVENTA AG

    发明人： STUDINKA J ,  GABLER R

    IPC分类号： C08G75/04 ,  C08G75/23 ,  C08G23/00 ,  C08G25/00

    CPC分类号： C08G75/23 ,  C08G75/025 ,  C08G75/04 ,  C08G75/12

    摘要： POLYMERIC COMPOUNDS OF THE FORMULA -X1-AR1-(Y1-AR1)N1-X2-(AR2-Y2)N2-AR2WHEREIN X1 AND X2 ARE INDEPENDENTLY EITHER OXYGEN OR SULPHUR, AR1 AND AR2 ARE THE SAME OR DIFFERENT AROMATIC RADICALS,N1 AND N2 ARE INDEPENDENTLY OF ONE ANOTHER THE NUMBERS 0-2, AND Y1 AND Y2 ARE INDEPENDENTLY OF ONE ANOTHER A SIMPLE BOND OR A DIVALENT RADICALS, PARTICULARLY ONE OF THE SERIES -O-, -CONH-, -S-, -SO2-, -CO-, -CH2-, -C(CH3)2-, -N=N-, IN WHICH EACH AR IS ATTACHED TO ADJCENT RING MEMBER BY TWO CARBON ATOMS WHICH ARE NOT ADJACENT ONE ANOTHER, AND IS CHARACTERIZED IN THAT AT LEAST ONE COMPOUND OF THE FORMULA: H-X1-AR1-(Y1-AR1)N1-X2-H IS TREATED WITH AT LEAST ONE COMPOUND OF THE FORMULLA: HAL-(AR2-Y2)N2-AR2-HAL IN WHICH HAL REPRESENTS HALOGEN, PARTICULARLY CHLORINE OR BROMINE, AND X1, X2 AND AR1, AR2, N1, N2, Y1 AND Y2 HAVE THE SIGNIFICANCE STATED IN FORMULA I, IN THE PRESENCE OF THE QUANTITY NECESSARY FOR NEUTRALIZATION OF HYDROGEN-HALIDE IN PARTICULAR 1-20% BY WEIGHT EXCESS CALCULATED ON THE STARTING MATERIAL OF AN INORGANIC OR ORGANIC BASE AS ACID ACCEPTOR, IN A SOLVENT OF THE FORMULA: A-N

    Apparatus for separating crystals from a melt
    7.
    发明授权
    Apparatus for separating crystals from a melt 失效
    用于从熔体分离晶体的装置

    公开(公告)号：US3705682A

    公开(公告)日：1972-12-12

    申请号：US3705682D

    申请日：1970-04-07

    申请人： INVENTA AG

    发明人： SCHULTZE HANS-JOACHIM

    IPC分类号： B04B11/02 ,  B04B15/02

    CPC分类号： B04B11/02 ,  B04B15/02

    摘要： Method and apparatus for purifying organic substances which form crystals and melt without decomposition by use of centrifuge which includes heating of the discharge channels above the melting point of the substance to prevent crust formation.

    摘要翻译： 用于净化有机物质的方法和装置，其通过使用离心机而形成晶体并熔化而不分解，其包括将物质的熔点加热到排出通道以防止外壳形成。