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公开(公告)号：US3865814A
公开(公告)日：1975-02-11
申请号：US38246173
申请日：1973-07-25
Applicant: INVENTA AG
Inventor： LUSSI HEINZ , BERTHER CLAU , STUDINKA JOSEF
IPC: C07D223/10 , C07D207/26 , C07D207/267 , C07D211/76 , C07D225/02 , C07D227/087 , C07D41/06
CPC classification number: C07D207/267 , C07D227/087
Abstract: A process for the preparation of N-substituted lactams of the formula
WHEREIN A is a substituted or unsubstituted aliphatic hydrocarbon chain having 3 to 11 carbon atoms, said substituents comprising one or more alkyl groups each having 1 to 4 carbon atoms; and R is hydrogen or a hydrocarbon radical having 1 to 17 carbon atoms, comprising reacting at least one starting lactam of the formula
WITH AN ORGANIC HALOGEN COMPOUND OF THE FORMULA X - CH2-R wherein X is chlorine, bromine or iodine, in the presence of an alkali metal hydroxide in solid form or in at least 50% aqueous solution at a reaction temperature of from 20*C to 120*C.Abstract translation: 制备式（III）的N-取代的内酰胺的方法是取代或未取代的具有3至11个碳原子的脂族烃链，所述取代基包括一个或多个各自具有1至4个碳原子的烷基; 并且R是氢或具有1至17个碳原子的烃基，其包括使式的至少一种起始内酰胺与式X-CH 2 -R的有机卤素化合物反应，其中X为氯，溴或碘， 的固体形式的碱金属氢氧化物或在20℃至120℃的反应温度下的至少50％的水溶液中。
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Patent Agency Ranking2.发明授权Method of regulating the polymerization rate in the anionic polymerization of lactams 失效调节聚合物在聚合物聚合中的聚合速率的方法
公开(公告)号：US3637608A
公开(公告)日：1972-01-25
申请号：US3637608D
申请日：1969-09-25
Applicant: INVENTA AG
Inventor： SCHAAF SIEGFRIED , BERTHER CLAU
Abstract: THE METHOD RELATES TO THE POLYMERIZATION OF LACTAMS HAVING MORE THAN 6 MEMBER RINGS, AT A TEMPERATURE IN THE RANGE OF 130-180*C. AN ALKALINE POLYMERIZATION CATALYST AND A MIXTURE OF COCATALYSTS IS EMPLOYED IN THE POLYMERIZATION REACTION. THE COCATALYST MIXTURE CONSISTS OF FROM 30-70% OF A HIGH-ACTIVITY COCATALYST COMPRISING ACETYLLACTAMS, ACID CHLORIDES, ACID ANHYDRIDES, CYANAMIDES, ISOCYANATES, KETENES, AND OXAZOLIDINEDIONE DERIVATIVES, AND THE BALANCE CONSISTING OF POLYCARBODIMIDES.
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3.发明授权Process for the simultaneous production of epsilon-caprolactam and omega-dodecalactam 失效同时生产EPSILON-CAPROLACTAM和OMEGA-DODECALACTAM的方法
公开(公告)号：US3470153A
公开(公告)日：1969-09-30
申请号：US3470153D
申请日：1966-11-03
Applicant: INVENTA AG
Inventor： SCHULTZE HANS-JOACHIM , ZBINDEN WALTER , GRISONS TAMINS , BERTHER CLAU
IPC: C07D201/04 , C07D41/06 , C07D41/00
CPC classification number: C07D201/04
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4.发明授权Process for the manufacture of omega-decalactam using epsilon-caprolactam as a solvent therefor 失效使用EPSILON-CAPROLACTAM作为其溶剂制备欧米加 - 分解乳的方法
公开(公告)号：US3544562A
公开(公告)日：1970-12-01
申请号：US3544562D
申请日：1967-06-29
Applicant: INVENTA AG
Inventor： SCHULTZE HANS-JOACHIM , BERTHER CLAU
IPC: C07D201/04 , C07D41/06
CPC classification number: C07D201/04
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5.发明授权Apparatus for continuously separating mixtures of substances by multistage rectifying column crystallization 失效用于连续分离物质混合物的装置通过多级整流柱结晶
公开(公告)号：US3501275A
公开(公告)日：1970-03-17
申请号：US3501275D
申请日：1968-05-27
Applicant: INVENTA AG
Inventor： SAILER RICHARD , PHILIPP HANSWERNER , BERTHER CLAU
CPC classification number: C07D201/16 , B01D9/0013 , B01D9/004 , B01D9/005 , C07C37/74 , C07C37/84 , C07C39/04
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公开(公告)号：US3476744A
公开(公告)日：1969-11-04
申请号：US3476744D
申请日：1966-06-07
Applicant: INVENTA AG
Inventor： BERTHER CLAU , SAILER RICHARD
IPC: B01D9/00 , B01D11/04 , C07D201/16 , C07D41/00 , C07D41/06
CPC classification number: C07D201/16 , B01D9/0036 , B01D9/0059 , B01D11/0488
Abstract: Lactams are purified by forming a melt of crude lactam and adding to it sufficiently finely divided solid crude lactam to make a mixture in which the melt forms 50-90% by weight, maintaining the mixture in an adiabatic state and, after melting equilibrium is reached, separating crystals of purified lactam from the mixture. The process is particularly suitable for the purification of lactams having 7-13 ring members. The crude lactam may be subjected to a preliminary treatment with potassium permanganate prior to purification.
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