公开(公告)号：US3839440A

公开(公告)日：1974-10-01

申请号：US412570

申请日：1970-01-19

申请人： BAYER AG

发明人： ZECHER W ,  ROOS E ,  MERTEN R

IPC分类号： C07C275/28 ,  C07C275/30 ,  C07C275/34 ,  C08G18/38 ,  C07C127/16

CPC分类号： C08G18/3829 ,  C07C275/28 ,  C07C275/30 ,  C07C275/34 ,  C07C2601/16

摘要： 1. AN N,N''-SUBSTITUTED UREA OF THE FORMULA R3-NH-CO-N(-R'')-C

公开(公告)号：US3792061A

公开(公告)日：1974-02-12

申请号：US3792061D

申请日：1970-09-10

申请人： BAYER AG

发明人： MERTEN R ,  ZECHER W

IPC分类号： C07D207/40 ,  C07D207/404 ,  C07D207/452 ,  C07D209/48 ,  C07D487/04 ,  C08G73/00 ,  C08G73/14 ,  C07D27/52

CPC分类号： C07D207/404 ,  C07D209/48 ,  C07D487/04

摘要： PROCESS FOR THE PRODUCTION OF IMIDOCARBOXYLIC ACIDS BY REACTION OF A CYLCIC DICARBOXYLIC ANHYDRIDE AND A POLUAMIDE AT A TEMPERATURE OF FROM 20 TO 450*C. THE PRODUCTS OBTAINED ARE SUITABLE FOR THE PRODUCTION OF PLASTICIZERS AND LACQUERS.

公开(公告)号：US3712907A

公开(公告)日：1973-01-23

申请号：US3712907D

申请日：1969-05-07

申请人： BAYER AG

发明人： GILCH H ,  BOTTENBRUCH L ,  ZECHER W ,  MERTEN R

IPC分类号： C07D209/48 ,  C07D487/04 ,  C07D27/52

CPC分类号： C07D209/48 ,  C07D487/04

摘要： PROCESS FOR THE PRODUCTION OF SUBSTITUENTS PHTHALIMIDON-CARBOXYLIC ACIDS BY REACTION OF A LACTAM HAVING MORE THAN 3 RING MEMBERS WITH A PHTHALIC ACID ANHYDRIDE DERIVATIVES BEING SUBSTITUTED BY AN ELECTROPHALIC SUBSTITUTENT WHICH IS MORE ELECTRONEGATIVE THAN HYDROGEN.

公开(公告)号：US3781246A

公开(公告)日：1973-12-25

申请号：US3781246D

申请日：1971-12-03

申请人： BAYER AG

发明人： ZECHER W ,  MERTEN R

IPC分类号： C08G73/10 ,  C08G20/32

CPC分类号： C08G73/1003

摘要： A PROCESS FOR THE PRODUCTION OF POLYIMIDES BY REACTION OF SCHIFF''S BASES AND CYCLIC DICARBOXYLIC ACID ANHYDRIDES AT TEMPERATURES OF FROM 0 TO 450*C.

公开(公告)号：US3752791A

公开(公告)日：1973-08-14

申请号：US3752791D

申请日：1970-10-23

申请人： BAYER AG

发明人： ZECHER W ,  MERTEN R

IPC分类号： C08G18/00 ,  C08G18/34 ,  C08G18/60 ,  C08G73/00 ,  C08G73/14 ,  C08G20/38

CPC分类号： C08G18/603 ,  C08G18/34 ,  C08G73/14

摘要： THE INVENTION RELATES TO A PROCESS WHICH COMPRISES REACTING A POLYAMIDE WITH A POLYISOCYANATE HAVING AT LEAST TWO NCO GROUPS, OR A COMPOUND CAPABLE OF REACTING AS SUCH A POLYISOCYANATE UNDER THE REACTION CONDITIONS, AND A CYCLIC DICARBOXYLIC ACID ANHYDRIDE WHICH CONTAINS AT LEAST ONE ADDITIONAL GROUP CAPABLE OF CONDENSATION OR ADDITION, OR A COMPOUND CAPABLE OF FORMING SUCH AN ANHYDRIDE UNDER THE REACTION CONDITIONS, AT A TEMPERATURE OF FROM -20 TO +450*C. PREDOMINANTLY, HIGH MOLECULAR WEIGHT REACTION PRODUCTS, DISTINGUISHED BY THEIR OUTSTANDING SOLUBILITY, ARE OBTAINED.