专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明专利

DE102006004041A1 未知
公开(公告)号：DE102006004041A1
公开(公告)日：2007-08-02
申请号：DE102006004041
申请日：2006-01-28
申请人： BAYER MATERIALSCIENCE AG
发明人： KEGGENHOFF BERTHOLD , ADAMSON RICHARD , UCHDORF RUDOLF , POHL FRITZ
IPC分类号： C07C209/60 , C07C209/82 , C07C211/27 , C07C263/10 , C07C265/14
摘要： Preparation of di- and polyamine of the diphenylmethane series comprises transferring aniline and formaldehyde to a reaction mixture containing di- and polyamine, in the presence of an acid catalyst, neutralizing the reaction mixture containing di- and polyamine, introducing the neutralized reaction mixture containing di- and polyamine into an organic phase containing di- and polyamine and an aqueous phase, distillatively separating water and aniline form the organic phase, and cooling the obtained di- and polyamine. Preparation of di- and polyamine of the diphenylmethane series comprises: (a) transferring aniline and formaldehyde to a reaction mixture containing di- and polyamine, in the presence of an acid catalyst, (b) neutralizing the reaction mixture containing di- and polyamine, (c) introducing the neutralized reaction mixture containing di- and polyamine into an organic phase containing di- and polyamine and an aqueous phase, (d) distillatively separating water and aniline form the organic phase, where the distillation in step (d) comprises at least a pre-evaporation step and at least a distillation step; in the pre-evaporation step aniline and water are partially separated from the organic phase containing di- and polyamine by open evaporation; the further aniline and water are removed in the subsequent distillation step and the obtained di- and polyamine contains less than 1000 ppm of water and less than 200 ppm of aniline, based on the weight of di- and polyamine, and (e) cooling the obtained di- and polyamine. An independent claim is included for the preparation of di- and polyisocyanate of the diphenylmethane series comprising preparing di- and polyamine and subsequently reacting the amine with a phosgene.

12. 发明专利

AT506341T 未知
公开(公告)号：AT506341T
公开(公告)日：2011-05-15
申请号：AT07000738
申请日：2007-01-16
申请人： BAYER MATERIALSCIENCE AG
发明人： KEGENHOFF BERTHOLD , ADAMSON RICHARD , UCHDORF RUDOLF , POHL FRITZ
IPC分类号： C07C209/78 , C07C209/84 , C07C263/10
摘要： Preparation of di- and polyamine of the diphenylmethane series comprises transferring aniline and formaldehyde to a reaction mixture containing di- and polyamine, in the presence of an acid catalyst, neutralizing the reaction mixture containing di- and polyamine, introducing the neutralized reaction mixture containing di- and polyamine into an organic phase containing di- and polyamine and an aqueous phase, distillatively separating water and aniline form the organic phase, and cooling the obtained di- and polyamine. Preparation of di- and polyamine of the diphenylmethane series comprises: (a) transferring aniline and formaldehyde to a reaction mixture containing di- and polyamine, in the presence of an acid catalyst, (b) neutralizing the reaction mixture containing di- and polyamine, (c) introducing the neutralized reaction mixture containing di- and polyamine into an organic phase containing di- and polyamine and an aqueous phase, (d) distillatively separating water and aniline form the organic phase, where the distillation in step (d) comprises at least a pre-evaporation step and at least a distillation step; in the pre-evaporation step aniline and water are partially separated from the organic phase containing di- and polyamine by open evaporation; the further aniline and water are removed in the subsequent distillation step and the obtained di- and polyamine contains less than 1000 ppm of water and less than 200 ppm of aniline, based on the weight of di- and polyamine, and (e) cooling the obtained di- and polyamine. An independent claim is included for the preparation of di- and polyisocyanate of the diphenylmethane series comprising preparing di- and polyamine and subsequently reacting the amine with a phosgene.

13. 发明专利

BRPI0700140A 未知
公开(公告)号：BRPI0700140A
公开(公告)日：2007-11-06
申请号：BRPI0700140
申请日：2007-01-29
申请人： BAYER MATERIALSCIENCE AG
发明人： POHL FRITZ , BOLTON JEFFREY , ADAMSON RICHARD , MUELLER HEINZ-HERBERT , UCHDORF RUDOLF
IPC分类号： C08G12/08 , C07C209/78
摘要： Preparation of di- and polyamines of diphenylmethane comprises reacting aniline (less than 3 wt.%) and formaldehyde in the presence of an acid catalyst.

14. 发明专利

DE102006004047A1 未知
公开(公告)号：DE102006004047A1
公开(公告)日：2007-08-02
申请号：DE102006004047
申请日：2006-01-28
申请人： BAYER MATERIALSCIENCE AG
发明人： POHL FRITZ , BOLTON JEFFREY , ADAMSON RICHARD , MUELLER HEINZ-HERBERT , UCHDORF RUDOLF
IPC分类号： C07C209/60 , C07C209/82 , C07C211/27
摘要： Preparation of di- and polyamines of diphenylmethane comprises reacting aniline (less than 3 wt.%) and formaldehyde in the presence of an acid catalyst.

15. 发明专利

ES2253594T3 PROCEDIMIENTO PARA LA PREPARACION DE POLIISOCIANATOS DE LA SERIE DEL DIFENILMETANO CON VALOR CROMATICO REDUCIDO. 未知
公开(公告)号：ES2253594T3
公开(公告)日：2006-06-01
申请号：ES03004365
申请日：2003-03-03
申请人： BAYER MATERIALSCIENCE AG
发明人： HAGEN TORSTEN DR , KAMPER FRIEDHELM DR , KOCH DANIEL DR , UCHDORF RUDOLF , WERSHOFEN STEFAN DR
IPC分类号： C07B61/00 , C07C209/78 , C07C211/50 , C07C263/10 , C07C265/14 , C08G18/76
摘要： Procedimiento para la preparación de poliaminas de la serie del difenilmetano en el que a) anilina y formaldehído se hacen reaccionar en presencia de un catalizador ácido para dar poliaminas y después b) la mezcla de reacción se neutraliza con una base, después de la neutralización se separan las fases acuosa y orgánica y se añade una base a la fase orgánica.

16. 发明专利

DE50301828D1 未知
公开(公告)号：DE50301828D1
公开(公告)日：2006-01-12
申请号：DE50301828
申请日：2003-03-03
申请人： BAYER MATERIALSCIENCE AG
发明人： HAGEN DR , KAEMPER DR , KOCH DR , UCHDORF RUDOLF , WERSHOFEN DR
IPC分类号： C07B61/00 , C07C209/78 , C07C211/50 , C07C263/10 , C07C265/14 , C08G18/76
摘要： A method (M1) for the production of polyamines of the diphenylmethane series (I) involves: (a) reaction of aniline and formaldehyde in presence of an acid catalyst to form polyamines; and (b) neutralization of the reaction mixture with base, followed by phase separation and treatment of the organic phase with a base. An Independent claim is also included for a method (M2) for the production of polyisocyanates of the diphenylmethane series (II) by carrying out method M1 as above and then reacting the polyamines obtained with phosgene.

17. 发明专利

ES2364428T3 PROCEDIMIENTO PARA LA PREPARACION DE DI- Y POLIAMINAS DEL GRUPO DE DIFENILMETANO. 未知
公开(公告)号：ES2364428T3
公开(公告)日：2011-09-02
申请号：ES07000738
申请日：2007-01-16
申请人： BAYER MATERIALSCIENCE AG
发明人： KEGENHOFF BERTHOLD , ADAMSON RICHARD , UCHDORF RUDOLF , POHL FRITZ
IPC分类号： C07C209/78 , C07C209/84 , C07C263/10
摘要： Procedimiento para la preparación de di- y poliaminas del grupo del difenilmetano, en el que a) se hace reaccionar anilina y formaldehído en presencia de un catalizador ácido dando una mezcla de reacción que contiene di- y poliaminas, y b) se neutraliza la mezcla de reacción que contiene di- y poliaminas, y c) se separa la mezcla de reacción neutralizada que contiene di- y poliaminas en una fase orgánica que contiene di- y poliaminas y una fase acuosa, y d) se separan de la fase orgánica que contiene di- y poliaminas por destilación agua y anilina. caracterizado porque d1) la destilación en la etapa d) comprende al menos una etapa de concentración preliminar y al menos una etapa de destilación subsiguiente, y d2) se separan parcialmente en la etapa de concentración preliminar de la fase orgánica que contiene di- y poliaminas mediante evaporación súbita anilina y agua, y d3) se separan en la etapa de destilación subsiguiente la anilina y agua aún contenidas, obteniéndose di- y poliaminas que contienen menos de 1000 ppm de agua y menos de 200 ppm de anilina, referido al peso de las di- y poliaminas, y e) se enfrían a continuación las di- y poliaminas que contienen menos de 1000 ppm de agua y menos de 200 ppm de anilina.

18. 发明专利

DE502007006970D1 Verfahren zur Herstellung von Di- und Polyaminen der Diphenylmethanreihe 未知
公开(公告)号：DE502007006970D1
公开(公告)日：2011-06-01
申请号：DE502007006970
申请日：2007-01-16
申请人： BAYER MATERIALSCIENCE AG
发明人： KEGENHOFF BERTHOLD DR , ADAMSON RICHARD , UCHDORF RUDOLF , POHL FRITZ DR
IPC分类号： C07C209/78 , C07C209/84 , C07C263/10

19. 发明专利

BRPI0502734A 未知
公开(公告)号：BRPI0502734A
公开(公告)日：2007-02-27
申请号：BRPI0502734
申请日：2005-07-04
申请人： BAYER MATERIALSCIENCE AG
发明人： HAGEN TORSTEN , KOCH DANIEL , PIRKL HANS-GEORGE , POHL FRITZ , WERSHOFEN STEFAN , UCHDORF RUDOLF , ADAMSON RICHARD
IPC分类号： C07C211/54 , C07C209/78 , C07C265/12 , C07C263/00 , C08G12/08
摘要： Method for acid catalyzed preparation of polyamine of diphenylmethane series comprises reacting aniline and formaldehyde and adjusting a water content in the acid reaction mixture to less than 20 wt.% and a protonation degree of less than 15%; and increasing the temperature of the reaction to 110-250[deg]C, when the weight ratio of p-aminobenzylaniline to 4,4'-diphenylmethane diisocyanate in the acid reaction mixture is less than 1. Method for acid catalyzed preparation of polyamine of diphenylmethane series comprises reacting aniline and formaldehyde with a molar ratio of 1.5:1-6:1 at 20-100[deg]C, where adjusting a water content in the acid reaction mixture to less than 20 wt.% and a protonation degree of less than 15%; and increasing the temperature of the reaction to 110-250[deg]C, when the weight ratio of p-aminobenzylaniline to 4,4'-diphenylmethane diisocyanate in the acid reaction mixture is less than 1. Independent claims are also included for: (1) the preparation of polyisocyanate of diphenylmethane series comprising producing polyamine of diphenylmethane series by the above method and subsequently phosgenising the polyamine; and (2) the preparation of polyurethane comprising producing polyisocyanate of diphenylmethane series by the above method and converting with polyetherpolyol and/or polyesterpolyol to polyurethane.

20. 发明专利

DE50108614D1 未知
公开(公告)号：DE50108614D1
公开(公告)日：2006-03-30
申请号：DE50108614
申请日：2001-02-01
申请人： BAYER MATERIALSCIENCE AG
发明人： KLEIN STEPHAN , GROTJOHANN DIRK , MENDOZA-FROHN CHRISTINE , KOCH DANIEL , MUELLER HEINZ-HERBERT , PIRKL HANS-GEORG , UCHDORF RUDOLF , WEGENER GERHARD
IPC分类号： C07C209/78 , C07B61/00 , C07C211/50 , C07C211/54
摘要： diaminophenyl methanes (I) are produced by rearrangement of a dried condensate of aniline (A) and a methylene group containing agent (B) in a molar ratio of (A):(B) of 1.7-100 in the presence of acid catalysts under conditions to form (I) having a low polymer content with a significant 4,4'-isomer content, whereby the aniline (A) is essentially free of aliphatic amines.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式