公开(公告)号：AT384753T

公开(公告)日：2008-02-15

申请号：AT05744275

申请日：2005-04-21

Applicant: BASF AG

Inventor： OSTROWSKI THOMAS ,  RUPPEL RAIMUND ,  HOEPPNER GERD ,  BERGMANN SASCHA ,  VANDEWALLE KOEN ,  BAUM EVA

IPC: C08G65/26 ,  C08G18/48

Abstract: Process for preparing polyether polyols having an end block of ethylene oxide by addition of alkylene oxides onto H-functional starter substances, in which A) a polyether polyol precursor is prepared by means of double metal cyanide (DMC) catalysis in a semicontinuous mode of operation in which previously prepared polyether polyol together with the DMC catalyst are placed in a reactor and H-functional starter substance and propylene oxide are added continuously, B) the polyether polyol precursor from stage A) is reacted with propylene oxide or an ethylene oxide/propylene oxide mixture in the presence of the DMC catalyst in a continuously operating reactor to give a polyether polyol intermediate, C) the intermediate from stage B) is mixed with an alkali metal hydroxide as catalyst and D) reacted with ethylene oxide in a continuously operating reactor to give the final product, E) the catalyst is separated off from the final product obtained in stage D).

公开(公告)号：DE602005004539D1

公开(公告)日：2008-03-13

申请号：DE602005004539

申请日：2005-04-21

Applicant: BASF AG

Inventor： OSTROWSKI THOMAS ,  RUPPEL RAIMUND ,  HOEPPNER GERD ,  BERGMANN SASCHA ,  VANDEWALLE KOEN ,  BAUM EVA

IPC: C08G65/26 ,  C08G18/48

Abstract: Process for preparing polyether polyols having an end block of ethylene oxide by addition of alkylene oxides onto H-functional starter substances, in which A) a polyether polyol precursor is prepared by means of double metal cyanide (DMC) catalysis in a semicontinuous mode of operation in which previously prepared polyether polyol together with the DMC catalyst are placed in a reactor and H-functional starter substance and propylene oxide are added continuously, B) the polyether polyol precursor from stage A) is reacted with propylene oxide or an ethylene oxide/propylene oxide mixture in the presence of the DMC catalyst in a continuously operating reactor to give a polyether polyol intermediate, C) the intermediate from stage B) is mixed with an alkali metal hydroxide as catalyst and D) reacted with ethylene oxide in a continuously operating reactor to give the final product, E) the catalyst is separated off from the final product obtained in stage D).

公开(公告)号：MXPA06011930A

公开(公告)日：2007-01-26

申请号：MXPA06011930

申请日：2005-04-21

Applicant: BASF AG

Inventor： OSTROWSKI THOMAS ,  HOEPPNER GERD ,  RUPPEL RAIMUND ,  BAUM EVA ,  BERGMANN SASCHA ,  VANDERWALLE KOENRAAD

IPC: C08G65/26 ,  C08G18/48

Abstract: Se presenta un proceso para la preparacion de polieter polioles que tienen un bloque de extremo de oxido de etileno mediante adicion de oxidos de alquileno en sustancias iniciadoras con funcionalidad H, en donde A) se prepara un precursor de polieter poliol a traves de catalisis de cianuro de metal doble (DMC, por sus siglas en ingles), en un modo semi-continuo de operacion en el cual el polieter poliol previamente preparado junto con el catalizador DMC se colocan en un reactor y una sustancia iniciadora con funcionalidad H y oxido de propileno se agregan continuamente; B) el precursor de polieter poliol de la etapa A) reacciona con oxido de propileno o una mezcla de oxido de etileno /oxido de propileno en presencia del catalizador DMC en un reactor de operacion continua para proporcionar un producto intermedio de polieter poliol; C) el producto intermedio de la etapa B) se mezcla con un hidroxido de metal alcalino como catalizador y D) reacciona con oxido de etileno en un reactor de operacion continua para proporcionar el producto final; E) el catalizador es separado del producto final obtenido en la etapa D).