公开(公告)号：EP2771314A1

公开(公告)日：2014-09-03

申请号：EP12777924.7

申请日：2012-10-26

Applicant: BASF SE

Inventor： LESCHINSKI, Julia ,  MATTKE, Torsten ,  WATERS, Gerrit ,  STROEFER, Eckhard

IPC: C07C263/10

CPC classification number: C07C263/10 ,  C07C265/14

Abstract: The invention relates to a method for producing isocyanates and/or polyisocyanates by reacting the corresponding amines with phosgene, optionally in the presence of an inert medium, in a reactor (1), wherein a first reactant stream containing the amine is fed to the reactor (1) in liquid form and a second reactant stream containing the phosgene is fed to the reactor in gaseous form. The reactor is a centrifugal reactor (1), which has a packing (9) rotating about a central axis (7) in a housing (13), the first reactant stream and the second reactant stream being fed to the rotating packing (9) in such a manner that the reactant streams are mixed and transported outward by the centrifugal force in the rotating packing (9), wherein the phosgene reacts with the amine due to the mixing in the rotating packing (9) to form the corresponding isocyanate or polyisocyanate.

公开(公告)号：EP2734570A1

公开(公告)日：2014-05-28

申请号：EP12735146.8

申请日：2012-07-16

Applicant: BASF SE

Inventor： CHILEKAR, Vinit ,  BEY, Oliver ,  BRODHAGEN, Andreas ,  LÖFFLER, Achim ,  AHMADNIAN, Fatemeh ,  BÖHLING, Ralf ,  GROßMANN, Christoph ,  KAMMEL, Ulrich ,  ADELMANN, Ronald ,  OSTROWSKI, Thomas ,  JOSHI, Milind ,  WATERS, Gerrit ,  MECKELNBURG, Dirk

IPC: C08G65/00

CPC classification number: C08G65/2609 ,  C08G65/2696

Abstract: The invention relates to a process for a continuous production of polyetherols comprising the steps of reacting of an alcohol (3) with a starter (5) or an alkoxylated precursor to give a mixture comprising an alcoholate and water, removing the water from the mixture by distillation,if appropriate feeding the alcoholate into a bubble column (23), having an inclination of from 0 to 90 to the horizontal, the bubble column (23)being divided into at least two compartments (25), wherein the compartments (25) are divided from each other by a dividing wall (27), the dividing wall (27) having a height, that liquid can flow over the dividing wall (27) from one compartment (25) into an adjacent compartment, feeding of alkylene oxide into at least one compartment (25) at the bottom of the compartment such that the alkylene oxide rises in the alcoholate, reacting of the alkylene oxide with the alcoholate or a secondary product being formed by the reaction of the alcoholate with alkylene oxide to give the polyetherol, discharging the reaction product from the bubble column (23).