公开(公告)号：CA2229357A1

公开(公告)日：1998-09-13

申请号：CA2229357

申请日：1998-03-12

Applicant: WETTERLING MONIKA ,  AUER HEINZ ,  BRUHN JENS ,  WINKLER JUERGEN ,  GUETTES BERND ,  DINSCH STEFAN ,  HOEPPNER GERD ,  BASF AG

Inventor： BRUHN JENS ,  DINSCH STEFAN ,  WINKLER JUERGEN ,  GUETTES BERND ,  HOEPPNER GERD ,  AUER HEINZ ,  WETTERLING MONIKA

IPC: C08G65/30 ,  C07C43/11 ,  C07C41/42 ,  C08G18/48

Abstract: A process for treating polyether polyols prepared in a conventional manner by base-catalyzed reaction of H-functional initiator substances with alkylene oxides comprises a combination of a thermal-reactive step at a pH of less than 7 and a temperature above 60.degree.C and a thermal-distillative step in a countercurrent column using a purifying agent. The polyether polyols prepared according to the invention are used for producing low-fogging and low-odor PUR foams.

公开(公告)号：DE19700944A1

公开(公告)日：1998-07-16

申请号：DE19700944

申请日：1997-01-14

Applicant: BASF AG

Inventor： GUETTES BERND ,  DINSCH STEFAN ,  WETTERLING MONIKA ,  GEORGI GUNTER DR ,  MERTEN ANNE-KATHRIN

IPC: C08G18/28 ,  C08G18/38 ,  C08G18/48 ,  C08G65/26 ,  C08L71/02 ,  C08G18/50 ,  C07D263/24

Abstract: A polyether-polyol mixture (PPM) is claimed containing polyalkylene glycols of formula HO-(O-RCH-CH2)n-OH (I), nitrogen-containing polyetherols of formula N-R R R (II), oxazolidinones and/or their alkoxylates of formula (III), and possibly alkoxylates of higher functional alcohols and/or urea (derivatives) (IV). n = 1-20; R = H, (m)ethyl or optionally branched 3-20C alkyl; R = H or hydroxyalkylene; and R = hydroxyalkylene in formula (II), or H, Me or Et in formula (III). Also claimed is a process for the production of PPM by the base-catalysed reaction of alkylene oxides under conventional conditions with a mixture of aqueous or glycolic urea solution and possibly glycols and/or higher functional alcohols.