公开(公告)号：DE19710443A1

公开(公告)日：1998-09-17

申请号：DE19710443

申请日：1997-03-13

Applicant: BASF AG

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

IPC: C08G65/30 ,  C08G18/48 ,  C08L75/08

Abstract: The treatment of polyether-polyols (I) which are obtained by conventional base-catalysed reaction of H- functional starters with alkylene oxides and then freed from catalyst and optionally any salt produced. Treatment comprises a combination of (a) thermal reaction at a pH of less than 7 and a temperature above 60 degrees C and (b) thermal distillation in a counter-current column using a purifying agent (II). Preferably step (a) is carried out at a pH of less than 6, preferably by adding acid and/or acidic substances, or by performing this step in presence of acid-reacting sorbents. The temperature rises to above 90 degrees C in step (a). Step (b) is carried out in a column with a counter-current of (II) at a gas velocity of 0.1-2 m/sec. and a liquid loading of 1-10 m /m /hr.

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.

公开(公告)号：DE19544121A1

公开(公告)日：1997-05-28

申请号：DE19544121

申请日：1995-11-27

Applicant: BASF AG

Inventor： HINZ WERNER DR ,  GUETTES BERND ,  HEINRICH HORST

IPC: C08G18/40 ,  C08G18/42 ,  C08G18/64 ,  C08G18/66 ,  C08G18/10 ,  C08G18/48 ,  C08G63/20 ,  C08G63/91 ,  C08L75/04

Abstract: Production of compact or cellular polyurethanes (I) containing oligo- and/or polysaccharide involves reacting (a) high molecular compounds with at least 2 reactive hydrogen atoms with (b) organic and/or modified organic polyisocyanates, optionally in the presence of (c) chain extenders and/or crosslinking agents, (d) blowing agents, (e) catalysts and (f) ancillaries. The high molecular compounds (a) comprise (a1) 1-99 wt.% polyol(s) and/or polyoxyalkylene polyamine(s) and (a2) 1-99 wt.% polyester-polyol component (II) obtained by reacting (a21) 10-99 wt.% polyester-polyol(s) (III) with (a22) 1-90 wt.% oligo- and/or polysaccharides (IV), before, during or after production of (III). Also claimed are (I) produced in this way and mouldings made from (I).

公开(公告)号：DE19528539A1

公开(公告)日：1997-02-06

申请号：DE19528539

申请日：1995-08-03

Applicant: BASF AG

Inventor： GUETTES BERND ,  HEINRICH HORST ,  GRUNER HELMUT ,  MEYER BAERBEL

IPC: C08G18/42 ,  C08G63/78 ,  C08G63/85 ,  C08G63/82 ,  C08G63/12 ,  C08G18/66

Abstract: Prepn of polyesterpolyols by polycondensation of multifunctional carboxylic acids with multifunctional alcohols is effected in the following 2 stages: (1) condensation at 150-250[deg]C under normal pressure or in a vacuum of up to 10 mbar to a prod. with acid number 2-10 mg KOH/g; and (2) addn. of an esterification catalyst and condensation at 250-290 (pref 260-275)[deg]C and under a vacuum of 1-50 mbar. Also claimed is prepn of opt foamed polyurethanes from polyisocyanates, polyols of mol wt 400-10,000 and opt also low mol chain extenders, blowing agents etc, with the polyol being obtd as per stages (1) and (2) above.

公开(公告)号：DE19521058A1

公开(公告)日：1996-12-12

申请号：DE19521058

申请日：1995-06-09

Applicant: BASF AG

Inventor： DINSCH STEFAN ,  PRETZSCH REGINA ,  WINKLER JUERGEN ,  GUETTES BERND ,  STEINCHEN KARL-HEINZ

IPC: C08G18/48 ,  C08G18/50 ,  C08G65/26

Abstract: The prodn. of aromatic polyether-polyols (I) comprises alkoxylation at 70-135 degrees C and 0.1-1.0 MPa of an H-functional starter consisting of a mixt. of at least 95 wt% 2,3- and 3,4- toluylenediamine (TDA), 0.5-4 wt% 2,4- and 2,6-TDA and 0.1-1.5 wt% volatile fractions from TDA prodn. Also claimed are polyols (I) obtd. by this process.

公开(公告)号：DE19519679A1

公开(公告)日：1996-12-05

申请号：DE19519679

申请日：1995-05-30

Applicant: BASF AG

Inventor： FALKE PETER DR ,  KNORR GOTTFRIED DR ,  ROTERMUND INGE ,  GUETTES BERND

IPC: C08G18/16 ,  C08G18/22 ,  C08G18/48 ,  C08J9/14 ,  C08L75/04 ,  C08K3/32 ,  C08J9/00 ,  C08G18/40 ,  C08G18/65 ,  E04B1/62

Abstract: Prepn. of rigid polyurethane foam with reduced after-expansion and decreased mould release times comprises reacting (a) organic and/or modified organic polyisocyanates with (b) high molecular cpd(s). contg. at least 2 reactive H atoms and opt. (c) low molecular chain extender and/or crosslinker in the presence of (d) blowing agent, (e) catalyst, (f) alkali metal salt (I) and opt. (g) other ancillaries and/or additives. (I) is dialkali H phosphate (IA) with an alkali content of 50-2500 ppm w.r.t. the amt. of components (b)-(g). Also claimed is the obtd. foam.