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.

公开(公告)号：AT274009T

公开(公告)日：2004-09-15

申请号：AT98101527

申请日：1998-01-29

Applicant: BASF AG

Inventor： FALKE PETER DR ,  HENDREICH REGINA ,  SCHUSTER MARITA ,  ZASCHKE BERND DR

IPC: C08G18/40 ,  C08G18/48 ,  C08G18/66

公开(公告)号：DE19741257A1

公开(公告)日：1999-03-25

申请号：DE19741257

申请日：1997-09-19

Applicant: BASF AG

Inventor： FALKE PETER DR ,  ROTERMUND INGE ,  SCHUSTER MARITA ,  KLIPPERT STEFFEN DR

IPC: C08G18/40 ,  C08G18/65 ,  C08G18/66 ,  C08G18/32 ,  C08L75/04 ,  C08J9/12 ,  B68G11/04

Abstract: A polyol component used for the production of polyurethane foam contains at least one ethoxylated compound with 3-8 reactive hydrogen atoms and a high ethylene oxide content plus low-molecular weight polyfunctional chain-extenders and/or crosslinkers with a high hydroxyl number. Production of polyurethane (PUR) foam comprises reacting (a) optionally modified di- and/or poly-isocyanates, with (b) high-molecular weight compound(s) with at least two reactive hydrogen atoms, (c) ethylene oxide adduct(s) with 3-8, preferably 3-6 reactive H atoms, an ethylene oxide (EO) content of more than 50 wt.% and an OH number of 200-800 mg KOH/g, and (d) low-molecular weight chain- extenders and/or crosslinkers with at least two reactive H atoms and an OH number of more than 700 mg KOH/g, in the presence of (e) blowing agents, (f) catalysts, and optionally (g) other additives etc. An Independent claim is also included for PUR foam containing the above components, in which the amounts of (c) and (d) (based on the weight of components (b)-(g)) are 0.5-10 and 0.5-6 wt.% respectively, preferably with a mol. ratio of (c):(d) = 10-0.3, especially 3.0-0.3.

公开(公告)号：DE19705991A1

公开(公告)日：1998-08-20

申请号：DE19705991

申请日：1997-02-17

Applicant: BASF AG

Inventor： FALKE PETER DR ,  HENDREICH REGINA ,  FRITZ RALF DR ,  ROTERMUND INGE

IPC: C08G18/66 ,  C08G18/48 ,  C08G18/42 ,  C08G18/32 ,  C08G18/10 ,  C08L67/02 ,  C08L71/02 ,  C08L75/04

Abstract: Preparation of homogeneous disintegration stable polyurethane components, comprising a high molecule wt. compound(s) with at least two reactive H atoms and low molecule wt. chain extenders and/or crosslinkers and optionally propellants, catalysts and other aids, involves adding an amine(s) and least one organic and/or modified organic isocyanate. Also claimed are the obtained polyurethane components.

公开(公告)号：DE19519680A1

公开(公告)日：1996-12-05

申请号：DE19519680

申请日：1995-05-30

Applicant: BASF AG

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

IPC: C08G18/48 ,  C08G65/26 ,  C08G65/30

Abstract: The prepn. is of catalytically-active polyether-polyols (I) by base-catalysed reaction of H-functional starters (II) with alkylene oxide (III) under the usual conditions. The polymerisation of (III) is catalysed by adding a combination of base and (in)organic alkali(ne earth) salt(s) in stages and/or the catalyst is removed by special crystal formation and removal by adding acids and removing the salts before concluding the crystal formation or conversion phase. Also claimed are (I) per se.