公开(公告)号：DE19629161A1

公开(公告)日：1998-01-22

申请号：DE19629161

申请日：1996-07-19

Applicant: BASF AG

Inventor： BERND GUETTES ,  SCHUSTER MARITA ,  MEYER BAERBEL ,  ZASCHKE BERND DR

IPC: C08G18/40 ,  C08G18/42 ,  C08G18/66 ,  C08G63/127 ,  C08G63/20 ,  C08G63/668 ,  C09K21/14 ,  C08L75/04 ,  B29C67/20 ,  B68G11/04

Abstract: Preparation of thermally stable, soft polyurethane foam, comprises reacting optionally modified organic polyisocyanates (A) with high molecular weight compounds (B) containing at least two reactive hydrogen atoms and optional low molecular weight chain extenders and/or cross-linking agents (C), in the presence of propellants (D), catalysts (E), flame retardants (F) and optional auxiliary agents and/or additives (G).(B) are mixed condensation reaction products, comprising a mixture of at least two dicarboxylic acid/polyfunctional alcohol pre-condensation reaction products, or at least one dicarboxylic acid/polyfunctional alcohol pre-condensation reaction product and a reagent mixture based upon this product for a condensation polymer, which are subjected to a post-condensation reaction.

公开(公告)号：DE19528538A1

公开(公告)日：1997-02-06

申请号：DE19528538

申请日：1995-08-03

Applicant: BASF AG

Inventor： GUETTES BERND ,  SCHUSTER MARITA ,  HEINRICH HORST ,  SCHLUETER HANNELORE ,  WENZEL MARION

IPC: C08G18/42 ,  C08G63/90 ,  C09K21/14 ,  C08G18/66 ,  C08G63/16 ,  C08G63/181 ,  C08G63/20 ,  C08G63/672 ,  C08L75/04

Abstract: Redn. of the "fogging effect" in flexible polyurethane foam prodn from (a) opt. modified organic polyisocyanate, (b) high molecular cpds. with at least 2 reactive H and opt. (c) low molecular chain extenders and/or crosslinkers in presence of (d) blowing agents, catalysts, flame retardants, etc. is achieved by using as (b) specially treated polyester- or polyetherester-polyols which have been extracted with solvents after having been obtd. by polycondensation of dicarboxylic acids with polyfunctional alcohols.

公开(公告)号：CA2609308A1

公开(公告)日：2006-11-30

申请号：CA2609308

申请日：2006-05-17

Applicant: BASF AG

Inventor： DROGLA VERENA ,  ARLT ANJA ,  VARENKAMP VOLKER ,  SCHUSTER MARITA ,  EISENHARDT ANDREA

IPC: C08G18/18 ,  C08G18/10

Abstract: The invention relates to a process for producing viscoelastic polyurethane foams by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups in the presence of c) catalysts, d) blowing agents, wherein ai) diphenylmethane diisocyanate or aii) mixtures of diphenylmethane diisocyanate and polymethylenepolyphenylene polyisocyanates and/or aiii) prepolymers which comprise isocyanate groups and can be prepared by reacting aiv) polyether alcohols with diphenylmethane diisocyanate or mixtures of diphenylmethane diisocyanate and polymethylenepolyphenylene polyisocyanates are used as a) polyisocyanates and mixtures of at least one catalyst ci) and at least one catalyst cii) are used as catalysts.

公开(公告)号：AT251127T

公开(公告)日：2003-10-15

申请号：AT01128812

申请日：2001-12-04

Applicant: BASF AG

Inventor： MURRAR IMBRIDT ,  PLAUMANN HEINZ DR ,  WINKLER JUERGEN ,  SCHUSTER MARITA

IPC: C07C273/18 ,  C08G18/16 ,  C08G18/40 ,  C08G18/78

Abstract: Highly functional aromatic polyisocyanates are prepared by reacting aromatic polyisocyanates, if required as a mixture with further mono- and/or polyisocyanates, with addition of catalytic acidic substances and water, by a process wherein the aromatic polyisocyanates used comprise at least one tolylene diisocyanate and the catalytic acidic substance used is at least one alkyl and/or aralkyl phosphate, and the process is carried out in such a way that the water is added with a temperature/time gradient increase from 5 to 60°/hour and until an isocyanate modification of the starting NCO terminal groups from 1 to 80% is established. The highly functional aromatic polyisocyanates prepared by this process are used for the preparation of polyurethane foams, in particular flexible polyurethane foams.

公开(公告)号：DE10064646A1

公开(公告)日：2002-07-04

申请号：DE10064646

申请日：2000-12-22

Applicant: BASF AG

Inventor： MURRAR IMBRIDT ,  PLAUMANN HEINZ ,  WINKLER JUERGEN ,  SCHUSTER MARITA

IPC: C07C273/18 ,  C08G18/16 ,  C08G18/40 ,  C08G18/78 ,  C08G18/76 ,  C08J9/00

Abstract: Highly functional aromatic polyisocyanates are prepared by reacting aromatic polyisocyanates, if required as a mixture with further mono- and/or polyisocyanates, with addition of catalytic acidic substances and water, by a process wherein the aromatic polyisocyanates used comprise at least one tolylene diisocyanate and the catalytic acidic substance used is at least one alkyl and/or aralkyl phosphate, and the process is carried out in such a way that the water is added with a temperature/time gradient increase from 5 to 60°/hour and until an isocyanate modification of the starting NCO terminal groups from 1 to 80% is established. The highly functional aromatic polyisocyanates prepared by this process are used for the preparation of polyurethane foams, in particular flexible polyurethane foams.

公开(公告)号：NO20016181A

公开(公告)日：2002-06-24

申请号：NO20016181

申请日：2001-12-18

Applicant: BASF AG

Inventor： MURRAR IMBRIDT ,  PLAUMANN HEINZ ,  WINKLER JUERGEN ,  SCHUSTER MARITA

IPC: C08G18/16 ,  C08G18/40 ,  C08G18/78 ,  C08G18/00

CPC classification number: C08G18/166 ,  C08G18/4072 ,  C08G18/7831 ,  C08G2101/0008 ,  C08G2101/005 ,  C08G2101/0083

公开(公告)号：NO20016181D0

公开(公告)日：2001-12-18

申请号：NO20016181

申请日：2001-12-18

Applicant: BASF AG

Inventor： MURRAR IMBRIDT ,  PLAUMANN HEINZ ,  WINKLER JUERGEN ,  SCHUSTER MARITA

IPC: C07C273/18 ,  C08G18/16 ,  C08G18/40 ,  C08G18/78 ,  C08G

Abstract: Highly functional aromatic polyisocyanates are prepared by reacting aromatic polyisocyanates, if required as a mixture with further mono- and/or polyisocyanates, with addition of catalytic acidic substances and water, by a process wherein the aromatic polyisocyanates used comprise at least one tolylene diisocyanate and the catalytic acidic substance used is at least one alkyl and/or aralkyl phosphate, and the process is carried out in such a way that the water is added with a temperature/time gradient increase from 5 to 60°/hour and until an isocyanate modification of the starting NCO terminal groups from 1 to 80% is established. The highly functional aromatic polyisocyanates prepared by this process are used for the preparation of polyurethane foams, in particular flexible polyurethane foams.

公开(公告)号：DE59800587D1

公开(公告)日：2001-05-10

申请号：DE59800587

申请日：1998-08-25

Applicant: BASF AG

Inventor： WETTERLING MONIKA ,  SCHUSTER MARITA ,  GUETTES BERND ,  KUHN SIMONE

IPC: B60N2/70 ,  C08G18/40 ,  C08G18/48 ,  C08G18/65 ,  C08G65/26 ,  C08G65/28

Abstract: Flexible foams based on polyisocyanate polyaddition products are produced by reacting polyisocyanates with compounds which are reactive toward isocyanates in the presence of catalysts, blowing agents and, if desired, flame retardants, auxiliaries and/or additives, wherein polyether polyalcohols (c) which are obtainable by addition of alkylene oxides onto substances containing active hydrogens are used as substances which are reactive toward isocyanates, where, in a first stage, at least one substance (a) containing 2 or 3 active hydrogens is reacted with at least one alkylene oxide in the presence or absence of catalysts, subsequently at least one substance (b) which contains at least four active hydrogens and, if desired, further catalyst is added to the reaction mixture from the first stage and this mixture is then reacted in a second stage with at least one alkylene oxide.

公开(公告)号：AT200298T

公开(公告)日：2001-04-15

申请号：AT98115983

申请日：1998-08-25

Applicant: BASF AG

Inventor： WETTERLING MONIKA ,  SCHUSTER MARITA ,  GUETTES BERND ,  KUHN SIMONE

IPC: B60N2/70 ,  C08G18/40 ,  C08G18/48 ,  C08G18/65 ,  C08G65/26 ,  C08G65/28

Abstract: Flexible foams based on polyisocyanate polyaddition products are produced by reacting polyisocyanates with compounds which are reactive toward isocyanates in the presence of catalysts, blowing agents and, if desired, flame retardants, auxiliaries and/or additives, wherein polyether polyalcohols (c) which are obtainable by addition of alkylene oxides onto substances containing active hydrogens are used as substances which are reactive toward isocyanates, where, in a first stage, at least one substance (a) containing 2 or 3 active hydrogens is reacted with at least one alkylene oxide in the presence or absence of catalysts, subsequently at least one substance (b) which contains at least four active hydrogens and, if desired, further catalyst is added to the reaction mixture from the first stage and this mixture is then reacted in a second stage with at least one alkylene oxide.

公开(公告)号：DE19811472A1

公开(公告)日：1999-09-23

申请号：DE19811472

申请日：1998-03-17

Applicant: BASF AG

Inventor： FALKE PETER ,  HENDREICH REGINA ,  SCHUSTER MARITA ,  OSWALD OTTO ,  SCHMUTZER KLAUS

IPC: C08G18/40 ,  C08G18/66 ,  D06N3/14 ,  C08G18/64 ,  C08G18/38 ,  C08G18/48 ,  C08G18/32 ,  C08L75/00 ,  C08J9/14 ,  B29C44/12

Abstract: The polyol component in a low-penetration polyurethane (PUR) reaction mixture used for foam-backing sheet materials comprises a polyol containing dispersed ureas obtained by reacting NH-functional compounds with isocyanates. A process for foam-backing sheet materials with PUR showing a reduced depth of penetration comprises coating porous sheet material with a reaction mixture containing (a) polyisocyanate(s), (b) compound(s) with at least 2 reactive hydrogen atoms, optionally (c) blowing agents, (d) catalysts and (e) other additives etc. and allowing the mixture to react on the substrate. Component (b) is a polyol containing dispersed ureas obtained by reacting NH-functional compounds with isocyanates. An Independent claim is also included for a PUR foam-backing system with a reduced depth of penetration, containing components (a)-(e) as above.