公开(公告)号：DE50205319D1

公开(公告)日：2006-01-26

申请号：DE50205319

申请日：2002-02-14

Applicant: BASF AG

Inventor： LUTTER DR ,  BRUCHMANN DR ,  WAGNER KLAUS ,  MUELLER JENS

IPC: C08G18/40 ,  C08G18/48 ,  C08G18/63

Abstract: Preparation of soft polyurethane (PU) foam (A) by reacting a polyisocyanate (I) with a block polyoxypropylene-polyoxyethylene polyol (II), having at least two isocyanate-reactive hydrogen atoms; hydroxy number 25-45 mg potassium hydroxide/g and content of terminally bound ethylene oxide units 15-17wt.% on total amount of alkylene oxide. Preparation of soft polyurethane (PU) foam (A) by reacting a polyisocyanate (I) with a block polyoxypropylene-polyoxyethylene polyol (II), having at least two isocyanate-reactive hydrogen atoms; hydroxy number 25-45 mg potassium hydroxide/g and content of terminally bound ethylene oxide units 15-17wt.% on total amount of alkylene oxide. (II) is prepared by addition of ethylene and propylene oxides to a starter molecule (III) of mean functionality 3. Independent claims are also included for: (a) (A) produced by the new method; (b) (II); and (c) polyol mixture, for preparing soft PU, that contains at least one (II).

公开(公告)号：DE10314762A1

公开(公告)日：2004-10-14

申请号：DE10314762

申请日：2003-03-31

Applicant: BASF AG

Inventor： LUTTER HEINZ-DIETER ,  ELING BEREND ,  MUELLER JENS ,  BRUCHMANN BERND ,  WAGNER KLAUS

IPC: C08G18/10 ,  C08G18/48 ,  C08G18/76 ,  C08G18/70 ,  C08J9/08

Abstract: A polyisocyanate component used for the production of flexible polyurethane foam with water as blowing agent comprises a mixture of a prepolymer obtained by reacting excess MDI with non-polar polyether-polyol(s) and a prepolymer obtained by reacting excess MDI with polar polyether-polyol(s). A method for the production of flexible polyurethane foam by reacting (a) polyisocyanates with (b) compounds with at least two NCO-reactive hydrogens in presence of (c) water as blowing agent, in which component (a) is a mixture of (ai) a prepolymer obtained by reacting MDI with less than the stoichiometric amount of non-polar polyether-polyol(s) and (aii) a prepolymer obtained by reacting MDI with less than the stoichiometric amount of polar polyether-polyol(s). An independent claim is also included for flexible polyurethane foam obtained by this method.

公开(公告)号：DE10111823A1

公开(公告)日：2002-09-26

申请号：DE10111823

申请日：2001-03-13

Applicant: BASF AG

Inventor： LUTTER HEINZ-DIETER ,  BRUCHMANN BERND ,  WAGNER KLAUS ,  MUELLER JENS

IPC: C08G18/40 ,  C08G18/48 ,  C08G18/63 ,  C08G59/14

Abstract: Preparation of soft polyurethane (PU) foam (A) by reacting a polyisocyanate (I) with a block polyoxypropylene-polyoxyethylene polyol (II), having at least two isocyanate-reactive hydrogen atoms; hydroxy number 25-45 mg potassium hydroxide/g and content of terminally bound ethylene oxide units 15-17wt.% on total amount of alkylene oxide. Preparation of soft polyurethane (PU) foam (A) by reacting a polyisocyanate (I) with a block polyoxypropylene-polyoxyethylene polyol (II), having at least two isocyanate-reactive hydrogen atoms; hydroxy number 25-45 mg potassium hydroxide/g and content of terminally bound ethylene oxide units 15-17wt.% on total amount of alkylene oxide. (II) is prepared by addition of ethylene and propylene oxides to a starter molecule (III) of mean functionality 3. Independent claims are also included for: (a) (A) produced by the new method; (b) (II); and (c) polyol mixture, for preparing soft PU, that contains at least one (II).