Basf Aktiengesellschaft

Basf Se Corporation

Heinz-Dieter Lutter

Bernd Bruchmann

Ruth Zschiesche

Werner Hinz

Dietrich Scherzer

Claudia Spang

Michael Lugmayr

Peter Horn

Berend Eling

Roland Minges

Markus Schuette

Udo Hadick

Jens Mueller

Gerd Rehmer

Hans Renz

Peter Falke

Christian Koenig

Klaus Wagner

Andre Meyer

Gerhard Ramlow

Sebastian Richter

Stephan Goettke

Frank Thielbeer

Michael Pcolinski

Walter Decker

Amir Doroodian

Manuela Faehmel

Kirsten Simon

Reinhard Leppkes

Volker Haase

Wei Han

Frank Prissok

Horst Binder

Theodore Michael Smiecinski

Achim Loeffler

Peter Deglmann

Hans U Schmidt

Harald Larbig

Wibke Loelsberg

Dejan Petrovic

Andreas Kunst

Johann Martin Szeifert

Daniel Freidank

Bernd Guettes

Stefan Dinsch

Sebastian Alexander Weisse

G&uuml;nter Mohrhardt

Joern Duwenhorst

Edmund Stadler

Peter Brandt

Erhard Reich

Steffen Mayer

Marc Claude Martin

Gerd Hoeppner

Klaus Pittrich

Reinhard Peters

Julia Christa Jaehnigen

Markus Susoff

Maike Grever

Johannes Poppenberg

Michael Hirn

Karl-Heinz Steinchen

Daniela Tepe

Ansgar Frericks

Hans-Jurgen Gabbert

Achim Besser

Anne Schubert

Volker Hasse

Angelika Mueller

Karl Fimmel

Jens M&uuml;ller

Claudio Petrini

Christoph Leseberg

Annika Johann-Krone

Stephan Göttke

Heinz-Juergen Schroeder

Stefanie Hiller

Franck Pomeris

Steven Edward Wujcik

Pamela Hoolt

Michael Kübler

Heinz-Jürgen Schröder

Jens Müller

Jens Varding

Achim Löffler

Described herein is a process for producing polyurethane foams having a density of 30 g/dmto 70 g/dm, in which (a) aromatic polyisocyanate is mixed with (b) polymeric compounds having isocyanate-reactive groups, (c) optionally chain extender and/or crosslinking agent, (d) catalyst, (e) blowing agent including water, (f) 0.1% to 5% by weight of lactam, and (g) optionally additives, at an isocyanate index of 50 to 95 to form a reaction mixture, and the reaction mixture is converted to the polyurethane foam, wherein the catalyst includes metal catalyst and amine catalyst, and the amine catalyst has tertiary nitrogen atoms and the content of tertiary nitrogen atoms in the amine catalyst is from 0.0001 to 0.003 mol/100 g of foam. Also described herein is a polyurethane foam and a method of using such a flexible polyurethane foam for the production of cushions, seat cushions, or mattresses.

Polyurethane foams with reduced aromatic amine content

A process for preparing a dispersion of inorganic oxide particles in polyester polyol by mechanically mixing of the inorganic oxide particles at a temperature of more than 160° C. with a polyester polyol having an acid number in the range of from 0.05 to 1.5.

Process for preparing a dispersion of inorganic oxide particles in polyester polyol

The present invention relates to a process for producing a flexible polyurethane foam thermally recyclable by fusion, and to hybrid materials made of flexible polyurethane foam and compact thermoplastic elastomer and/or expanded thermoplastic polyurethane.

Flexible polyurethane foams

Described herein is a process for producing a hydrophilic flexible polyurethane foam. Also described herein is a flexible polyurethane foam obtainable by such a process and a method of using such a flexible polyurethane foam for treating wounds.

Flexible polyurethane foams with high water absorption capacity

Described herein is a process for preparing a foam (FA) with a Poisson's ratio in the range of from &#x2212;0.5 to 0.3, the method including the steps of providing a foam (F1) with a flow resistance in the range of from 3000 to 8000 Pas/m, determined according to DIN EN 29053, and subjecting the foam (F1) to thermoforming including triaxial compression, wherein the foam (F1) is not reticulated prior to step (ii). Also described herein is the foam obtained or obtainable according to the process and the use of the foam as, for example, an energy absorbing device, preferably in protective gear, furniture, cushions, in cleaning devices with improved rinse-out behavior, in shoe soles, or as sealing, insulating or anchorage providing material for example used in earphones, ear plugs or dowels, or as acoustic material.

Auxetic polyurethane and melamine foams by triaxial compression

A graft macromer, comprising the reaction product of at least one macromer being at least one molecule which comprises in its structure one or more hydroxyl-terminated polyether and/or polyester chains, with at least one grafting compound which comprises in its structure at least one at least monoalkoxylated or at least monohalogenated silyl group and at least one alkyl, cycloalkyl or aryl containing group which is reactive towards the hydroxyl group of the macromer, is used for dispersing e.g. SiOin a polyol.

Oxidic silicon particle dispersion in polyol

Provided herein is a process for producing viscoelastic polyurethane foams having a density of from 100 g/dmto 300 g/dm, in which (a) polyisocyanate is mixed with (b) polymeric compounds having groups that are reactive toward isocyanates, (d) a catalyst, and (e) a blowing agent including water at an isocyanate index of from 50 to 95 to give a reaction mixture. The reaction mixture is placed in a mold and reacted to give the flexible polyurethane foam, wherein the polyisocyanate (a) is obtainable by mixing 4,4'-MDI and oligomers of propylene oxide having from 2 to 8 propylene oxide units. The polymeric compounds (b) include at least one polyalkylene oxide having a hydroxyl number of from 20 to 50 mg KOH/g derived from a trifunctional starter molecule and a proportion of ethylene oxide, based on the content of alkylene oxide, of from 0 to 10% by weight.

Viscoelastic foams having high density

Described herein is a process for producing flexible polyurethane foams, in which (a) polyisocyanate prepolymer, is mixed with (b) polymeric compounds having groups reactive toward isocyanates, (c) optionally chain extenders and/or crosslinkers, (d) catalyst, (e) blowing agent comprising water and (f) optionally additives to give a reaction mixture and reacted to give a flexible polyurethane foam.

Tack-free polyurethane flexible foam

The invention relates to a process for producing viscoelastic flexible polyurethane foams by reacting

Process for producing viscoelastic flexible polyurethane foams

A process for producing high resilience flexible polyurethane foams. The process includes forming a mixture of (a) isocyanate prepolymer, (b) polymeric compounds having isocyanate-reactive groups, (c) castor oil, (d) optionally chain-extending and/or crosslinking agents, (e) catalysts, (f) blowing agents, and optionally (g) additives, and reacting the mixture to form the flexible polyurethane foam. More than 5 wt % of (c) is used, based on the total weight of components (b) to (g), and (a) is obtained by mixing diphenylmethane diisocyanate (a1) and polyol 1 (a2) and also optionally further polyols, chain extenders and/or crosslinkers, where (a2) includes a polyalkylene oxide polyol having a hydroxyl number of 30 to 60, an average functionality of 2.3 to 3.2 and a propylene oxide fraction, based on the alkylene oxide content, of 70 to 100 wt %. A polyurethane foam obtained by the process, and the use of such a foam as an auto seat.

High resilience polyurethane foams comprising castor oil

The present invention relates to a process for preparing polyether polyols, in which at least one hydroxyl-comprising fatty acid ester and/or at least one hydroxyl-modified fatty acid ester is reacted with the aid of a double metal cyanide catalyst in at least two process sections with in each case a mixture of ethylene oxide and at least one further alkylene oxide different from ethylene oxide.

Polyether polyols, process for preparing polyether polyols and their use for producing polyurethanes

Invention relates to a process for producing viscoelastic flexible polyurethane foams by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups, wherein as b) a mixture of bi) from 25 to 70% by weight of a hydroxyl-comprising natural oil or fat or a reaction product of a hydroxyl-comprising natural oil or fat with alkylene oxides, bii) from 3 to 30% by weight of at least one polyether having a hydroxyl number of from 100 to 800 mg KOH/g and a functionality of 3-5 selected from the group consisting of polyether prepared by addition of alkylene oxides onto an amine, biii) 20-50% by weight of at least one polyether alcohol having a hydroxyl number of from 10 to 80 mg KOH/g and a functionality of 2-5, where the proportion of ethylene oxide is 5-25% by weight, based on the weight of the polyether alcohol, and at least part of the ethylene oxide is added on at the end of the polyether chain, biv) &#x3e;0-8% by weight of at least one polyether alcohol having a functionality of 2-4, a hydroxyl number of 15-60 mg KOH/g and a content of ethylene oxide of &#x3e;50% by weight of the polyether alcohol is used.

Method for producing viscoelastic polyurethane flexible foams

A process for producing viscoelastic flexible polyurethane foams by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups, c) blowing agents, wherein b) comprise b1) from 70 to 10 parts by weight of at least one polyether alcohol having polyoxypropylene units, a nominal functionality of from 3 to 6 and a hydroxyl number of 100 to 300 mg KOH/g, b2) from 10 to 70 parts by weight of at least one polyetherol having polyoxypropylene units, a nominal functionality of 2 and a hydroxyl number of 50 to 350 mg KOH/g, b3) from 10 to 30 parts by weight of at least one polyether alcohol having ethylene oxide units, a nominal functionality of from 2 to 3 and a hydroxyl number of 50 to 550 mg KOH/g, b4) from 0 to 20 parts by weight of at least one graft polyetherol having a nominal functionality of from 2 to 3 and a hydroxyl number of 20 to 40 mg KOH/g.

Process for producing viscoelastic polyurethane foams

Production of flexible polyurethane foams

Preparation of polyurethane foams

Growing community of inventors

Neckargemuend, Germany

Heinz-Dieter Lutter