Basf Aktiengesellschaft

Sarbananda Chakrabarti

Peter Horn

Klaus Wagner

Otto Volkert

Stefan Adams

Martin Kreyenschmidt

Dieter Rodewald

Andreas Arlt

Erhard Reich

Klaus Schmutzer

Jurgen Schneider

Stefan Fox

Dietrich Scherzer

Peter Weyland

Ulrich Treuling

Heinrich Horacek

Ludwig Jung

Gerhard Lehr

Robert Gehm

Bernhard Naber

Dieter Hertel

Michael Gassan

Rolf Illguth

Mathias Pauls

Thomas Schupp

John Hutchison

The polyisocyanate polyaddition products comprise hydrophobic compounds plus at least one further compound selected from the group consisting of: (i) organic, cyclic compounds having a molecular weight of from 200 to 3000 g/mol, (ii) salts of metals of transition groups I, II and/or VIII, (iii) organic and/or inorganic acid anhydrides, (iv) cyclic sulfonic esters and/or sulfones, (v) lactones, lactams and/or cyclic esters and/or (vi) &agr;,&bgr;-unsaturated carboxylic acids, &agr;,&bgr;-unsaturated carboxylic acid derivatives, &agr;,&bgr;-unsaturated ketones and/or &agr;,&bgr;-unsaturated aldehydes.

Polyisocyanate polyaddition products

Preparation of polyurethane foams

In a process for reducing the primary amine content of a composition comprising at least one polyol, in which a composition comprising at least one polyol is admixed with at least one isocyanate which contains only secondary and/or tertiary, aliphatically bound isocyanate groups, isocyanate is added in an amount of up to 5% by weight, based on the total composition, and a polyol preparation is obtained.

Reduction of the amine content of recycled polyols

A flexible, flame-bondable polyurethane-polyether block foam is prepared by a process in which at least one diol is added to the block foam.

Preparation of flexible, flame-bondable polyurethane-polyether foams

Preparation of flexible, flame-bondable polyurethane polyether foams

Flame-resistant flexible polyurethane foams are produced by reacting

Production of flame-resistant flexible polyurethane foams

Rigid polyurethane foams, preferably semirigid polyurethane foams, are produced by reacting an organic and/or modified organic polyisocyanates with relatively high molecular weight polyhydroxyl compounds and, optionally, low molecular weight chain extenders and/or crosslinkers in the presence of water or mixtures of water and physically acting blowing agents, optionally, catalysts, at least one additive selected from the group consisting of sulfonate salts of an acid group-containing alkylene oxide polymer, a phosphonate salt of an acid group-containing alkylene oxide polymer, and mixtures thereof, additional other additives and optionally, auxiliaries. The polyurethane foams produced by this process can be used to produce composite comprising at least one covering layer and at least one layer comprising a rigid or semirigid polyurethane foam produced by the process of the present invention.

Production of rigid or semirigid polyurethane foams and composite

Liquid urethane-containing polyisocyanate mixtures which can be used to

Polyvinyl chloride/polyurethane foam composite elements, the productions

Adhesive products comprising an aminoalkyltrialkoxysilane, polyvinyl chloride powder, silicic acid and an organic solvent are employed to attach cover layers to cellular and non-cellular polyurethanes.

Adhesive products and a process for their use in polyurethanes

A process for the manufacture of dimensionally stable polyurethane foams by releasing, and curing by interaction with the atmosphere, a mixture, which is under pressure, of prepolymers, containing isocyanate groups, and blowing agents, with or without assistants and additives, wherein the prepolymers, containing isocyanate groups, are obtained by reaction of organic polyisocyanates with difunctional to octafunctional polyester-polyols and/or polyether-polyols, containing chemically bonded tertiary amino groups in the polymer chain, or, preferably, with mixtures of such polyester-polyols and/or polyether-polyols and nitrogen-free polyester-polyols and/or polyether-polyols.

Storage-stable prepolymers sprayable from a pressure vessel

Growing community of inventors

Mannheim, Germany

Sarbananda Chakrabarti