Basf Aktiengesellschaft

Basf Corporation

Basf Se Corporation

Ulrich Treuling

Bernd Bruchmann

Dietrich Scherzer

Martin Kreyenschmidt

Ulrike Ehe

Hans Renz

Reinhard Lorenz

Andreas Arlt

Rolf Illguth

Peter Horn

Werner Bertleff

Georg Heinrich Grosch

Christian Maletzko

Karl Haeberle

Eugen Gehrer

Axel Kistenmacher

Dirk Kempfert

Rainer K&ouml;niger

Ulrich Steuerle

Armin Becker

Sarbananda Chakrabarti

Harald Larbig

Frank Schaefer

Dieter Junge

Klaus Wagner

Rainer Rahm

Edwin Baumann

Karl Häberle

Peter Roche

Maria Thomas

Georg Partusch

Klaus Pittrich

Markus Kraemer

Konrad Stiefenh&ouml;fer

Sven Lawrenz

Markus Bubolz

Jürgen Decker

Frank Wingerter

Rudolf Müller-Mall

Hans-Peter Frei

Gunter Tanny

Karl H{umlaut Over (a)}berle

Ilka Renate Beuermann

Anton Kappes

Rudolf M&uuml;ller-Mall

Kai Henke

Willi Riegel

Rainer Königer

Frank SCHÄFER

Markus KRÄMER

A process for producing a polycarbodiimide, comprising polymerizing a diisocyanate in the presence of a carbodiimidization catalyst in a reaction vessel in liquid phase at a temperature in the range of from 20 to 250&#xb0; C., at a pressure in the range of from 20 to 800 mbar and in the presence of at least one inert gas, wherein the at least one inert gas is introduced into the liquid phase in the reaction vessel with a flow rate in the range of from 0.1 x/h to 100 x/h, x being the volume of the reaction vessel.

Process for producing polycarbodiimide

High-functionality polyisocyanates are prepared by a process which comprises

High-functionality polyisocyanates

Compounds of the formula 1OCN&#x2014;R&#x2014;NHCOX&#x2014;R&#x2014;(Y)&#x2003;&#x2003;(1),where X is a covalent bond to Ror is O, S or NR, Y is a hydrogen atom or a free functional group and n is an integer from 1 to 20, can be used for functionalizing or modifying compounds or solid surfaces which have at least one group which is reactive toward isocyanate.

Building blocks containing isocyanate groups and their use for functionalizing or modifying compounds or surfaces

The invention relates to polyurethane foams comprising

Modified polyurethane foamed materials used as adsorbents

The present invention relates to a mixture that contains (i) at least one isocyanate and (ii) at least one organic and/or inorganic acid anhydride.

Mixture containing isocyanates as well as organic and/or inorganic acid anhydrides

In a process for preparing linear oligourethanes and polyurethanes by reacting 1 mole of a) diisocyanate with 1 mole of b) a compound having two groups which are reactive toward isocyanates, the functional groups of a) and/or b) have differing reactivities toward the functional groups of the other reactant and the reaction conditions are selected so that in each case only particular functional groups of a) and b) react with one another.

Linear oligourethanes and polyurethanes having a defined structure, their preparation and their use

Polyisocyanates

In a process for preparing dendritic or highly branched polyurethanes by reacting diisocyanates and/or polyisocyanates with compounds containing at least two groups which are reactive toward isocyanates, at least one of the reactants contains functional groups having a different reactivity compared to the other reactant and the reaction conditions are selected so that only certain reactive groups react with one another in each reaction step.

Dendritic and highly branched polyurethanes

In a process for preparing polyisocyanate polyaddition products by reacting isocyanates with compounds which are reactive toward isocyanates, in the presence or absence of blowing agents, catalysts, auxiliaries and/or additives, the reaction is carried out in the presence of (i) particles which have a size of <200 &mgr;m and a melting point in a range from 50 to 300&deg; C., or in the presence of thermoset particles (ii) or in the presence of particles (i) and (ii).

Preparation of polyisocyanate polyaddition products

Multi-metal cyanide complexes as catalysts and their use in preparing polyetherpolyols

Compact, transparent polyisocyanate polyaddition products are produced in a process by reacting (a) isocyanates with (b) compounds reactive to isocyanates, if desired in the presence of (c) catalysts and (d) auxiliaries and/or additives, which comprises using as (b) compounds reactive to isocyanates a mixture (i) which has an average functionality of >3 and an average hydroxyl number of from 300 to 950 mg KOH/g.

Compact, transparent polyisocyanate polyaddition products

Preparation of polyurethane foams

Inner parting agents for producing self-parting moldings made of polyisocyanate polyaddition products

In a process for producing foams based on polyisocyanate polyaddition products by reacting isocyanates with compounds which are reactive toward isocyanates and have a molecular weight of from 400 to 8000 in the presence of blowing agents, catalysts and, if desired, chain extenders and/or crosslinkers having a molecular weight of &lt;400, auxiliaries and/or additives, use is made of isocyanates having isocyanurate and/or biuret structures, at least one compound which is reactive toward isocyanates, has a molecular weight of from 400 to 8000 and contains at least 50% primary hydroxyl groups, as catalysts at least one tertiary amine and at least one metal salt plus from 0.5 to 5.3% by weight of water, based on the weight of the compounds which are reactive toward isocyanates and have a molecular weight of from 400 to 8000, and the reaction is carried out at &gt;40.degree. C.

Production of polyurethane foams

Growing community of inventors

Bensheim, Germany

Ulrich Treuling