Bayer Aktiengesellschaft

Peter Seifert

Klaus Konig

Peter Haas

Heinz Muller

Kurt Findeisen

Kuno Wagner

Hans-Walter Illger

Franz-Josef Bohne

Marc Herrmann

Jan Mazanek

Manfred Dietrich

Johannes Blahak

Holger Meyborg

Wolfgang Reichmann

Peter Vehlewald

Hans Hettel

Hans-Detlef Arntz

Roland Gipp

Klaus Brecht

Michael Schneider

Gernot Becker

Robert Zollner

Bernhard John

Kuuno Wagner

Klaus K/o/ Nig

A process for preparing oil and petroleum-resistant cellular to solid (polyurea)polyurethanes (PURS) with improved physical properties in which a polyether polyol component having a number average molecular weight of from 1000 to 8000 and a polyester polyol component having a number average molecular weight of from 1000 to 6000 are reacted with a polyisocyanate and the (polyurea) polyurethanes produced by that process. The (polyurea)polyurethanes are particularly useful for personal safety equipment and in the construction of automobiles.

Polyurea polyrethanes having improved physical properties

The invention relates to flame-resistant high resilience cold-cure moulded foams, processes for the production thereof and use thereof.

Flame resistant HR cold-moulded foam with a reduced fume density and toxicity

The invention relates to flame-resistant HR cold-cure moulded foams with reduced smoke intensity and toxicity, a process for the preparation thereof and the use thereof.

Flame-resistant hr cold-moulded foam with reduced fume density and toxicity

The present invention is directed to a stable dispersion of a polyurea and/or a polyhydrazodicarbonamide in a relatively high molecular weight hydroxyl-group containing material, which dispersion has a solids content of from 5 to 50 percent by weight and which is obtained by reacting

Stable dispersions of polyureas and/or polyhydrazo-dicarbonamides in

This invention relates to polyurethane foams capable of being welded by high frequency welding and a process for producing the same, characterized by the addition of certain ammonium salts of acids containing phosphorus to the starting components for the polyurethane foam in order that the polyurethane starting materials and the polyurethanes contain from 0.1 to 10%, by weight, of ammonium salts of phosphorus-containing acids. Phosphorus-containing ammonium salts which are available in the liquid form and completely soluble in polyols are particularly suitable with salts of phosphoric acid mono- and dibutyl esters, dialkyl phosphinic acids, alkyl phosphonic acids and alkyl phosphonic acid monomethyl esters being preferred. The addition of these acids significantly increases the dielectric loss factor of thermoplastic polyurethane foams and, therefore, also considerably increases their capacity for being welded by high frequency welding.

Polyurethane foams suitable for high frequency welding and process for

Solutions of oligo-urethane ethers in polyether polyols and their use in

The present invention relates to a process for the preparation of polyurethane foams capable of being flame laminated and high frequency welded, comprising reacting:

Dialkoxy-phosphonyl-N-alkyl-formic acid amides

A solution of a polyurethane in a polyol is made from (a) the reaction product of a polyisocyanate and a diprimary diol, and (b) a polyether in which the reaction product constitutes from 3 to 60 wt. % of the solution. Suitable diprimary diols have a molecular weight of from 90 to 800 and a structure at both hydroxyl groups corresponding to the general formula: ##STR1## in which R.sub.1 represents chlorine, an alkyl, cycloalkyl, aralkyl or aryl radical having from 1 to 10 carbon atoms, which carbon atoms may be substituted or interrupted by chlorine, ester groups, ether groups, amide groups, urethane groups or nitrile groups, and

Solution of a polyurethane in a polyol and a process for using such a

Dialkoxy-phosphonyl-N-alkyl-formic acid amides and their use as

Novel, finely divided, redispersible dispersions of high melting polyesters in low melting polyhydroxyl compounds are disclosed. Disclosed also is a process for their preparation and their use as polyol components containing fillers in the production of cellular or non-cellular polyurethanes.

Dispersions of high melting polyesters in polyhydroxyl compounds, a

The instant invention is directed to a process for the production of elastic polyurethane foams capable of being flame laminated and high frequency welded, comprising reacting

Process for the manufacture of elastic polyurethane foams capable of

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Bergisch Gladbach, Germany

Peter Seifert