Bayer Aktiengesellschaft

Alberto C Gonzalez-Dorner

Artur Reischl

Gert Jabs

Manfred Dahm

Klaus Schulte

Wilfried Ebeling

Hans-Walter Illger

Volker Onnenberg

Hansjurgen Rabe

Bernd Lehmann

Werner Dietrich

Heinz Muller

Heinz Esser

Hans W Illger

Willi Kost

The instant invention is directed to a process for the production of flame resistant foams by the impregnation of polyurethane foams with a dispersion consisting substantially of an aluminum hydroxide, a polyurethane latex, an aluminosilicate and surface active substances which results in foams having very desirable mechanical properties as well as excellent flame resistant properties.

Process for production of flame resistant foam

The instant invention is directed to a process for the production of flame resistant foams by the impregnation of polyurethane foams with a dispersion consisting substantially of an aluminum hydroxide, a polyurethane latex, an alumino-silicate and surface active substances which results in foams having very desirable mechanical properties as well as excellent flame resistant properties.

Flame resistant foam

A flame-resistant polyurethane foam is obtained by treatment of the foam with a mixture of aluminium hydroxide and a carboxyl group-containing polychloroprene latex and cross-linking the latex with zinc oxide or magnesium oxide.

Flame-resistant polyurethane foam and a process for its production

A method for the continuous production of foam blocks or foam sandwich panels involving the application of the liquid foamable reaction mixture to the continuously moving shaping support in a manner which avoids large gas inclusions in the final product produced. The liquid foamable reaction mixture is preliminarily distributed by the use of a particular distributor channel means in a traverse direction to the continuously moving shaping support, permitted to flow in the form of a descending film exposed to the atmosphere to an intermediate storage means and then conveyed to said continuously moving shaping support. The distributor channel means may also be pivoted to control the outflow of the mixture.

Process for applying a layer of a liquid foamable reaction mixture to a

The instant invention relates to a process and an apparatus for applying a layer of liquid, foamable reaction mixture to a continuously moving support, such as for the production of foam blocks or foam sandwich panels having a thick foam core.

Apparatus for applying a layer of a liquid foamable reaction mixture to

The present invention relates to the production of polyurethane resins and foams from stable dispersions of ionic polyisocyanate-polyaddition products in a hydroxyl containing compound as dispersing agent which are formed by the process which comprises reacting:

Production of polyurethane resins using as active hydrogen material a

This invention relates to the use of certain finely divided, stable and relatively low viscosity dispersions of polyisocyanate polyaddition products in compounds having hyroxyl groups. The dispersions are produced by reacting

Polyurethane resins produced from active hydrogen containing material

The instant invention relates to the use of stable, relatively low viscosity dispersions of polyisocyanate-polyaddition products in hydroxyl containing compounds as dispersing agents in the preparation of polyurethane resins. The dispersions are made by a process which broadly comprises mixing an aqueous dispersion of an isocyanate-polyaddition product with a compound having at least two hydroxyl groups and having a boiling point about 100.degree. C, and thereafter at least partially distilling off the water.

Polyurethane resins prepared from active hydrogen containing material

The instant invention is directed to polyurethane foams and the process for their manufacture, wherein an organic polyisocyanate is reacted, in the presence of a blowing agent, with a dispersion of a polyurea and/or a polyhydrazodicarbonamide in a relatively high molecular weight organic compound containing at least one hydroxyl group.

Growing community of inventors

Leverkusen, Germany

Alberto C Gonzalez-Dorner