Basf Aktiengesellschaft

Basf Aktiengellschaft

Robert Gehm

Matthias Marx

Peter Horn

Heinrich Horacek

Otto Volkert

Herbert Stutz

Dietmar Nissen

Peter Weyland

Sarbananda Chakrabarti

Wolfram Frank

Artur Roeber

Mathias Pauls

Hellmut Bunsch

Impact-resistant nylon molding materials are prepared by activated alkaline lactam polymerization by a process in which the polymerization is carried out in the presence of a graft polymer in which

Preparation of impact-resistant nylon molding materials by alkaline

The invention describes a process for harmonizing the reaction rates for the formation of urethane and isocyanurate groups during the preparation of polyurethane-polyisocyanurate foams by reacting organic polyisocyanates with polyols in the presence of blowing agents and salts of amines having the formula ##STR1## as catalysts, wherein R stands for an hydrogen atom or a straight chained or branched alkyl radical with 1 to 19 carbon atoms, and n and m are equal or different whole numbers from 2 to 10.

Process for the preparation of polyurethane-polyisocyanurate foams

Stable water glass solutions are obtained

Stable water glass solutions, process for their preparation and use for

Polymer polyol dispersions are prepared by reacting polyepoxides with epoxide resin hardeners in the presence of polyester and polyoxyalkylene polyether polyols.

Process for the manufacture of stable polymer polyol dispersions

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

Hard, rigid, non-elastomeric, non-cellular polyurethane compositions manufactured by reacting a liquid hydroxylic polyether having an OH equivalent weight of from 50 to 250, a monofunctional hydroxylic polyether having a molecular weight of from 150 to 10,000 and devoid of further functional groups which react with isocyanates, and an organic polyisocyanate, with or without catalysts, auxiliaries and additives.

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Limburgerhof, Germany

Robert Gehm