Basf Se Corporation

Olaf Jacobmeier

Gunnar Kampf

Zeljko Tomovic

Christian Koenig

Peter Huntemann

Rainer Hensiek

Michael Thater

Roland Fabisiak

Christian Renner

Sabrina Kronig

Sebastian Koch

Tobias Kaluschke

Michael Koesters

Lars SCHÖN

Antje Huskobla

Christian KÖNIG

Michael KÖSTERS

The present disclosure relates to a method for producing rigid polyurethane foam composite elements, including at least one outer layer and a rigid polyurethane foam layer, by mixing (a) polyisocyanates with (b) compounds having at least two hydrogen atoms reactive with isocyanate groups, (c) optionally flame retardant(s), (d) blowing agent, (e) catalyst, and (f) optionally auxiliaries and adjuvants to form a reaction mixture, applying the reaction mixture to the outer layer, and curing it to form the rigid polyurethane foam. The present disclosure further relates to a rigid polyurethane foam composite element obtainable by such a method.

Method for producing polyurethane hard foam composite elements using Mannich polyols

The invention relates to an improved process for producing composite elements comprising at least one outer layer and at least one isocyanate-based rigid foam layer by means of a fixed applicator apparatus and in which the flowable starting material comprises the following components: A) at least one polyisocyanate, B) at least one compound which reacts with isocyanate groups to form urethane, C) at least one blowing agent, D) catalysts comprising at least one compound D1) which catalyzes isocyanurate formation and at least one compound D2) which catalyzes polyurethane formation, comprising at least one amino group, and E) optionally auxiliaries and additives, where the manner of use of component A) and of component B) is such that the isocyanate index is at least 180, and where the ratio by weight of the compound D2) to the compound D1) is from 0.75 to 8.

Process for producing composite elements

The invention relates to rigid polyurethane foams obtainable by reaction of

Rigid polyurethane foams

A process for producing a rigid polyurethane foam by reacting an organic polyisocyanate with a polyol component containing a compound with at least two hydrogen atoms which are reactive toward isocyanate groups in the presence of a blowing agent, a catalyst, and optionally auxiliaries and additives, wherein the polyol component contains, by weight: 20 to 60 parts of a polyether alcohol having a functionality of 3.5 to 5.5 and a hydroxyl number of from 400 to 550 mg KOH/g; 1 to 20 parts of a polyether alcohol based on an aliphatic amine and having a functionality of 3.5 to 4.5 and a hydroxyl number of 450 to 900 mg KOH/g; 10 to 30 parts of a polyether alcohol and/or aromatic polyester alcohol having functionalities of 1.5 to 3 and a hydroxyl number of from 150 to 450 mg KOH/g; and optionally 1 to 5 parts of water.

Process for producing rigid polyurethane foams

A process for producing rigid polyurethane foams, in which a mixture of

The invention relates to a process for producing rigid polyurethane foams by reacting

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Luebbecke, Germany

Olaf Jacobmeier