Evonik Goldschmidt Corporation

Evonik Degussa Gmbh

Evonik Operations Gmbh

Harald Modro

Mladen Vidakovic

Martin Glos

William Bunting

Rüdiger Landers

Kai-Oliver Feldmann

Daniela Hermann

Eva Emmrich-Smolczyk

Rainer Ziegler

Ralf Althoff

Patrick Kuhlmann

Process for producing cold-cure flexible slabstock PU foams by reaction of at least one polyol component and at least one isocyanate component in the presence of water and at least one catalyst and at least one crosslinker, wherein no nitrogen-containing crosslinkers having an expanded OH number above 1000 mg KOH/g are employed in a total amount >0.5 parts by weight, preferably >0.1 parts by weight, based on 100 parts by weight of polyol.

Nitrogen-free and low-nitrogen crosslinking additives for cold-cure flexible slabstock foam having improved compression and aging properties

Described are (a) a process for production of polyurethane foam by reacting one or more polyol components with one or more isocyanate components, wherein wax having a congealing point in the range from 40&#xb0; C. to 90&#xb0; C. is employed as an additive, (b) a polyurethane foam obtainable by said process, (c) the use of waxes having a congealing point in the range from 40&#xb0; C. to 90&#xb0; C. as an additive in the manufacture of polyurethane foams to coarsen the foam structure, and also (d) a polyurethane foam production composition containing a wax having a congealing point in the range from 40&#xb0; C. to 90&#xb0; C.

PUR foam with enlarged cell structure

Aqueous cold-cure flexible foam stabilizer including the following components:

Aqueous cold-cure flexible stabilizer formulations

The present invention relates to aqueous cold-cure flexible foam stabilizer formulations for use in the production of highly elastic cold-cure polyurethane foams or for use in the production of cold-cure flexible foam activator blends for highly elastic cold-cure polyurethane foams, wherein the aqueous cold-cure flexible foam stabilizer formulation comprises the following components

The invention relates to a process for the preparation of polyurethane cold cure foams by reacting a mixture of highly reactive polyols, which usually have an average molecular weight of from about 4800 to 6500 g/mol and at least 70% of primary hydroxyl groups and optionally contain fillers, and polyfunctional isocyanates, amine activators, crosslinking agents, tin catalysts, blowing agents and stabilizers, wherein the stabilizers used are compounds of the general formula (1) the proportion of siloxanes with N&#x3e;9 being higher than 10% by weight and that with N&#x3e;12 being equal to or higher than 5% by weight.

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Gladbeck, Germany

Harald Modro