Th. Goldschmidt Ag

Goldschmidt Ag

Evonik Goldschmidt Corporation

Georg Burkhart

Andreas Weier

Rolf-Dieter Langenhagen

Volker Zellmer

Tammo Boinowitz

Bernd-Jurgen Klietsch

Wilfried Knott

Jurgen Fock

Horst Dudzik

Dietmar Schaefer

Hans-Joachim Kollmeier

Klaus-Dieter Klein

Helmut Lammerting

Volker Mohring

Hans-Heinrich Schlons

Dietmar Wewers

Ingo Fleute-Schlachter

Georg Feldmann-Krane

Ralf Hoffmann

Hans-Heinrich Schl&ouml;ns

Helmut Schator

Rainer Ziegler

Volker Möhring

Juergen Droese

Felix M&uuml;ller

Jurgen Dröse

Volker Moehring

Andreas Weir

Anette Brune-Fischer

Anette Brune

Ingo Schlachter

Volker Moring

The invention relates to a process for the preparation of equilibration products of organosiloxanes by rearrangement of the siloxane bond to a cation exchange resin, the organopolysiloxanes thus obtainable and the use thereof.

Equilibration of siloxanes

Siloxane block copolymers having linked siloxane blocks

Use of silicon-polyether copolymers in the production of high resilience polyurethane foams

Innovative siloxane block copolymers with rigid spacers and their use

The invention relates to the use of metal salts of ricinoleic acid or solutions thereof in water or in organic solvents in producing polyurethane foams.

Use of metal salts of ricinoleic acid in producing polyurethane

The invention provides for a composition comprising a mixture of Si--C- and Si--O--C- linked silicone polyether block copolymers and the use of said compositions as an additive in the production of polyurethane foams.

Use of organofunctionally modified polysiloxanes in the production of

Block copolymers of the general average formula ##STR1## where, A=radical R.sup.1, radical D, or radical E,

Tetrahydrofuran-containing silicone polyethers

The invention relates to the use of polysiloxane-polyoxyalkylene copolymers of the general formula I ##STR1## as additives in the production of polyurethane foams.

Method of preparing polyurethane foam utilizing organofunctionally

The invention relates to the use of silicone-polyether copolymers of the formula I ##STR1## as surface-active substances in the production of high-resilience polyurethane foams.

Use of silicone polyether copolymers in the production of

The invention relates to the use of block copolymers having linked siloxane blocks of the general average formula ##STR1## as additive in the production of polyurethane foams.

Method of preparing polyurethane foam utilizing block copolymers having

The invention relates to a method for the production of high resilience polyurethane foams by reacting a mixture of highly reactive polyols, which usually have an average molecular weight of between about 4800 and 6500 g/mole and at least 70% primary hydroxyl groups and optionally contain fillers, polyfunctional isocyanates, amine activators, cross-linking agents, tin catalysts, blowing agents and stabilizers, compounds of the general formula ##STR1## being used as stabilizers, in which R.sup.1 is the same or different in the average molecule and represents a methyl group or a group of the general formula --CH.sub.2 --CH.sub.2 --(CH.sub.2).sub.a --C.sub.6 H.sub.3 (R.sup.2).sub.2 (a=0 or 1; R.sup.2 =--O--CH.sub.3), with the proviso that at least one R.sup.1 group is a group having the formula --CH.sub.2 --CH.sub.2 --(CH.sub.2)a--C.sub.6 H.sub.3 (R.sup.2).sub.2

Method for producing cold polyurethane foams

A method is described for the preparation of rigid foams, having urethane and/or isocyanurate groups and being extensively open celled, by reacting polyisocyanates with compounds having at least two groups capable of reacting with isocyanates and the equivalent weight per reactive group of which is about 9 to 800, in the presence of catalysts, surface active substances, as well as, optionally, physical blowing agents, flame retardants and other known auxiliary materials and finishing agents, wherein the reaction is carried out in the presence of liquid, higher molecular weight, unsaturated hydrocarbons, which are free of groups capable of reacting with isocyanates, in amounts of 0.01 to 3.0% by weight, based on the reaction formulation. Particularly preferred hydrocarbons are polybutadiene and polyoctenylene with an average molecular weight of 800 to 10,000 g/mole. The rigid foams, because of their open cell nature, exhibit high dimensional stability.

Method for the preparation of rigid foams having urethane and/or

The invention relates to polysiloxanes with 1) at least two polyether groups A and B, polyoxyalkylene group, with an average molecular weight of 600 to 5,500, consisting of 20 to 100% by weight of oxyethylene units and of 80 to 0% by weight of oxypropylene units and the polyoxyalkylene group B, with an average molecular weight of 700 to 5,000, consisting of 0 to &lt;20% by weight of oxyethylene units and of 100 to 80% by weight of oxypropylene units, and with 2) hydrocarbon groups with 6 to 30 carbon atoms, linked to silicon. The invention further relates to the synthesis of these polysiloxanes and their use as additives for hair cosmetics, particularly as additives for hair shampoos to improve the handle and the combability of the hair.

Polysiloxane-polyoxyalkylene block copolymers and their use as additives

High resilience polyurethane foams are produced by reacting a mixture of highly reactive polyols having a weight average molecular weight between about 4800 and 6500 g/mole and containing at least 70% primary hydroxyl groups and optionally fillers, polyfunctional isocyanates, amine activators, cross-linking agents, tin catalysts, blowing agents and stabilizers. The inventive stabilizers can be used universally in high resilience slabstock foam systems as well as in high resilience molded foam systems and in formulations based on pure TDI, TDI/MDI mixtures as well as on pure MDI in combination with appropriate polyols.

Growing community of inventors

Essen, Germany

Georg Burkhart