Th. Goldschmidt Ag

Goldschmidt Ag

Evonik Goldschmidt Corporation

Goldschmift Ag

Golschmidt Ag

Roland Sucker

Stefan Silber

Michael Keup

Thomas Ebbrecht

Wolfgang Josten

Otto Klocker

Peter Muss

Michael Gippert

Martina Hartmann

Gotz Koerner

Eberhard Esselborn

Burghard Gruning

Hans-Ferdi Fink

Eckehard Schamberg

Roland Berger

Wernfried Heilen

Petra Hinrichs

Manfred Schmuck

Ellen Wallhorn

Hans-Leo Karminski

Herwig Fritsch

Manfred Grasse

Roland Spiegler

Ralf Schnelle

Frank Konig

The invention relates to hydrocarbon-free aqueous creams of organosilicon compounds, their preparation and their use. The hydrocarbon-free water-in-oil creams of organosilicon compounds comprise the components:

Water-in-oil creams of organosilicon compounds

The invention relates to the polyoxyalkylene-polysiloxane block polymers of general formula (I) C&#x2014;B&#x2014;(AB)&#x2014;C(I), wherein A=a polyoxyalkylene block of the general formula &#x2014;(CHO)&#x2014;, B=a polysiloxane block of the general formula &#x2014;(SiR&#x2014;O)&#x2014;, C, C=the same or different alkoxypolyoxyalkylene groups of the general formula Z&#x2014;O&#x2014;[CH&#x2014;CH(R)O]&#x2014;, R=the same or different Calkyl groups or phenyl groups, with the proviso that at least 90% of the groups R are methyl groups, R=the same or different hydrogen, Calkyl groups or phenyl groups, Z=an alkyl, alkylene, aryl or alkylaryl group, a=1 to 20, preferably 2 to 10, b=an average value of 10 to 130, preferably 20 to 100, c=3 to 100, preferably 10 to 80, d=independently is in the range of C/Cvalues of 2 to 20, preferably 2 to 12, with the proviso that the average value is in the range of 2 to &#x3c;15, preferably 2 to 12, especially 5 to 10, and d is preferably unequal b, n=2 to 12 having an average value of 2.7 to 4.0. The invention also relates to a method for producing said block polymers and to their use in antifoaming agents in aqueous dispersions.

Polyoxyalkylene-polysiloxane block polymers, a process for preparing them and their use as defoamers in aqueous dispersions

Use of water-insoluble polyoxyalkylene-polysiloxane block copolymers for defoaming aqueous media

Defoamers for aqueous media

Water-insoluble poly(oxy-1,4-butanediyl)-containing polyoxyalkylene-polysiloxane block copolymers for defoaming aqueous media

Use of water-insoluble poly(oxy-1,4-butanediyl)-containing polyoxyalkylene-polysiloxane block copolymers for defoaming aqueous media

Use of water-insoluble polyoxyarylene-polysiloxane block copolymers for defoaming aqueous media

A defoamer emulsion, based on organofunctionally modified polysiloxanes, is obtained by mixing one or several more closely defined organofunctionally modified siloxanes and, optionally, finely divided silica, and emulsifying the mixture by means of a low-shear stirrer with water which contains a hydrophilic, organofunctionally modified polysiloxane.

Defoamer emulsion based on organofunctionally modified polysiloxanes

The invention relates to compound antifoams comprising alkoxylated partial esters--using from 3 to 60 mol of propylene oxide with or without from 1 to 10 mol of styrene oxide and/or from 1 to 10 mol of butylene oxide--of oligoglycerols, obtainable by condensation of 2 to 20 glycerol molecules, with C.sub.8 to C.sub.22 fatty acids and inorganic or organic solids for defoaming polymer dispersions and aqueous coating systems.

Compound antifoams for defoaming polymer dispersions and aqueous coating

Polysiloxane-polyoxyethylene-polyoxypropylene triblock copolymers having the general formula: ##STR1## as well as compounds for the defoaming of aqueous dispersion paints that are disclosed contain the copolymers as effective defoaming components.

Polysiloxane-polyoxyethylene-polyoxypropylene triblock copolymers and

A composition is disclosed which is useful for the water-repellent impregnation of porous mineral building materials. The composition is based on organosilicon compounds which contain alkoxy groups and comprises an emulsion which contains 2.5 to 25% by weight of an alkoxysilane of the formula

Preparation for the water-repellent impregnation of porous mineral

Polyoxyalkylene-polysiloxane block copolymers are disclosed which exhibit an outstanding defoaming action and have the special advantage of not causing wetting defects when dispersions defoamed therewith are applied on a 2-dimensional substrate. Dispersions of polymeric organic substances, especially dispersions of vehicles, coating agents and adhesives are defoamed by the addition of 0.01 to 2.0% by weight, based on the dispersion to be defoamed, of a polyoxyalkylene-polysiloxane block copolymer of the formula,

Method for defoaming aqueous dispersions of polymeric organic substances

Growing community of inventors

Werne, Germany

Roland Sucker