Wacker Chemie Ag

Wacker Polymer Systems Gmbh & Co. Kg

Akzo Nobel N.v.

Wacker-chemie Gmbh

Kuraray Europe Gmbh

Wacker-chemie Gmbh Hanns- Seidel-platz 4

Wacker Polymer Systems, Gmbh & Co.

Abdulmajid Hashemzadeh

Klaus Kohlhammer

Konrad Alfons Wierer

Claudia Schmidt

Klaus Marquardt

Harald Zeh

Walter Dobler

Klaus Kolhammer

Peter Asbeck

Doris Bauer

Rudolf Weissgerber

Thomas Bastelberger

Reinhard Haerzschel

Anton Heller

Hardy Herold

Richard Goetze

Thomas Lehmann

Michael Tobias Zarka

Arndt Schlosser

Stephan Kaiser

Bernhard Glaser

Armin Hoffmann

Gerhard Kögler

Jessica Seidel

Holger Bienerth

Marion Killat

Karl Ernst Fickert

Peter Weiler

Peter Brandmueller

Peter Raidt

Stephan Karpfhammer

Herbert Pr&ouml;bstl

Mihai Gurau

Rene Gräwe

Spray dried homogeneous mixtures of a high molecular mass flocculating agent, a base polymer dispersion, and a protective colloid are useful for homogenously stabilizing mixtures such as dust, sand, and/or soil and produce a stabilized composition of high strength.

Polymer powder compositions which can be redispersed in water

Stable preparations of composite particles based on organic polymer and inorganic particles contain, as the organic polymer, an addition polymer containing moieties derived from polymerization of an unsaturated carboxylic acid in addition to vinyl ester, (meth)acrylic ester, olefin, vinyl aromatic, and/or vinyl halide monomers.

Composite particles with organic and inorganic domains

The invention relates to a composite heat insulation system, comprising an insulating layer, optionally a reinforcing layer, which is applied to the insulating layer, and a cover layer, which is applied to the insulating layer or, if present, to the reinforcing layer, characterized in that the cover layer contains composite particles, wherein the composite particles contain at least one organic polymer and at least one inorganic solid, wherein the weight percentage of inorganic solid is 15 to 40 wt %, with respect to the total weight of organic polymer and inorganic solid in the composite particle.

Composite heat insulation system

Water-redispersible polymer powders with improved characteristics in building materials are prepared using a drying aid which is a polyvinyl alcohol copolymer also containing vinyl ester monomers and specific comonomers.

Dispersion powder composition containing vinyl alcohol copolymerisate

Insulating plasters and insulated molded panels produced by molding without input of heat contain closed or open celled light weight bodies or mixtures thereof, and at least one binder composed of composite particles containing both an organic polymer and from 15 to 50 weight percent of inorganic solid.

Porous molded body in the form of an insulating plaster layer or an insulating panel

The invention relates to coated support means for fracking mining methods, containing an inorganic substrate material and a coating containing polymers of one or more ethylenically unsaturated monomers from the group containing vinyl esters of unbranched or branched alkyl carboxylic acids with 1 to 15 C atoms, methacrylic acid esters and acrylic acid esters of alcohols with 1 to 15 C atoms, vinyl aromatics, olefins, dienes and vinyl halides, characterised in that the polymers are obtained by means of radical-initiated polymerisation in an aqueous medium, wherein 0.5 to 20 wt. % of ethylenically unsaturated and silane group-containing monomers are copolymerised, in relation to the total weight of the monomers.

Coated proppants for fracking extraction methods

The present invention relates to aqueous dispersions or polymer powders which are redispersible in water, based on a) 2-ethylhexylacrylate, b) n-butylacrylate, c) one or more ethylenically unsaturated monomers, the homopolymer of which has a glass transition temperature Tg of &#x2265;50&#xb0; C., d) optionally one or more ethylenically unsaturated monomers containing acid groups, e) optionally one or more ethylenically unsaturated monomers containing silane groups and f) optionally one or more additional ethylenically unsaturated monomers which are different to the aforementioned monomers, characterised in that the polymers are based on 2-ethylhexylacrylate from 60 to 99 wt % and on n-butylacrylate from 1 to 40 wt %, each relative to the total weight of ethylhexylacrylate a) and n-butylacrylate b).

Polymers for dirt-repellent coatings

Modified water soluble polymer crosslinking agents can be used by themselves or in combination with conventional crosslinking agents, other crosslinkable base polymers, and/or hardeners. The dried composition is redispersible in water prior to crosslinking, but is stable to water after crosslinking, also offering improved stain resistance.

Use of modified water-soluble polymers as crosslinking auxiliary agents

Water-redispersible polymer powders having a high proportion of base polymer are prepared by spray drying a base polymer dispersion, employing as a spraying aid, a hybrid copolymer prepared by polymerizing an ethylenically unsaturated monomer in the presence of a water soluble polymer.

Use of hybrid copolymers as protective colloids for polymers

Polyvinyl alcohol-stabilized polymers in mineral building material compositions, contain one or more polyvinyl alcohols comprising one or more tertiary amine groups or one or more quaternary ammonium groups.

Mineral construction material based on polyvinyl-alcohol-stabilized polymerisates

The invention relates to methods for producing modified composite particles by A) mixing one or more finely divided inorganic solids and one or more organic polymers in a solvent or a mixture of several solvents, wherein finely divided inorganic solids are fixed to organic polymers and composite particles are thus formed. The organic polymers are based on a) one or more ethylenically unsaturated monomers having one or more additional functional groups selected from the group comprising carboxylic acid groups or derivatives thereof, silane groups, sulfonic acid groups, sulfate groups, phosphate groups, phosphonate groups, isocyanate groups, amine groups, quaternized amine groups, hydrazine groups, epoxy groups, ether groups, hydroxy groups, or CO groups, and b) one or more ethylenically unsaturated monomers which are different from monomers a), characterized in that subsequently B) one or more ethylenically unsaturated monomers are polymerized in the presence of the composite particles from step A).

Modified composite particles

The invention relates to silane modified additives obtained by condensation of one or a plurality of silanes of the general formula (RO)RSi(RX)(1), wherein R is an optionally substituted alkyle, aryle or alkoxyalkyl radical with 1 to 10 carbon atoms or hydrogen, Ran optionally substituted hydrocarbon radical with 1 to 12 carbon atoms or hydrogen, Ran optionally substituted alkylene radical with 1 to 20 carbon atoms, wherein methylene units that are not adjacent to one another can be substituted by groups &#x2014;O&#x2014;, and X is bound to Rvia a covalent bond and stands for an amino radical NHR, an epoxy radical CR(O)CRR, an urethane radical NR&#x2014;C(&#x2550;O)OR, an urea radical NR&#x2014;C(&#x2550;O)NRR, a phosphorous acid radical P(&#x2550;O)(OH), an anhydride radical C(&#x2550;O)O(O&#x2550;)CRor a carbon acid radical, wherein Ris hydrogen or an optionally substituted alkyle, aryle or amino alkyle radical with 1 to 10 carbon atoms, R, R, Rhydrogen or an optionally substituted alkyle or aryle radical with 1 to 10 carbon atoms, wherein the respective radicals R, R, R, R, Rand Reach obtain their values independently from each other, and n takes on the value 0, 1, 2, or 3, in an aqueous solvent by mixing with one or a plurality of water solvent polymers, wherein the content of water soluble polymers is &#x2267;15 wt. %, based on the dry weight of the silane modified additives, and optionally drying of the thus obtained aqueous mixture.

Silane-modified additives and silane-modified polymer compounds

The object of the invention are methods for producing composite particles, characterized in that &#x3b1;) one or more silicon compounds of the general formula: (RO)SiR(1), wherein R denotes an optionally substituted alkyl or aryl residue having 1 to 20 carbon atoms or a hydrogen atom, R1 denotes an optionally substituted hydrocarbon residue or a hydrogen atom, and n assumes a value of 1 to 4, or &#x3b2;) one or more condensation products of the silicon compounds of formula (1) are condensed in the presence of one or more soluble polymers in a solvent or a mixture of multiple solvents, wherein said soluble polymers are obtainable by radically initiated polymerization of a) one or more ethylenic unsaturated monomers having one or more further functional group selected from the group comprising carboxyl groups or the derivatives thereof, silane, sulfonic acid, sulfate, phosphate, phosphonate, isocyanate, amine, quaternized amine, hydrazine, epoxy, ether, hydroxyl, or CO groups, and b) one or more ethylenic unsaturated monomers selected from the group comprising vinyl esters of carboxylic acids having 1 to 15 C atoms, methacrylic acid esters or acrylic acid esters of carboxylic acids with branched or unbranched alcohols having 1 to 15 C atoms, olefins and dienes, vinyl aromatics and vinyl halides, and wherein condensation products thus formed of said silicon compounds &#x3b1;) or condensation products &#x3b2;) or the condensation products thereof are fixed on one or more soluble polymers.

Method for producing composite particles

Composite particles obtained by converting a) one or more inorganic oxide particles having an average diameter of &#x3c;1000 nm, b) one or more organic polymers, and c) one or more coupling reagents, the oxide particles a) and organic polymers b) being linked by units of coupling reagents c), wherein one or more polymers of &#x3b1;) one or more ethylene unsaturated monomers selected from vinyl esters of carbolic acids having 1 to 15 C atoms, methacrylic acid esters or acrylic acid esters of carbolic acids having unbranched or branched alcohols having 1 to 15 C atoms, and olefins, vinyl aromatics, and vinyl halogenides, and &#x3b2;) one or more ethylene unsaturated carbolic acids having 3 to 11 C atoms, and optionally &#x3b3;) one or more monomers comprising at least two ethylene unsaturated groups, and optionally &#x3b4;) one or more further ethylene unsaturated monomers are used as the organic polymers b).

Composite particles having organic and inorganic domains

The invention relates to highly transparent organofunctional silicone copolymers, being self-dispersible in water without emulsifiers or protective colloid, being obtained by radically initiated solution polymerization of a) one or more ethylenically unsaturated organomonomers, and b) one or more siliconmacromeres, characterized in that c) one or more water soluble comonomeres are copolymerized in an organic solvent or solvent mixture.

Growing community of inventors

Burgkirchen, Germany

Abdulmajid Hashemzadeh