Wacker Chemie Ag

Consortium Fur Elektrochemische Industrie Gmbh

Other

Consortium F&uuml;r Elektrochemische Industrie Gmbh

Consortium F{umlaut Over (u)}r Elektrochemische Industrie Gmbh

Elke Fritz-Langhals

Richard Weidner

Johannes Freudenreich

Juergen Stohrer

Christian Ochs

Norbert Hampp

Anton Candussio

Uwe Scheim

Jürgen Stohrer

Hermann Petersen

Jens Cremer

Peter Jutzi

Alfred Popp

J&uuml;rgen Stohrer

Manfred Amann

Steffen Jungermann

Jürgen Oliver Daiss

Michael Wohlschlager

Sotirios Kneissl

Christian Brüninghaus

Sven Werge

Phillip Piroutek

Alkyl-silicates and alkyl-silicate-containing organosilicon compounds. The alkyl-silicate-containing organosilicon compound includes at least 90% by weight, preferably at least 95% by weight, of alkyl silicates of average formula (I)[SiO][(RO)SiO][(RO)SiO]'[(RO)SiO][(RO)(RO)SiO]′[(RO)SiO]″[(RO)SiO][(RO)(RO)SiO]′[(RO)(RO)SiO]″[(RO)SiO]d′″  (I).Where the radicals Rare each independently selected from radicals that meet at least one of the following conditions: (a) where Ris a substituted or unsubstituted, C-Chydrocarbon radical that is branched at the α-carbon atom, (b) where Ris a substituted or unsubstituted, C-Chydrocarbon radical that is doubly branched at the β-carbon atom, and/or (c) where Ris an unsubstituted or alkyl-substituted cyclopentyl, cyclohexyl or cycloheptyl radical having a total of not more than 9 carbon atoms. Where the radicals Rare each independently selected from (i) hydrogen, (ii) methyl radical, and (iii) ethyl radical.

Alkyl silikate

Bicyclic guanidines are prepared by reacting dialkylenetriamines with dialkylcarbonates in the presence of a silane of the formulaSi(OR)R  (IV)and/or their partial hydrolysates, with the proviso that contain minimally one unit Rwhich is monovalent optionally substituted hydrocarbon radial with 3 to 10 carbon atoms.

Process for preparing bicyclic guanidines

Aminopropylalkoxysilanes of the formulaHN&#x2014;CRR&#x2014;CHR&#x2014;CH&#x2014;SiRR(OR)&#x2003;&#x2003;I,are synthesized by hydrosilylating silazanes of the formulae and mixtures thereof, in the presence of a catalyst containing rhodium and/or iridium compounds, and then reacted with alcohol to form an aminopropylalkoxysilane.

Method for preparing aminopropylsilanes

Preparation of siloxanes in the presence of cationic silicon (II) compounds

The invention relates to a hydrosilylatable mixture M containing: (A) a compound with at least one hydrogen atom directly bonded to Si, (B) a compound containing at least one carbon-carbon multiple bond, and (C) a compound containing at least one cationic Si(II) group. The invention also relates to a method for hydrosilylating the mixture M.

Noble metal-free hydrosilylatable mixture

The invention relates to a method for producing cationic silicon (II) compounds of general formula I(RSi)HA&#x2003;&#x2003;(I)

Cationic silicon (II) compounds and method for the production thereof

The present invention relates to a method for producing amino acid group-containing organosilicon compounds (O), wherein the epoxy group-bearing organosilicon compounds are reacted with a stoichiometric excess of amino acids or the salts thereof in the presence of an alcohol.

Method for producing organosilicon compounds having amino acid groups

The object of the invention is therefore to provide a method for the preparation of amino-functional polyorganosiloxanes, in which (A) organosiloxanes containing Si&#x2014;OH groups are reacted with (B) at least stoichiometric amounts of monoalkoxy(aminoalkyl) silanes with respect to the Si&#x2014;OH groups, wherein catalytically active additives selected from acid, base or metal-organic compound are used in amounts of less than 0.1 ppm acid, less than 30 ppm base and less than 0.4% metal-organic compound.

Method for producing organosilicon compounds having amino groups

(Meth)acrylate-functionalized silicon compounds are easily prepared by the reaction of a (meth)acryloyl-functionalized chlorosilane with an organosilicon compound having silicon-bonded hydroxy groups. The carbon atom adjacent to the resulting O&#x2014;Si linkage is bonded to at least one further carbon, rendering the product stable to hydrolysis despite the C&#x2014;O&#x2014;Si linkage.

Organosilicon compounds having (meth)acrylate groups and a process for preparation thereof

The invention relates to a method for producing amino-functional polyorganosiloxanes, wherein (A) organosiloxanes which contain Si&#x2014;OH groups are reacted with (B) at least stoichiometric quantities of mono-alkoxy(amino-alkyl)silanes, with respect to the Si&#x2014;OH groups, (C) in the presence of at least one acid as a catalyst.

Method for producing organosilicon compounds which have amino groups

Aminoalkylalkoxysilanes are prepared from halo(haloalkyl)silanes in the simultaneous presence of ammonia or primary organic amine and alcohol.

Method for producing aminoalkylalkoxysilanes

A method for producing (hydroxymethyl)polysiloxanes of the general formula I(SiO)(RSiO)(RSiO)(RSiO)[O&#x2014;(SiR&#x2014;X&#x2014;Y&#x2014;)SiR&#x2014;CH&#x2014;OH][OH]&#x2003;&#x2003;formula I,includes reacting silanol-containing organosiloxanes of the general formula II(SiO)(RSiO)(RSiO)(RSiO)[OH]&#x2003;&#x2003;formula IIwith cyclic or acyclic compounds that include at least one unit of the general formula IIIZ&#x2014;[O&#x2014;CH&#x2014;SiR]&#x2014;Y&#x2003;&#x2003;formula III

Method for producing (hydroxymethyl)polysiloxanes

Organosilicon compounds bearing carboxylic acid groups are easily and economically replaced in high yield by oxidation of a carbinol-functional organosilicon compound with an oxidizer in the presence of a moderator at a pH&#x2267;3. Carboxyl-functional organopolysiloxanes highly useful as textile softeners may be obtained by this method.

Method for the production of organosilicon compounds comprising carboxy radicals

Organosilicon compounds bearing keto or aldehyde groups are easily prepared in high yield by oxidation of a carbinol-functional precursor by an oxidizing agent in the presence of a nitrogen-containing free radical mediator which contains aliphatic, cycloaliphatic, heterocyclic, or aromatic NO&#x2014;, NOH&#x2014;, or H&#x2014;N&#x2014;OH group. The oxidation may be conventional, i.e. using air, oxygen, or other oxidant, may be electrochemical, or enzymatic.

Method for producing carbonyl group-containing organosilicon compounds

A process for preparing alkynecarboxylic acids includes the oxidation of an alkyne alcohol with a hypohalite in the presence of a nitroxyl compound at a pH of greater than 7 with continual addition of the alkyne alcohol and of the hypohalite to the reaction mixture.

Growing community of inventors

Ottobrunn, Germany

Elke Fritz-Langhals