Evonik Degussa Gmbh

Degussa Aktiengesellschaft

Evonik Operations Gmbh

Andre Hasse

Ingo Kiefer

Karsten Korth

Susann Witzsche

Oliver Klockmann

Philipp Albert

Jaroslaw Monkiewicz

Stefan Bade

Markus Rudek

Burkhard Standke

Ulrich Deschler

Manuel Friedel

Reimund Pieter

Torsten Peterle

Julia Keck

Reiner Störger

Christian Springer

Jörg Schmidt

Inge Kiefer

Stefan Lotter

Jörg Kiefer

Claudia Drescher

Burkhard John

Novel epoxy-functional alkoxysilanes have, for example, formulae II, III, IV, V, and VI. 

Epoxy-functional alkoxysilanes, method for the production and use thereof

A process can prepare a 3-glycidyloxypropylalkoxysilane of formula (I), (R')O&#x2014;(CH)&#x2014;Si(OR)(I), where R groups are independently a methyl or ethyl group and R&#x2032; represents an HC(O)CHCH&#x2014; group. The process includes reacting (i) a functionalized alkene of formula (II), (R&#x2032;)O&#x2014;CH(II), where R&#x2032; represents an HC(O)CHCH&#x2014; group, with (ii) at least one hydroalkoxysilane of formula (III), HSi(OR)(III), where R groups are independently a methyl or ethyl group. The reacting takes place in the presence of (iii) a Karstedt catalyst or a catalyst having hexachloroplatinic acid as a homogeneous catalyst, and (iv) 2-ethylhexanoic acid, isononanoic acid, or both. The process further includes obtaining a product of the reacting.

Process for preparing 3-glycidyloxypropyltrialkoxysilanes

The invention relates to a process for preparing silicon-containing azodicarbamides of the general formula (I) (R)(R)Si&#x2014;R&#x2014;NH&#x2014;C(O)&#x2014;N&#x2550;N&#x2014;C(O)&#x2014;NH&#x2014;R&#x2014;Si(R)(R)(I), by reaction of azobiscarboxy compounds of the general formula II R&#x2014;X&#x2014;C(O)&#x2014;N&#x2550;N&#x2014;C(O)&#x2014;X&#x2014;R(II) with aminosilanes of the general formula III (R)(R)Si&#x2014;R&#x2014;NH(III).

Process for preparing silicon-containing azodicarbamides

Rubber mixtures, including at least one rubber, a filler, an organosilicon compound of the formula I one rubber accelerator and one co-accelerator. The rubber mixtures are prepared by mixing at least one rubber, a filler, an organosilicon compound of the formula I, one rubber accelerator and one co-accelerator. The rubber mixtures can be used for production of moldings. Also disclosed is a process for preparation of the organosilicon compound of the formula I via transesterification.

Rubber mixtures

Rubber mixtures containing at least one rubber and an organosilicon compound of the general formula (I) (Q-)G-Si(&#x2014;O&#x2014;CXX&#x2014;CXX&#x2014;)N. The rubber mixture is prepared by mixing at least one rubber and an organosilicon compound of the formula (I). The rubber mixtures can be used for the production of moldings.

The invention relates to a method for producing organosilanes of general formula I,[R(R)(R'O)Si&#x2014;R&#x2033;&#x2014;]S&#x2003;&#x2003;Iby reaction of (halo-organo)alkoxysilanes of formula II,[R(R)(R&#x2032;O)Si&#x2014;R&#x2033;-Hal&#x2003;&#x2003;IIwith a sulfuring reagent, selected from alkaline hydrogensulfide, alkaline sulfide MeS, alkaline polysulfide MeSand any combination thereof and optionally additionally with sulfur and/or with HS in a solvent, the alkaline hydroxy content of all materials used being &#x3c;0.44 wt. %.

Method for producing organosilanes

The invention relates to organosilicon compounds, and to the ways in which they can be made and used.

Organosilicon compounds their preparation and their use

Process for preparing alkylpolyether-substituted mercaptosilanes of the general formula I,(X)(X')(X&#x2033;)Si(&#x2014;R&#x2014;SR)&#x2003;&#x2003;(I)and a Hazen colour number of &#x2266;250 mg Pt&#x2014;Co/L by reacting compounds of the general formula II,(X&#x2032;)(X&#x2033;)Si(&#x2014;R&#x2014;SR)&#x2003;&#x2003;(II)with m equivalents of the compounds of the general formula III,H&#x2014;O&#x2014;((CR)&#x2014;O&#x2014;)Alk&#x2003;&#x2003;(III)using a proton-donating co-catalyst and, if desired, a further catalyst, and separating off liberated X&#x2032;&#x2014;H from the reaction mixture.

Process for preparing alkylpolyether-substituted mercaptosilanes

Organosilicon compounds of the general formula I  

Growing community of inventors

Rheinfelden, Germany

Susann Witzsche