Evonik Degussa Gmbh

Compagnie Generale Des Etablissements Michelin

Torsten Peterle

Anke Blume

Jaroslaw Monkiewicz

Caren Roeben

Susann Witzsche

Juri Tschernjaew

Caren Röben

Stefan Bade

Sascha Erhardt

Markus Rudek

Andrea Korch

Kathrin Kunowa

Julia Keck

Catherine Mougin

Michael Klose

Claudia Drescher

Burkhard John

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

Azocarbonyl-functionalized silanes of formula I(R)(R)Si&#x2014;R&#x2014;NH&#x2014;C(O)&#x2014;N&#x2550;N&#x2014;R&#x2003;&#x2003;(I)and methods for their production are provided. The silanes of formula (I) are useful in rubber mixtures to provide moldings having improved tear-resistance.

Azocarbonyl-functionalized silanes

The invention relates to silane-modified silicas having a BET surface area of 40 to 155 m/g, a sulphur content between 0.05% and 25% by weight and a particle size d5 of &#x2265;4 &#x3bc;m, and d50 of &#x2265;16 &#x3bc;m. The silane-modified silicas are used in rubber mixtures.

Silane-modified silicic acid, method for the production and use thereof

The invention relates to mercaptosilane-polymer blends comprising at least one mercaptosilane of the general formula I and at least one polymer selected from the group of polypropylene, polyethylene and ethylene-vinyl acetate. They are produced by mixing the mercaptosilane of the general formula I with the polymer. They can be used in rubber mixtures.

Mercaptosilane polymer mixture

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Grenzach-Wyhlen, Germany

Torsten Peterle