Evonik Degussa Gmbh

Degussa Aktiengesellschaft

Evonik Operations Gmbh

Andre Hasse

Karsten Korth

Oliver Klockmann

Philipp Albert

Hans-Detlef Luginsland

Caren Roeben

Alexander Koepfer

Frank Forster

Ingo Kiefer

Reimund Pieter

Susann Witzsche

Ulrich Deschler

Manuel Friedel

Roland Krafczyk

Ralph Moser

Stefanie Mayer

Juergen Heidlas

Sebastian Rosenstingl

Dirk Laur

Hans-Detlef Lughinsland

Melanie Mayer

Inge Kiefer

Michael Radcziwill

Relmund Pieter

Katharina Marie Paulus

Alexander Köpfer

Hannes Jürgens

Florian Danieli

Caren RÖBEN

The invention relates to silane mixtures comprising a silane of the formula I(R)(R)Si&#x2014;R&#x2014;(S&#x2014;R)&#x2014;S&#x2014;R&#x2003;&#x2003;(I)and a silane of the formula II(R)(R)Si&#x2014;R&#x2014;Si(R)(R)&#x2003;&#x2003;(II)where the molar ratio of silane of the formula I to silane of the formula II is 15:85-90:10. The silane mixture according to the invention can be prepared by mixing the silanes of the formula I and silanes of the formula II.

Silane mixtures and process for preparing same

The invention relates to silane mixtures comprising a silane of the formula I((R)(R)Si&#x2014;R&#x2014;SH&#x2003;&#x2003;(I)and a silane of the formula II(R)(R)Si&#x2014;R&#x2014;(S&#x2014;R)&#x2014;Si(R)(R)&#x2003;&#x2003;(II)where the molar ratio of silane of the formula I to silane of the formula II is 20:80-85:15. The silane mixture according to the invention can be prepared by mixing the silanes of the formula I and silanes of the formula II.

The invention relates to silane mixtures comprising a silane of the formula I(R)(R)Si&#x2014;R&#x2014;(S&#x2014;R)&#x2014;S&#x2014;R&#x2003;&#x2003;(I)and a silane of the formula II(R)(R)Si&#x2014;R&#x2014;S&#x2014;R&#x2014;S&#x2014;R&#x2014;Si(R)(R)&#x2003;&#x2003;(II)where the molar ratio of silane of the formula I to silane of the formula II is 15:85-90:10. The silane mixture according to the invention can be prepared by mixing the silanes of the formula I and silanes of the formula II.

The invention relates to silane mixtures comprising a silane of the formula I(R)(R)Si&#x2014;R&#x2014;(S&#x2014;R)&#x2014;S&#x2014;(R&#x2014;S)&#x2014;R&#x2014;Si(R)(R)&#x2003;&#x2003;(I)and a silane of the formula II(R)(R)Si&#x2014;R&#x2014;(S&#x2014;R)&#x2014;S&#x2014;R&#x2014;Si(R)(R)&#x2003;&#x2003;(II)where the molar ratio of silane of the formula I to silane of the formula II is 19:81-81:19. The silane mixture according to the invention can be prepared by mixing the silanes of the formula I and silanes of the formula II.

Silane mixtures and processes for preparation thereof

The invention relates to silane mixtures comprising a silane of the formula I(R)(R)Si&#x2014;R&#x2014;(S&#x2014;R)&#x2014;S&#x2014;R&#x2003;&#x2003;(I)and a silane of the formula II(R)(R)Si&#x2014;R&#x2014;(S&#x2014;R)&#x2014;S&#x2014;R&#x2014;Si(R)(R)&#x2003;&#x2003;(II)where the molar ratio of silane of the formula I to silane of the formula II is 20:80-90:10. The silane mixture according to the invention can be prepared by mixing the silanes of the formula I and silanes of the formula II.

Mercaptosilanes are disclosed of the formula I wherein Ris an alkyl polyether group &#x2014;O&#x2014;(R&#x2014;O)&#x2014;R. They are prepared by a procedure in which a silane of the formula II is subjected to a catalyzed reaction with an alkyl polyether R&#x2014;H, R&#x2014;OH being split off, the molar ratio of the alkyl polyethers R&#x2014;H to the silane of the formula II is at least 0.5 and R&#x2014;OH is separated off from the reaction mixture continuously or discontinuously. They can be used in shaped articles.

Mercaptosilanes

Mixtures of silicon-containing coupling reagents comprising (mercaptoorganyl)alkylpolyethersilanes containing silanol groups and (mercaptoorganyl)alkylpolyethersilanes free of silanol groups in a weight ratio of from 5:95 to 95:5. The mixtures can be prepared by transesterification and hydrolysis. The mixtures can be used in rubber mixtures.

Mixtures of silicon-containing coupling reagents

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.

A rubber mixture which exhibits reliable processability contains (A) a rubber or mixture of rubbers, (B) a filler, (C) at least one organosilane, (D) a thiuram accelerator, and (E) a nitrogen-containing co-activator. A weight ratio of thiuram accelerator (D) to nitrogen-containing co-activator (E) is equal to or greater than 1.

Mercaptosilanes and derivatives thereof

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

A composition containing organosilicon compounds having the formula I and/or II wherein R is ethyl, Ris a mixture such that the proportion of one component of the mixture is 10 to 50 mol % and is the same or different C-Cbranched or unbranched monovalent alkyl, and Ris a branched or unbranched, saturated or unsaturated, aliphatic, aromatic or mixed aliphatic/aromatic divalent C-Chydrocarbon is produced by reacting silanes having the formula III with mixtures of alcohols having the general formula R&#x2014;OH, with elimination of R&#x2014;OH, and R&#x2014;OH is continuously separated off from the reaction mixture by distillation. The organosilicon compounds can be used in rubber compounds.

Organosilicon compounds, process for their production and their use

The invention relates to rubber mixtures, comprising: (A) at least one rubber, (B) at least one oxidic filler and (C) at least one (haloorganyl)alkylpolyethersilane of the general formula (X)(X')(X&#x2033;)Si&#x2014;R-Hal. The rubber mixtures can be used for production of mouldings.

Rubber mixtures are disclosed comprising (A) at least one styrene-butadiene rubber, (B) at least one filler and (C) at least one polysulphidic organo(alkyl polyether silane) of the general formula I[(X)(X')(X&#x2033;)Si&#x2014;R]&#x2014;S&#x2003;&#x2003;I.The mixtures are prepared by mixing at least one styrene-butadiene rubber, and at least one filler and one polysulphidic organo(alkyl polyether silane) of the formula (I). The rubber mixtures can be used for the production of mouldings.

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Linnich, Germany

Andre Hasse