| abstract |
The present invention relates to the novel compound 3-glycidyloxypropyltri (-2-propylheptoxy) silane as such. A process for the preparation of a process for the preparation of a 3-glycidyloxypropyltrialkoxysilane having long-chain alkoxy groups of the general formula (I) or of general formula (II) with m = 1 or 2, n = 0 or 1, p = 3, 4, 5, 6, 7, 8, 9 or 10, in particular 3-glycidyloxypropyltri (2-ethylhexoxy) silane and 3-glycidyloxypropyltri (-2- propylheptoxy) silane, by reacting 3-glycidyloxypropyltrimethoxysilane or 3-glycidyloxypropyltriethoxysilane with a stoichiometric or excess amount of a longer chain alcohol of the C5 to C16 alcohol series, in the presence of titanium tetrabutoxide as catalyst heated to a temperature less than or equal to 225 ° C. with thorough mixing react, following the reaction, methanol or ethanol and excess educt alcohol are removed from the product mixture by distillation, preferably under reduced pressure, and the product is recovered.n n n The present invention also relates to correspondingly available products or compositions and their use for the functionalization of rubber and the use of the rubber in running surfaces for reducing the rolling resistance in tires. |