USE OF POLY(OXYALKYLENE)OXY- AND/OR POLY(OXYALKYLENE)AMINOALKYLTRIALKOXYSILANES AS DISPERSANTS

摘要

The present invention relates to the use of poly (oxyalkylene) oxy- and / or poly (oxyalkylene) aminoalkyltrialkoxysilanes of the general formula (I) as dispersants for aqueous suspensions composed of aggregates and hydraulic binders, / RTI The present invention also relates to a process for preparing alkyltrialkoxysilanes, and to such alkyltrialkoxysilanes. [Symbols and indicators in the general formula (I) have the following definitions: -X- is -O- or -N (R ⁴ ) _2- a-; -Y- is -CH ₂ - and; -Z- is -O- (CH ₂ ) _d -C (R ⁵ ) _2-c -; a is 1 when -X- = -O- and 1 or 2 when -X- = -N (R ⁴ ) _2-a -; b is 0 or 1; c is 0, 1 or 2; d is 0 or 1; m is independently selected from integers from 1 to 6; p is a number from 7 to 200; R ¹ is the same or different and is selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl and phenyl; R ² is H or methyl; R ³ , R ⁴ , and R ⁵ are each the same or different and independently selected from the group consisting of H and linear or branched C ₁ -C ₆ -alkyl; R ⁶ is the same or different and is independently selected from the group consisting of H, methyl and ethyl; R ⁷ is selected from the group consisting of H, linear or branched C ₁ -C ₆ -alkyl, linear or branched C ₁ -C ₁₀ -alkanoyl, and C ₆ -C ₁₀ -aryloyl.