18306-83-7Relevant academic research and scientific papers
Tuning cooperativity by controlling the linker length of silica-supported amines in catalysis and CO2 capture
Brunelli, Nicholas A.,Didas, Stephanie A.,Venkatasubbaiah, Krishnan,Jones, Christopher W.
, p. 13950 - 13953 (2012)
Cooperative interactions between aminoalkylsilanes and silanols on a silica surface can be controlled by varying the length of the alkyl linker attaching the amine to the silica surface from C1 (methyl) to C5 (pentyl). The linker length strongly affects the catalytic cooperativity of amines and silanols in aldol condensations as well as the adsorptive cooperativity for CO2 capture. The catalytic cooperativity increases with the linker length up to propyl (C3), with longer, more flexible linkers (up to C5) providing no additional benefit or hindrance. Short linkers (C1 and C2) limit the beneficial amine-silanol cooperativity in aldol condensations, resulting in lower catalytic rates than with the C3+ linkers. For the same materials, the adsorptive cooperativity exhibits similar trends for CO2 capture efficiency.
GENT FOR DYEING HAIR, CONTAINING AT LEAST ONE ORGANIC SILICON COMPOUND I
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, (2022/03/02)
The subject of the present application is an agent for coloring keratinous material, in particular human hair, which contains in a cosmetic carrier (a) at least one special organic silicon compound, and (b) at least one coloring compound. The present disc
ORGANOSILICON COMPOUND AND ITS PRODUCTION METHOD, COMPOUNDING AGENT FOR RUBBER, RUBBER COMPOSITION, AND TIRE
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, (2012/12/13)
A method for producing a sulfur-containing organosilicon compound capable of dramatically reducing hysteresis loss of the cured rubber composition and improving abrasion resistance and its production method are provided. A compounding agent for rubber containing the sulfur-containing organosilicon compound, a rubber composition prepared by blending such compounding agent for rubber, and a tire produced by using the cured rubber composition are also provided. The sulfur-containing organosilicon compound has a hydrolyzable silyl group, amino group, and mercapto group.
N,N'-bis(triethoxysilylmethyl)thiocarbamide and poly[N,N'-bis(silsesquioxanylmethyl)thiocarbamide S,S-dioxide]
Voronkov,Vlasova,Grigor'eva,Pozhidaev,Bol'shakova
, p. 1091 - 1093 (2007/10/03)
Condensation of (aminomethyl)triethoxysilane with thiocarbamide in the presence of catalytic amounts of ammonium sulfate was used to synthesize N,N-bis(triethoxysilylmethyl)thiocarbamide. The latter was brought into oxidative hydrolytic polycondensation with H2O2 to obtain poly[N,N'-bis(silsesquioxanylmethyl)thiocarbamide S, S-dioxide] whose properties were compared with the properties of poly[N,N'-bis(silsesquioxanylpropyl)thiocarbamide S,S-dioxide]. Both polymers in highly acidic media rather strongly absorb Ag(I), while at pH 7 they reduce most absorbed Ag+ to the metal. Their reaction with potassium permanganate involves reduction of Mn7+ to Mn4+. The first polymer is a less effective sorbent and redox agent than the second. 2005 Pleiades Publishing, Inc.
Process for the synthesis of organofunctional silanes using isatoic anhydride or derivatives thereof
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, (2008/06/13)
A process for the synthesis of organofunctional silanes having general formula (I), as well as the use of them is disclosed.
Process for the synthesis of organofunctional silanes using isatoic anhydride or derivatives thereof
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, (2008/06/13)
A process for the synthesis of organofunctional silanes having general formula (I), as well as the use of them is disclosed. STR1
