18030-67-6Relevant academic research and scientific papers
COSMETIC PREPARATION
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Page/Page column 14-16, (2010/02/15)
A cosmetic, wherein the cosmetic comprises tetraquistrimethylsiloxysilane represented by the formula (1)[(CH)SiO]Si The cosmetic has an excellent sensory properties and stability.
Recovery of trimethylchlorosilane from its azeotropic mixture with SiCl4
Voronkov,Baryshok,Kuznetsova
, p. 2091 - 2094 (2007/10/03)
Reaction of tetraethoxysilane with the azeotropic mixture Me3SiCl-SiCl4 in the presence of certain cyclic (tetrahydrofuran, dioxane) and acyclic (diethyl ether) ethers, ethanol, or dimethylformamide was studied with the aim of SiMe3Cl recovery.
Treatment of Tetraalkoxysilanes with Amberlyst 15 Cation-Exchange Resin in Presence of Hexamethyldisiloxane
Hasegawa, Isao,Sakka, Sumio
, p. 4313 - 4316 (2007/10/02)
Tetraalkoxysilanes were treated with Amberlyst 15 cation-exchange resin in hexamethyldisiloxane at 40 deg C in order to substitute the trimethylsilyl group for the alkyl group in a tetraalkoxysilane partially.Tetramethoxy-, ethoxy-, propoxy-, and butoxysilanes were used for the experiments.After the treatment, SiO4R(4-n)Xn (1 /= n /= 4, R = CH3, C2H5, n-C3H7, and n-C4H9, X = Si(CH3)3) were detected by gas chromatography-mass spectrometry.The degree of trimethylsilylation of tetraalkoxysilane changed with the molar ratio of hexamethyldisiloxane to tetraalkoxysilane and quantities of the reaction products in the system depended mainly on the ratio.
Preparation of Alkyl-substituted Partial Trimethylsilyl Silicates from Olivine
Kuroda, Kazuyuki,Koike, Tetsuhiro,Kato, Chuzo
, p. 1957 - 1960 (2007/10/02)
The direct trimethylsilylation reaction of olivine has yielded partial trimethylsilyl derivatives of ortho- and di-silicates whose unsilylated silanol groups have been esterified with the alcohol used as the organic solvent in the trimethylsilylating reagent.Gas chromatographic-mass spectroscopic measurements indicate the presence of the tri-, di-, and mono-alkyl-substituted trimethylsilyl derivatives of monosilicic acid in addition to the fully silylated monomeric derivative .Dimeric derivatives have also been detected which contain both the completely trimethylsilylated derivative and alcohol-esterified derivatives .The ratio of the esterified products varies with the volume of alcohol or water in the silylating reagent as well as the reaction time.
