54586-78-6Relevant academic research and scientific papers
(Trifluorosilyl)methyl 2-methylacrylate: Synthesis, experimental and theoretical studies
Aksamentova, T. N.,Bolgova, Yu. I.,Borodina, T. N.,Emel'yanov, A. I.,Grebneva, E. A.,Pozdnyakov, A. S.,Smirnov, V. I.,Trofimova, O. M.
, (2021/12/20)
The novel stable organosilicon compound containing pentacoordinated silicon atom, named as (trifluorosilyl)methyl 2-methylacrylate, was synthesized and fully characterized including single-crystal X-ray diffraction. The asymmetric unit of the title compound contains two independent molecules, one of which adopting the s-cis configuration and the other has the s-trans configuration with respect to the C[dbnd]O and C[dbnd]C bonds. In the crystal, conformers form cis- and trans-dimeric pairs due to tetrel-bonding interaction and hydrogen bonds C[sbnd]H··· F. Energetic and geometric characteristics for these dimers were calculated by DFT methods at M06-2X/6-311G(d,p) level of theory using QTAIM analysis. The calculations in the polar medium (DMSO) for two dimeric fragments of crystal packing were performed with Onsager self-consistent reaction field method.
A α - substituted propylene acyloxy methyl trialkoxy silane preparation method
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Paragraph 0029-0032; 0039-0042; 0047-0054, (2018/04/26)
The invention relates to a preparation method of alpha-substituted acryloyloxy methyltrialkoxy silane, which comprises the following steps: (1) uniformly mixing an acrylic compound, organic base or ammonia gas, a polymerization inhibitor and an organic solvent, adding a phase transfer catalyst and chloromethyl methyltrialkoxy silane, and reacting for 1-10 hours at 70-110 DEG C; and (2) after the reaction, adding petroleum ether 1-2 times the reaction liquid in volume into the reaction liquid, stirring for 20-40 minutes, filtering to remove the solid, performing atmospheric distillation of the filtrate to remove the organic solvent methylbenzene or benzene, petroleum ether and redundant organic base, and performing reduced-pressure distillation to obtain the alpha-substituted acryloyloxy methyltrialkoxy silane. In the method provided by the invention, by adding the organic base or ammonia gas not generating water, the energy consumption can be reduced, and the production steps are simplified.
COSMETIC TREATMENT METHOD COMPRISING THE APPLICATION OF A COATING BASED ON AN AEROGEL COMPOSITION OF LOW BULK DENSITY
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Paragraph 0068, (2014/02/15)
The present invention relates to a cosmetic treatment method comprising the formation of a coating on keratin fibres characterized in that it comprises: 1) the preparation of an aerogel precursor composition comprising:—at least one organic solvent chosen from acetone, C1-C4 alcohols, C1-C6 alkanes, C1-C4 ethers, which may or may not be perfluorinated, and mixtures thereof and at least one precursor compound that contains:—at least one atom chosen from silicon, titanium, aluminium and zirconium,—at least one hydroxyl or alkoxy function directly attached to the atom chosen from silicon, titanium, aluminium and zirconium by an oxygen atom, and,—optionally an organic group directly attached to the atom chosen from silicon, titanium, aluminium and zirconium by a carbon atom, 2) the removal of the solvent or solvents resulting in the formation of an aerogel composition having a bulk density less than or equal to 0.35 g/cm3, 3) the application to the keratin fibres of the aerogel composition resulting from step 2) or of the aerogel precursor composition resulting from step 1). Advantageously, the molar ratio between the precursor compounds and the solvent is at most 1/20.
Process for stabilizing unsaturated organosilicon compounds
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Page 4-5, (2008/06/13)
A process for stabilizing organosilicon compounds bearing unsaturated groups during their preparation, distillation, and/or storage, the organosilicon compounds bearing unsaturated groups having been obtained by reacting a haloalkylsilane with a salt of an unsaturated organic acid, by adding one or more compounds of the formula I wherein R1 and R2 are identical or different linear or branched C1-20 alkyl, and the radicals R3 are identical or different and are hydrogen or linear or branched alkyl radicals having 1-20 carbon atoms.
The Hydrolysis/Condensation Behaviour of Methacryloyloxyalkylfunctional Alkoxysilanes: Structure-Reactivity Relations
Altmann, Stefan,Pfeiffer, Juergen
, p. 1081 - 1092 (2007/10/03)
Various methacryloyloxymethylalkoxysilanes have been synthesized by nucleophilic substitution reactions starting from chloromethylalkoxysilanes under phase transfer catalysis conditions. The compounds thus obtained show an exceptionally high degree of reactivity with regard to hydrolysis and condensation both under acidic as well as under basic conditions compared to the established 3-methacryloyloxypropyltrimethoxysilane. A mechanistic model for this high reactivity by intramolecular activation is discussed.
