Silane treatment amino

Property Silica 35wt% -Cs- 50wt% Molding resin powder 30wt% -c=> 40wt% HO- 50wt% -o Epoxy silane treatment Amino silane treatment... 

Methods of filler pretreatment silanes including amino- and mercaptosilanes treatment is more common with silica and clays... 

There are many versions of clays (hydrated aluminum silicate) available including soft clay, hard clay, air floated, water washed, calcined, and surface-treated versions. Surface treatments include stearates, mercapto-silane, vinyl silane, and amino silane. Select the silane treatment that is compatible with the cure system to be used. Clay may be used in large quantities, is inexpensive, easy to incorporate, calender or extrude and provides some reinforcement to NBR compounds. 

Treatment of water-washed hard china clays with silanes with pendant amino or mercapto groups enables them to give improved reinforcement to rubber compounds. Silane-treated clays give compounds with lower viscosity, considerably higher modulus and tensile strength and lower compression set than compounds containing untreated clays. 

In addition to the dihydro compounds discussed above, the triethylsilane/trifluoroacetic acid reduction system can also be used to prepare tetrahydro pyrimidine derivatives, especially when dichloromethane is used as the solvent <2004TL2107>. Thus, treatment of 2-amino-5-phenylpyrimidine 398 with 2.5 equiv of triethylsilane and 5 equiv of TEA in dichloromethane at room temperature gave a quantitative yield of the tetrahydro derivative 399, whereas only a dihydro derivative was obtained with 10 equiv of the silane in the absence of dichloromethane <2004TL2107>. 

The silane surfaces 1 and 2 display the same XP spectra before and after treatment with either octadecanoic acid or octadecanamine, within experimental error. The carboxylic surface 3 and the amino surface 5 exhibit XP spectra very similar to those of surfaces obtained by treating them with octadecanoic acid and octadecanamine, respectively. 

A typical embodiment for the porous layer technology is described in several patents and patent applications, e.g., a US patent application in 2006. This patent application describes a method for the preparation of silicon dioxide dispersions wherein the surface of the silicon dioxide is modified by treatment with the reaction products of a compound of trivalent aluminum with amino-organo-silane. The invention relates to recording sheets for inkjet printing having such a dispersion incorporated in the porous inkreceiving layer. Another US patent describes the preparation of nanoporous alumina oxide or hydroxide which contains at least one element of the rare earth metal series with atomic numbers 57 to 71. 

Summary Treatment of geminal silyldiamines with monohalo silanes leads to the formation of 1-amino-1,3-disilazanes. Mono-NH-SiF-functional cyclodisilazanes can be isolated by ring closure of their lithium derivatives in the reaction with trifluorosilanes. Lithium salts of these cyclodisilazanes react with H-acidic compounds like alcohols as amides and with unsaturated compounds like aldehydes as silaimines. 

We investigated the use of the molding resin powder (<150 m) as a filler for construction materials composed of bisphenol A type epoxy resin and amine type hardener, and compared the material properties with those produced with a silica powder filler (<150 fi m). Furthermore, the effect of surface treatment of the molding resin powder on these properties was examined by using epoxy or amino silane coupling agents, which were added at lwt% to the molding resin powder and heated at 100°C for 1 hr. 

Silanes used for treatment dimethyldiethoxy silane, 3-(methacryloxy) propyltrimethoxy silane, vinyl triethoxy silane, amino silane. Silane coating was estimated to be 0.2 wt%. Treatment with epoxy silane has been used followed by PS-maleic anhydride grafting through amine spacer. 

The treatment of an amino acid per se by means of halogenoorganylsilanes cannot be accomplished, since the formation of dipolar ions eNH3CHRCOOe impedes any reaction with halogenated silanes. Hence, a viable approach is to esterify the amino acid first to 474 and then convert it in the presence of a HC1 acceptor into the corresponding N-TMS-amino acid (475) (equation 225)240,241. Another method is to employ the sodium salts of amino acids (476) which yields iV-TMS-amino acid TMS-ester (477) (equation 226)242. 

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