Phenyl triethoxysilane

Further improvements can be made to the performance of the HMS materials by preparing materials containing two different functional groups. By co-condensation of TEOS, aminopropyl trimethoxysilane and phenyl triethoxysilane, a templated material can be... 

After the reactive mixture has been introduced, it is kept in the reactor at 150-160 °C for 6-8 hours and sampled to determine the phenylethoxysi-lane content. The content of phenylethoxysilanes (equivalent to phenyl-triethoxysilane) should not be less than 65%. After the synthesis the reactive mixture is cooled to 40-60 °C by sending water into the jacket of the apparatus. The cooled mixture of phenylethoxysilanes, the so-called phenyl paste, is sent into hydrolyser 14 to hydrolytic cocondensation. 

Figure 16.14 summarizes the pyrene IJI3 results from a series of hybrid class II xerogels formed from phenyl-trimethoxysilane (P-TMOS), phenyl-triethoxysilane (P-TEOS), TMOS, TEOS, and seven different monoalkyl-trialkoxysilanes (Cn-TM(E) OS). These formulations were prepared using the ALHS and screened using the high throughput spectral acquisition system utilization of automated systems reduced... 

Adsorbed films of ethykriethoxysilane and vinyltriethoxy-silane were formed on silica and alumina by retraction from hydrocarbon solution and their wettabilities and water-stabilities determined. The vinyltriethoxysilane films were generally more oleophobic, more hydrophobic and more resistant to contact with water than the films formed by the ethyl analog. Neither adsorbate formed stable films on a-alumina. The addition of low molecular weight organic acids or bases to the adsorbate solution resulted in both the ethyl and vinyl compound forming hydrophobic and water-stable films on silica and ot-alumina. Films of p-chloro-phenyl-ft-ethyltrichloro, -trimethoxy, and -triethoxysilane were also studied and found to be water-stable and to have wettabilities characteristic of a surface comprised of closely-spaced p-chlorophenyl groups. 

Rhodium-siloxide complex [ (diene)Rh(p-OSiMe3) 2] (I) appeared to be a very effective catalyst of the hydrosilylation of various allyl ethers for example, hydrosilylation of allyl glycidyl ether, allyl butyl ether, allyl phenyl ether and allyl benzyl ether [9] proceeds almost quantitatively even at room temperature (Table 1). The hydrosilylation of allyl glycidyl ether by triethoxysilane leads to glycidoxypropyltriethoxysilane, which is a commercially important silane coupling agent. The reaction of allyl ethers with hydrosiloxanes catalyzed by I also occurs with very high yield (Table 2) [10]. The hydrosilylation products have applications in the cosmetic industry [11]. 

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