Silanes aminopropyltriethoxysilane

Fig. 6 Common silanizing trialkoxysilanes that promote covalent DNA immobilization a 3-aminopropyltriethoxysilane (APTES) b 3-aminopropyltrimethoxysilane (APTMS) c 3-glycidoxypropyltrimethoxysUane (GOPS) d 3-mercaptopropyltrimethoxysilane (MPTS)...

Most moisture-curing silicones have good general adhesion to a variety of substrates. However, adhesion can be markedly improved with different combinations of silanes. The more common silane adhesion promoters are categorized as amine functional, eg, 3-aminopropyltrimethoxysilane [13822-56-5]y 3-aminopropyltriethoxysilane [919-30-2] y or IV-(2-aminoethyl)-3-aminopropyltrimethoxysilane [1760-24-3] as epoxy functional, eg, 3-glycidoxypropyltrimethoxysilane [2530-83-8] (2) and 2-3(3,4-epoxycyclohexyl)ethyltrimethoxysilane [3388-04-3] (3) as mercapto functional, eg, 3-mercaptopropyltrimethoxysilane [4420-74-0] or as methacrylate functional, eg, 3-methacryloxypropyltrimethoxysilane [2530-85-0] (4). 

In 1960 there were three commercial coupling agents a methacrylate-chrome complex (Volan ), vinyltriethoxysilane, and aminopropyltriethoxysilane. There was little evidence that Volan or vinyl silanes on glass actually copolymetized with unsaturated resins in composites. It was even more difficult to explain how Volan was almost as good as aminopropylsilanes in epoxy composites. There... 

Characterization of films of organofunctional silanes by TOFSIMS and XPS. Part I. Films of A/-(2-(vinylbenzylamino)-ethyl]-3-aminopropyltri-methoxysilane on zinc and y-aminopropyltriethoxysilane on steel substrates... 

Silanes, y-aminopropyltriethoxysilane and methyltrimethoxysilane were obtained from Union Carbide (A1100 and A163 silanes, respectively), y-chloro-propyltrimethoxysilane was obtained from Petrarch Systems, Inc. 

The aminosilane coupling agent 3-aminopropyltriethoxysilane or y-amino-propyltriethoxy silane—also abbreviated as 3-APS, y-APS, APS or A1100 (Union Carbide)—is widely used to promote adhesion between polyimide thin films and mineral surfaces such as native-oxide silica, alumina and various glass ceramics [1, 2]. The structure of APS and the hydrolysis reaction sire shown in Fig. 1. Typically, dilute aqueous solutions of 0.1 vol% or approximately 0.080 wt % are employed to prime the mineral surface. The mechanism for the interaction of the bifunctional aminosilane with the mineral surface is the subject of much speculation, although it is conjectured by Linde and Gleason [3] that the amine end initially forms an electrostatic bond with surface hydroxyls. Subsequently, possibly as the result of elevated temperatures, the silanol end of the molecule proceeds to form a siloxane-like bond with the surface and the amine... 

Adhesion has been achieved on these oxides through a variety of silane precoat treatment processes. Solutions of y-aminopropyltriethoxysilane, y-methacryloxytrimethoxysilane, and y-glycidoxytrimethoxysilane applied to thermal oxide substrates all improved resist image adhesion for conventioanl positive photoresists Mallinckrodt Multisurf also works well. Conventional liquid-phase application of HMDS, however, was not adequate for the latter three tougher substrates listed above it did provide adequate photoresist adhesion for thermal oxides, however. For the last three substrates, a double... 

Fig. 13 Commonly applied silanes in glass modification (1) 3-aminopropyltriethoxysilane (2) glycidopropyltrimethoxysilane (3) 3-mercaptopropyl-triethoxysilane (4) 4-trimeth-oxysilyl-benzaldehyde (5) triethoxysilane undecanoic acid (6) bis (hydroxyethyl) amino-propyltriethoxy-silane (7) 3-(2-aminoethylamino) propyltrimethoxysilane...

Modeling calculations of electronic and molecular parameters and thermodynamic functions of 1-aminopropyltriethoxysilane (II), 2-aminopropyltriethoxysilane (III), and 3-aminopropyltriethoxy-silane (la), which had a different position of the N atom in respect to Si, were performed by computer chemistry methods (Gaussian 98, HyperChem 6.0 software). 

The precursor compound, phosphornitrilic chloride trimer, reacts with nitrogen and oxygen nucleophiles to form stable products [10]. Reaction of the trimeric phosphazene chloride with nitrogen nucleophiles, such as 3-aminopropyltriethoxysilane, facilitates the introduction of the silane component in a single step resulting in the modified compounds 13 and 14 in yields of about 90 % (Eq. 5 Table 3)... 

Fig. 3.2 Commonly used alkylsilane reagents for functionalization of glass surfaces. (1) APTES aminopropyltriethoxysilane, (2) MPTS 3-mercaptopropyl-triethoxysilane, (3) GPTS glycidoxy-propyltrimethoxysilan, (4) TETU triethoxy-silane undecanoic acid, (5) HE-APTS b i s ( h yd mx y ct h y I) aminopropyltriethoxy-silane, (6) 4-trimethoxysilylbenzaldehyde, (7) GPTS/HEG glyddoxypropyltri-methoxysilane-hexaethylene glycol...

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