Aminopropyl trimethoxy silane

ALKANOLAMNES - ALKANOLAMINES FROM OLEFIN OXIDES AND AL ONIA] (Vol 2) (3-(2-Aminoethyl)aminopropyl)trimethoxy silane... 

Typical procedure tetraethoxysilane (18.75 g, 0.09 mol) and (3-aminopropyl)trimethoxy-silane (1.79 g, 0.01 mol) were added, separately, to a stirred mixture of ethanol (41 g) and distilled water (53 g) containing n-dodecylamine (5.09 g). After 24 h stirring at RT the white solid was filtered and the template removed by extraction with hot ethanol. The product was dried at 110 °C. 

Chem. Descrip. N-(2-Aminoethyl)-3-aminopropyl trimethoxy silane (50%) in butanol... 

Chem. Descrip. N-(2-Aminoethyl-3-aminopropyl trimethoxy silane CAS 1760-24-3 EINECS/ELINCS 212-164-2 Uses Adhesion promoter and pigment treatment for coatings, adhesives coupling agent used for epoxies, phenolics, melamines, nylons, PVC, acrylics, polyolefins, polyurethanes, nitrile rubbers food pkg. adhesives Regulatory FDA 21CFR 175.105,175.300 Use Level 0.05-16%... 

Generally, octadecyl-trimethoxy silane, dodecyl-trichlorosilane and y-aminopropyl-trimethoxy-silane are used for the compatibilisation of nonmiscible or poorly miscible polymer-polymer systems. These compounds can connect to the apolar plastic constituent by their aliphatic groups via both physical and chemical bonds while the silane groups connect to the other polar polymer constituents. Figure 9.4 summarises the compatibility effect of commonly used siloxane-type compatibilisers. 

The colloid solutions described above (Ag nanotriangles, citrate-reduced Ag, and citrate-reduced Au) were dialyzed against pH=5 ultrapure water for 48 hours before further modification. Based on the known size and density of the metallic cores, 1 mM aqueous (3-aminopropyl)trimethoxysilane (390 iL) was added to 10 mL of the dialyzed colloid solution. After 15 minutes, the pH of the colloid/(3-aminopropyl)trimethoxy-silane solution was raised to 11.5 by adding aqueous potassium hydroxide. Finally, the silica shell began to form after 27% sodium silicate (2.1 xL) was added to the basic solution. Quenching of the shell growth was accomplished by adding 40 mL of absolute ethanol to the nanoparticle solution. 

Figure 1. The chemical structure of (a) y-(aminopropyl) trimethoxy silane (Z6011) (b) N-(3-Trimethoxysilylpropyl) diethylenetriamine (TMS).

The beads were first washed with acetone and then treated with a 10% aqueous NaOH solution at 50 C for 1 hour. After washing the beads were then treated with a freshly prepared 10% aqueous solution of Dow Coming Z-6020 silane coupling agent at room temperature for 30 minutes (Dow Coming Corporation, Midland, Michigan). This agent is N-3-aminoethyl-Y-aminopropyl trimethoxy silane. The beads were then removed from the silane and dried in an oven at 110 C for 3 hours. 

Tetraethoxysilane is flammable (bp 168°C) and may vigorously react with water. It is an eye and limg irritant and may damage the liver and kidneys. [N-(amino-ethyl)aminopropyl]trimethoxy-silane may also react vigorously with water. 

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