Water → Aluminum sec-butoxide

Temperature

120 °C

Comparative Example 1 involves the preparation of aluminum phosphate without using an organosilane. A homogeneous solution of aluminum s-butoxide (0.082 gm, 0.33 mmol) in methoxyethanol (0.5 ml) is prepared in a glass vial containing a magnetic stir bar. It is stirred for ½ hr after addition of ethylphosphate (0.06 gm, 0.33 mmol). Addition of DI water (0.010 gm, 0.56 mmol) results in the formation of a milky gel. After diluting with 0.5 ml methoxyethanol, the resulting milky solution is stirred at room temperature/overnight. Addition of DI water (0.010 gm, 0.56 mmol) followed by stirring at RT/overnight and 100° C./2 hrs generates white precipitates. The solution is applied to a glass plate to form a highly opaque non-uniform coating. White solid residues obtained after removing the volatiles are not soluble in methoxyethanol even heated to 120° C. in the presence of phenyltrimethoxysilane.

1. additioncontaining a magnetic stir bar
2. customresults in the formation of a milky gel
3. stirringthe resulting milky solution is stirred at room temperature/overnight
4. stirringby stirring at RT/overnight and 100° C./2 hrs
5. customto form a highly opaque non-uniform coating
6. customWhite solid residues obtained
7. customafter removing the volatiles

ORD record

ord-023119fbd46242f398244149f7f1bc85

Source dataset

uspto-grants-2008_08

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07410631B2