US 12,227,530 B2
Method of preparing functional organosilanol compounds
Donald V. Eldred, Midland, MI (US); Matthew Jeletic, Midland, MI (US); John Roberts, Midland, MI (US); and Andre Yvon-Bessette, Midland, MI (US)
Assigned to Dow Silicones Corporation, Midland, MI (US); and Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/418,960
Filed by Dow Silicones Corporation, Midland, MI (US); and Dow Global Techologies LLC, Midland, MI (US)
PCT Filed Dec. 20, 2019, PCT No. PCT/US2019/068025
§ 371(c)(1), (2) Date Jun. 28, 2021,
PCT Pub. No. WO2020/142281, PCT Pub. Date Jul. 9, 2020.
Claims priority of provisional application 62/786,885, filed on Dec. 31, 2018.
Prior Publication US 2022/0112223 A1, Apr. 14, 2022
Int. Cl. C07F 7/08 (2006.01); B01J 23/44 (2006.01); B01J 27/20 (2006.01); B01J 31/22 (2006.01)
CPC C07F 7/087 (2013.01) [B01J 23/44 (2013.01); B01J 27/20 (2013.01); B01J 31/2295 (2013.01); C07F 7/0874 (2013.01); B01J 2531/821 (2013.01); B01J 2531/827 (2013.01)] 10 Claims
 
1. A method of preparing an organosilanol compound, said method comprising:
reacting (A) an initial organosilicon compound and (B) water in the presence of (C) a catalyst selected from (C1) [(C8H12)IrCl]2, (C2) [(p-cymene) RuCl2]2, and (C3) Pd/C, thereby preparing the organosilanol compound;
wherein the initial organosilicon compound (A) has the general formula:

OG Complex Work Unit Chemistry
and the organosilanol compound has the general formula:

OG Complex Work Unit Chemistry
where each R is an independently selected hydrocarbyl group; Y comprises a functional moiety selected from alkoxysilyl moieties, epoxide moieties, and acryloxy moieties, with the proviso that Y is other than the acryloxy moieties when the catalyst (C) is (C3) Pd/C; and subscript a is 0 or 1.