公开(公告)号：US20220056056A1

公开(公告)日：2022-02-24

申请号：US17472421

申请日：2021-09-10

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Masayasu IGARASHI ,  Kazuhiko SATO ,  Fujio YAGIHASHI ,  Tomohiro MATSUMOTO ,  Takeshi NOZAWA ,  Shigeru SHIMADA

IPC: C07F7/08 ,  C07F7/21

Abstract: The present invention provides a method for producing a silanol compound capable of efficiently producing a silanol compound. The method for producing a silanol compound includes a proton exchange step of forming a silanol compound having a structure represented by following formula (c) by reacting a silicate having a structure represented by following formula (a) with an acidic compound having an acid dissociation constant pKa of −1 to 20 in dimethyl sulfoxide (DMSO). (In formula (a), Qi+ represents an i-valent cation and i represents an integer of 1 to 4).

公开(公告)号：US20210061824A1

公开(公告)日：2021-03-04

申请号：US16606487

申请日：2018-03-05

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Masayasu IGARASHI ,  Kazuhiko SATO ,  Fujio YAGIHASHI ,  Tomohiro MATSUMOTO ,  Takeshi NOZAWA ,  Shigeru SHIMADA

IPC: C07F7/08 ,  C07F7/21

Abstract: The present invention provides a method for producing a silanol compound capable of efficiently producing a silanol compound. The method for producing a silanol compound includes a proton exchange step of forming a silanol compound having a structure represented by following formula (c) by reacting a silicate having a structure represented by following formula (a) with an acidic compound having an acid dissociation constant pKa of −1 to 20 in dimethyl sulfoxide (DMSO). (In formula (a), Qi+ represents an i-valent cation and i represents an integer of 1 to 4).

公开(公告)号：US20200079803A1

公开(公告)日：2020-03-12

申请号：US16490761

申请日：2018-03-01

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Kazuhiro MATSUMOTO ,  Kazuhiko SATO ,  Shigeru SHIMADA

IPC: C07F7/18 ,  C08G77/08 ,  C07F7/21

Abstract: The purpose of the present invention is to provide a method for producing an oligosiloxane and an oligosiloxane synthesizer, by which an oligosiloxane can be efficiently produced. An oligosiloxane can be efficiently produced by the method for producing an oligosiloxane, which includes a condensation step for generating a hydrosiloxane having a structure represented by the following Formula (d) by reacting an alkoxysilane having a structure represented by the following Formula (b) with a hydrosilane having a structure represented by the following Formula (c) in the presence of a boron compound having Lewis acidity, and a hydrosilylation step for generating an alkoxysiloxane having a structure represented by the following Formula (f) by reacting the hydrosiloxane having the structure represented by Formula (d) generated in the condensation step with a carbonyl compound represented by the following Formula (E) in the presence of a boron compound having Lewis acidity. Moreover, an oligosiloxane having arbitrary substituent sequences can be produced.