Title:
METHOD FOR PRODUCING PHENOLIC HYDROXYL GROUP-CONTAINING BRANCHED ORGANOPOLYSILOXANE
Document Type and Number:
WIPO Patent Application WO/2024/034385
Kind Code:
A1
Abstract:
[Problem] To provide a method for producing a curing reactive organopolysiloxane having good alkali solubility and curability (especially high energy ray curability). [Solution] A method for producing a phenolic hydroxyl group-containing branched organopolysiloxane having at least a step that subjects to a hydrosilylation reaction a branched organopolysiloxane represented by average unit formula (1'): (D3SiO1/2)a(D2SiO2/2)b(RSiO3/2)c(SiO4/2)d (1') (in the formula, R is a monovalent hydrocarbon group, etc., D each independently is the same group as R, at least one of all D is a hydrogen atom, and a, b, c, and d are numbers that satisfy the following conditions: 0 ≤ a, 0 ≤ b, 0 < (a + b), and 0 < (c + d).). The production method may also have a step that introduces a carboxylic acid-containing organic group into the molecule by reacting a phenolic hydroxyl group-containing organic group and an acid anhydride.
Inventors:
LIANG WENBIN (JP)
OGAWA TAKUYA (JP)
OGAWA TAKUYA (JP)
Application Number:
PCT/JP2023/027141
Publication Date:
February 15, 2024
Filing Date:
July 25, 2023
Export Citation:
Assignee:
DOW TORAY CO LTD (JP)
International Classes:
C07F7/04; C08G77/16; C08G77/38
Domestic Patent References:
| WO2020008829A1 | 2020-01-09 |
Foreign References:
| JPH08176427A | 1996-07-09 | |||
| JP2021187966A | 2021-12-13 | |||
| JP2016003299A | 2016-01-12 | |||
| JP2000072781A | 2000-03-07 | |||
| JP2019085534A | 2019-06-06 | |||
| JPH06207023A | 1994-07-26 | |||
| JP2003255546A | 2003-09-10 | |||
| JP2008063542A | 2008-03-21 | |||
| JPH0987391A | 1997-03-31 | |||
| JP2007258663A | 2007-10-04 | |||
| JP2000336093A | 2000-12-05 |
Other References:
B. N GHOSE: "SYNTHESIS OF SOME CARBON-FUNCTIONAL ORGANOSILICON COMPOUNDS", JOURNAL OF ORGANOMETALLIC CHEMISTRY, vol. 164, 1 January 1979 (1979-01-01), pages 11 - 18, XP055661734, DOI: 10.1016/S0022-328X(00)83115-0
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