Title:
LIQUID ADDITION-CURABLE FLUOROSILICONE COMPOSITION, FLUOROSILICONE RUBBER, AND MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2024/075472
Kind Code:
A1
Abstract:
A first aspect of the present invention is a liquid addition-curable fluorosilicone composition characterized by comprising: (A) a vinyl group-containing organopolysiloxane represented by general formula (1) and having a viscosity at 25ºC of 100-500,000 mPa·s; (B) a branched organohydrogen polysiloxane represented by formula (3) and having three or more silicon atom-bonded hydrogen atoms per molecule, the content of the component (B) being such that the number of hydrogen atoms bonded to silicon atoms in the component (B) is 0.5-10 per silicon atom-bonded vinyl group in the composition; (C) an addition reaction catalyst at a catalytic amount; and (D) a reinforcing silica filler that has been surface treated with an organosilicon compound represented by general formula (2), the content of the reinforcing silica filler being 10-60 parts by mass per 100 parts by mass of the component (A), and the composition being a liquid at 23ºC. Through this, a liquid addition-curable fluorosilicone composition that exhibits excellent curability, maintains mechanical strength, and is suitable for injection molding and the like can be provided.
Inventors:
HARA TATSUEI (JP)
KATO NOBU (JP)
KATO NOBU (JP)
Application Number:
PCT/JP2023/032998
Publication Date:
April 11, 2024
Filing Date:
September 11, 2023
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
C08L83/07; C08K3/36; C08L83/05; C08L83/08
Domestic Patent References:
| WO2017183541A1 | 2017-10-26 | |||
| WO2014020920A1 | 2014-02-06 | |||
| WO2019026401A1 | 2019-02-07 |
Foreign References:
| CN113025059A | 2021-06-25 | |||
| JP2016503108A | 2016-02-01 | |||
| CN111808430A | 2020-10-23 | |||
| JP2022172732A | 2022-11-17 |
Attorney, Agent or Firm:
YOSHIMIYA Mikio et al. (JP)
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