Title:
ULTRAVIOLET RAY-CURABLE SILICONE COMPOSITION AND CURED PRODUCT THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/250988
Kind Code:
A1
Abstract:
This composition contains: (A) an organopolysiloxane which has a main chain formed of repeats of a diorganosiloxane unit, which has a group represented by formula (1) at one or both terminals, and in which not less than 5% of the total number of monovalent organic groups bound to a Si atom is an aryl group (R1 represents a monovalent hydrocarbon group, R2 represents an oxygen atom or an alkylene group, R3 represents an acryloyloxyalykyl group or the like, p represents a number that satisfies 0≤p≤10, a represents a number that satisfies 1≤a≤3, and the dashed line represents atomic bonding); (B) an organopolysiloxane resin which comprises (a) a unit represented by formula (2) (R1-R3, where a and p are as described above), (b) a R1
3SiO1/2 unit, (c) a R1
2SiO2/2 unit, and (d) a SiO4/2 unit, and in which not less than 5% of the total number of monovalent organic groups bound to a Si atom is an aryl group; and (C) a photoinitiator. Said composition has excellent curability with ultraviolet rays and provides a cured product that has excellent heat resistance, transparency, and refractive index.
Inventors:
OTAKE KOHEI (JP)
ASAKURA ERI (JP)
ASAKURA ERI (JP)
Application Number:
PCT/JP2021/014894
Publication Date:
December 16, 2021
Filing Date:
April 08, 2021
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
C08F290/06
Domestic Patent References:
| WO2018225430A1 | 2018-12-13 |
Foreign References:
| JP2016190979A | 2016-11-10 | |||
| JP2011137050A | 2011-07-14 | |||
| JPH06179820A | 1994-06-28 | |||
| US20030064232A1 | 2003-04-03 | |||
| JP2021059658A | 2021-04-15 | |||
| JP6124379B2 | 2017-05-10 | |||
| JP4984111B2 | 2012-07-25 | |||
| JP2015110752A | 2015-06-18 |
Attorney, Agent or Firm:
PATENT PROFESSIONAL CORPORATION EI-MEI PATENT OFFICE (JP)
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