	US 12,441,885 B2
	Photocurable liquid silicone composition, cured article thereof, optical filler containing said composition, and display device containing layer comprising cured article thereof
Takuya Ogawa, Ichihara (JP)
Assigned to DOW TORAY CO., LTD., Tokyo (JP)
Appl. No. 17/800,212
Filed by DOW TORAY CO., LTD., Tokyo (JP)
PCT Filed Feb. 19, 2021, PCT No. PCT/JP2021/006285 § 371(c)(1), (2) Date Oct. 27, 2022, PCT Pub. No. WO2021/167051, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 2020-028126 (JP), filed on Feb. 21, 2020.
Prior Publication US 2023/0106539 A1, Apr. 6, 2023
Int. Cl. C08L 83/04 (2006.01); C08G 77/00 (2006.01); C08G 77/20 (2006.01); C08J 3/28 (2006.01); C08K 5/37 (2006.01); G02B 1/04 (2006.01); G02B 1/12 (2006.01); C08G 77/04 (2006.01)

CPC C08L 83/04 (2013.01) [C08G 77/20 (2013.01); C08G 77/80 (2013.01); C08J 3/28 (2013.01); C08K 5/37 (2013.01); G02B 1/04 (2013.01); G02B 1/12 (2013.01); C08G 77/045 (2013.01); C08L 2205/025 (2013.01)]

12 Claims

1. A photocurable liquid silicone composition, comprising:

(A) an organosilane or organopolysiloxane with 1 to 5 silicon atoms, having at least two alkenyl groups with 2 to 12 carbon atoms in a molecule, and at least two monovalent functional groups selected from aromatic groups with 6 to 12 carbon atoms and aralkyl groups with 7 to 12 carbon atoms;

(C) a compound having at least two mercapto groups in the molecule, present in an amount where the mercapto groups in component (C) are 0.2 to 3 mols relative to 1 mol of alkenyl groups in component (A); and

(D) a photo-radical initiator;

wherein with regards to 100 parts by mass of component (A), component (C), and component (D), the content of component (A) is in a range of 10 to 99 parts by mass and the content of component (D) is 0.01 to 3.0 parts by mass, and the refractive index of the entire liquid composition prior to curing, at 25° C. and at a wavelength of 847 nm, is 1.48 or higher.