US 12,122,915 B2
Curable organopolysiloxane composition having excellent cold resistance, and a pattern forming method
Nohno Toda, Ichihara (JP); and Manabu Sutoh, Ichihara (JP)
Assigned to DOW TORAY CO., LTD., Tokyo (JP)
Appl. No. 17/285,792
Filed by DOW TORAY CO., LTD., Tokyo (JP)
PCT Filed Oct. 15, 2019, PCT No. PCT/JP2019/040371
§ 371(c)(1), (2) Date Apr. 15, 2021,
PCT Pub. No. WO2020/080326, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 2018-196615 (JP), filed on Oct. 18, 2018.
Prior Publication US 2021/0371659 A1, Dec. 2, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C08K 3/36 (2006.01); B05D 1/26 (2006.01); B81B 7/02 (2006.01); C08G 77/00 (2006.01); C08G 77/08 (2006.01); C08G 77/12 (2006.01); C08G 77/20 (2006.01); C08K 5/00 (2006.01); C08K 5/5425 (2006.01); C08K 5/544 (2006.01); C08K 9/06 (2006.01); C08L 83/04 (2006.01)
CPC C08L 83/04 (2013.01) [B05D 1/26 (2013.01); B81B 7/02 (2013.01); C08G 77/08 (2013.01); C08G 77/12 (2013.01); C08G 77/20 (2013.01); C08G 77/80 (2013.01); C08K 3/36 (2013.01); C08K 5/0025 (2013.01); C08K 5/5425 (2013.01); C08K 5/544 (2013.01); C08K 9/06 (2013.01); B05D 2518/12 (2013.01); C08K 2201/003 (2013.01); C08L 2203/20 (2013.01); C08L 2205/025 (2013.01)] 12 Claims
 
1. A curable organopolysiloxane composition which is a liquid adapted for pattern formation applications, the curable organopolysiloxane composition comprising:
(A) 100 parts by mass of an alkenyl group-containing organopolysiloxane having a viscosity of from 10 to 100,000 mPa·s at 25° C.;
(B) an organohydrogenpolysiloxane present in an amount in which the silicon atom-bonded hydrogen atoms in component (B) are 0.2 to 5 mols with respect to 1 mol of alkenyl groups contained in component (A);
(C) a catalytic amount of a hydrosilylation reaction catalyst;
(D) 2.5 to 20.0 parts by mass of a functional filler having an average particle diameter of from 0.01 to 10 um as measured by a laser diffraction/scattering method;
(E) one or more adhesion promoters; and
(F) a hydrosilylation reaction inhibitor;
wherein at least a portion of component (A) or component (B) is an organopolysiloxane having silicon atom-bonded aromatic functional groups;
wherein the curable organopolysiloxane composition has a viscosity at a strain speed of 1,000 (1/s) which is 2.0 Pa·s or less;
wherein, the curable organopolysiloxane composition has a viscosity at a strain speed of 0.1 (1/s) which is a value 50.0-fold or more relative to the viscosity at a strain speed of 1,000 (1/s); and
wherein the content of silicon atom-bonded aromatic functional groups in the curable organopolysiloxane composition is within a range of from 1.0 to 6.0 mass %.