	US 12,221,542 B2
	Addition-curable silicone rubber composition and method for producing same
Nobu Kato, Annaka (JP)
Assigned to SHIN-ETSU CHEMICAL CO., LTD., Tokyo (JP)
Appl. No. 17/415,360
Filed by SHIN-ETSU CHEMICAL CO., LTD., Tokyo (JP)
PCT Filed Dec. 10, 2019, PCT No. PCT/JP2019/048224 § 371(c)(1), (2) Date Jun. 17, 2021, PCT Pub. No. WO2020/129744, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 2018-235957 (JP), filed on Dec. 18, 2018.
Prior Publication US 2022/0064446 A1, Mar. 3, 2022
Int. Cl. C08G 77/12 (2006.01); C08G 77/08 (2006.01); C08G 77/20 (2006.01); C08L 5/16 (2006.01); C08L 83/04 (2006.01)

CPC C08L 83/04 (2013.01) [C08G 77/08 (2013.01); C08G 77/12 (2013.01); C08G 77/20 (2013.01); C08L 5/16 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01)]

8 Claims

1. An addition-curable silicone rubber composition comprising:

(A) 100 parts by weight of an organopolysiloxane which has at least two silicon-bonded alkenyl groups per molecule and in which an alkenyl group is bonded to a silicon atom at one or both ends of the molecular chain;

(B) from 1 to 80 parts by weight of y-cyclodextrin;

(C) an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule, in an amount such that the molar ratio of the silicon-bonded hydrogen atoms (Si—H groups) to all silicon-bonded alkenyl groups in the overall composition, expressed as (Si—H groups/Si-alkenyl groups), is from 0.5 to 5.0; and

(D) a catalytic amount of an addition reaction catalyst,

wherein some or all of component (A) forms, together with component (B), an inclusion complex.