US 12,305,084 B2
Adhesive polyorganosiloxane composition
Masanori Takanashi, Tokyo (JP)
Assigned to MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC, Tokyo (JP)
Appl. No. 17/293,302
Filed by MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC, Tokyo (JP)
PCT Filed Nov. 13, 2019, PCT No. PCT/JP2019/044513
§ 371(c)(1), (2) Date May 12, 2021,
PCT Pub. No. WO2020/100936, PCT Pub. Date May 22, 2020.
Claims priority of application No. 2018-212984 (JP), filed on Nov. 13, 2018.
Prior Publication US 2021/0395582 A1, Dec. 23, 2021
Int. Cl. C09J 183/04 (2006.01); C08K 3/36 (2006.01); C09J 11/04 (2006.01)
CPC C09J 183/04 (2013.01) [C09J 11/04 (2013.01); C08K 3/36 (2013.01); C08K 2201/006 (2013.01)] 16 Claims
 
1. An adhesive polyorganosiloxane composition comprising:
(A) a polyorganosiloxane having 2 or more alkenyl groups in the molecule;
(B) a polyorganohydrogensiloxane having 3 or more hydrogen atoms bonded to a silicon atom in the molecule;
(C) a platinum-based catalyst;
(D) at least two kinds of adhesion imparting agents selected from the group consisting of the following (D1) to (D4):
(D1) an organosilicon compound having a hydrogen atom bonded to a silicon atom, and a side chain of the following formula (I) bonded to a silicon atom:

OG Complex Work Unit Chemistry
(D2) an organosilicon compound having a Si(OR3)n group and an epoxy-containing group, and/or a partially hydrolyzed condensate thereof;
(D3) a silane compound having a Si(OR3)n group and an aliphatic unsaturated hydrocarbon group, and/or a partially hydrolyzed condensate thereof; and
(D4) a tetraalkoxysilane compound represented by Si(OR4)4, and/or a partially hydrolyzed condensate thereof;
wherein, Q1 denotes a linear or branched alkylene group forming a carbon chain having 2 or more carbon atoms between the silicon atom and the ester bond; Q2 denotes a linear or branched alkylene group forming a carbon chain having 3 or more carbon atoms between the oxygen atom and the silicon atom in the side chain; R3 denotes an alkyl group having 1 to 4 carbon atoms or a 2-methoxyethyl group; R4 denotes an alkyl group having 1 to 3 carbon atoms; and n is an integer of 1 to 3;
(E) hexamethyldisilazane;
(F) water; and
(G) at least one kind of an inorganic filler selected from (G1) and (G2):
(G1) an inorganic filler without surface treatment having a BET specific surface area of 50 to 500 m2/g; and
(G2) an inorganic filler obtained by surface-treating said (G1) with hexamethyldisilazane.