Granted Patent B2

US 12,559,628 · App. 18/027,951 · Granted Feb 24, 2026

Inventor: Jina Chon (Chungcheongbuk-do, KR)

Assignee: DOW SILICONES CORPORATION

C08L83/06C08G77/14C08G77/80C08K5/5415C08K5/5477C08K5/549C08L2205/025C08L2312/06

Abstract

Claims (18)

1 . A curable silicone composition comprising:

(A) an epoxy-functional silicone resin represented by the following average unit formula:

(R 1 3 SiO 1/2 ) a (R 1 2 SiO 2/2 ) b (R 1 SiO 3/2 ) c (SiO 4/2 ) d

wherein each R 1 is the same or different organic group selected from a C 1-6 monovalent aliphatic hydrocarbon group, a C 6-10 monovalent aromatic hydrocarbon group, and a monovalent epoxy-substituted organic group, provided that at least about 15 mol % of the total R are the C 6-10 monovalent aromatic hydrocarbon groups; and “a”, “b”, “c”, and “d” are numbers that satisfy the following conditions: 0≤a<0.4, 0<b<0.5, 0<c<1, 0≤d≤0.4, 0.1≤b/c≤0.6, and a+b+c+d=1; and about 2 to about 30 mol % of the total siloxane units have the monovalent epoxy-substituted organic groups;

(B) an epoxy-functional silicone represented by the following general formula:

X 1 —R 2 2 SiO(SiR 2 2 O) m SiR 2 2 —X 1

wherein each R 2 is the same or different organic group selected from a C 1-6 monovalent aliphatic hydrocarbon group and a C 6-10 monovalent aromatic hydrocarbon group; each X 1 is the same or different group selected from a monovalent epoxy-substituted organic group and an epoxy-functional siloxy group represented by the following general formula:

X 2 —R 3 2 SiO(SiR 3 2 O) x SiR 3 2 —R 4 —

wherein each R 3 is the same or different C 1-6 monovalent aliphatic hydrocarbon group; R 4 is a C 2-6 alkylene group; X 2 is a monovalent epoxy-substituted organic group; and “x” is a number of from about 0 to about 5, and “m” is a number of from about 0 to about 100, in an amount of from about 5 mass % to about 40 mass % of the total mass of components (A), (B), (C) and (D);

(C) a cationic photoinitiator, in an amount of from about 0.2 mass % to about 2 mass % of the total mass of components (A), (B), (C) and (D); and

(D) a silatrane derivative or a carbasilatrane derivative, wherein each derivative has at least one silicon atom-bonded alkoxy group per molecule, in an amount of from about 0.01 mass % to about 5.0 mass % of the total mass of components (A), (B), (C) and (D).

2 . The curable silicone composition according to claim 1 , wherein the monovalent epoxy-substituted organic groups in component (A) are groups selected from glycidoxyalkyl groups, 3,4-epoxycyclohexylalkyl groups, and epoxyalkyl groups.

3 . The curable silicone composition according to claim 1 , wherein the monovalent epoxy-substituted organic groups in component (B) are groups selected from glycidoxyalkyl groups, 3,4-epoxycyclohexylalkyl groups, and epoxyalkyl groups.

4 . The curable silicone composition according to claim 1 , wherein component (D) is a silatrane derivative or carbasilatrane derivative represented by the following general formula:

wherein R 5 is a group selected from a C 1-6 alkyl group, a C 2-6 alkenyl group, and a C 1-6 alkoxy group; each R 6 is the same or different alkoxysilyl alkyloxyalkyl group; each R 7 is the same or different hydrogen atom or a C 1-6 alkyl group; R 8 is a hydrogen atom or an alkoxysilyl alkyloxyalkyl group; and Y is an oxygen atom or a methylene group.

5 . The curable silicone composition according to claim 1 , wherein component (D) is a carbasilatrane derivative represented by the following formula:

6 . The curable silicone composition according to claim 1 , wherein component (D) is a silatrane derivative represented by the following formula:

7 . A cured product obtained by curing the curable silicone composition according to claim 1 .

Assignments (2)

Continuity (2)

References Cited (91)