Photocurable liquid silicone composition, cured article thereof, optical filler containing said composition, and display device containing layer comprising cured article thereof
US-2023106539-A1 · Apr 6, 2023 · US
Curable silicone composition and cured product thereof
US12534618B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12534618-B2 |
| Application number | US-202218058542-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 23, 2022 |
| Priority date | Dec 2, 2021 |
| Publication date | Jan 27, 2026 |
| Grant date | Jan 27, 2026 |
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- Title
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Abstract
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The present invention relates to a curable silicone composition comprising: (A) at least one organopolysiloxane having at least two alkenyl groups per molecule; (B) at least one mercapto functional organopolysiloxane having at least two thiol groups per molecule; (C) at least one photopolymerization initiator; and, (D) 2,6-di-tert-butyl-4-methylphenol (BHT), wherein the composition has a viscosity of less than 200 mPa·s at 25° C.
First claim
Opening claim text (preview).
What is claimed is: 1 . A curable silicone composition comprising: (A) at least one organopolysiloxane having at least two alkenyl groups per molecule; (B) at least one mercapto functional organopolysiloxane having at least two thiol groups per molecule; (C) at least one photopolymerization initiator; and (D) 2,6-di-tert-butyl-4-methylphenol (BHT), wherein the composition has a viscosity of less than 200 mPa·s at 25° C., and wherein the (B) mercapto functional organopolysiloxane comprises (mercaptopropyl) methylsiloxane homopolymer or MT SH Q resin. 2 . The composition according to claim 1 , wherein the (A) organopolysiloxane having at least two alkenyl groups per molecule comprises at least one cyclic organopolysiloxane. 3 . The composition according to claim 2 , wherein the cyclic organopolysiloxane is represented by the following formula (I): (R 2 SiO) m in which, R indicates the same or different monovalent hydrocarbon, which can be optionally substituted with at least one halogen, wherein at least two of R per molecule represent alkenyl groups; and m is an integer of 4 to 50. 4 . The composition according to claim 1 , wherein the (A) organopolysiloxane having at least two alkenyl groups per molecule has alkenyl groups in an amount of 20 mol % or more and 80 mol % or less relative to the total amount of the silicon atom-bonded organic groups. 5 . The composition according to claim 2 , wherein the (A) organopolysiloxane having at least two alkenyl groups per molecule comprises the cyclic organopolysiloxane having at least two alkenyl groups per molecule in an amount of 50% by weight or more, relative to the total amount of the component (A). 6 . The composition according to claim 1 , wherein the (A) organopolysiloxane having at least two alkenyl groups per molecule includes linear organopolysiloxane, branched organopolysiloxane, and/or resinous organopolysiloxane in an amount of 10% by weight or less relative to the total amount of the composition. 7 . The composition according to claim 1 , wherein the (A) organopolysiloxane having at least two alkenyl groups per molecule is present in an amount of 10% by weight or more and 70% by weight or less relative to the total weight of the composition. 8 . The composition according to claim 1 , wherein the (B) mercapto functional organopolysiloxane is present in an amount of 30% by weight or more and 90% by weight or less relative to the total weight of the composition. 9 . The composition according to claim 1 , wherein the molar ratio of the thiol groups to alkenyl groups included in the composition is 0.5 or more and 2.0 or less. 10 . The composition according to claim 1 , wherein the (C) photopolymerization initiator comprises the following: (c-1) an alpha-hydroxyacetophenone, (c-2) a combination of an alpha-hydroxyacetophenone and an alpha-aminoalkylphenone, or (c-3) a combination of an alpha-hydroxyacetophenone and a mono-acylphosphine oxide. 11 . A sealing agent or sheet film formed with the curable silicone composition according to claim 1 .
Assignees
Inventors
Classifications
Phenols; Phenolates · CPC title
Aldehydes; Ketones · CPC title
Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers · CPC title
Polysiloxanes · CPC title
Electricity · mapped topic
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Frequently asked questions
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- What does patent US12534618B2 cover?
- The present invention relates to a curable silicone composition comprising: (A) at least one organopolysiloxane having at least two alkenyl groups per molecule; (B) at least one mercapto functional organopolysiloxane having at least two thiol groups per molecule; (C) at least one photopolymerization initiator; and, (D) 2,6-di-tert-butyl-4-methylphenol (BHT), wherein the composition has a viscos…
- Who is the assignee on this patent?
- Rohm & Haas Elect Materials Korea Ltd, Dupont Toray Specialty Materials Kk
- What technology area does this patent fall under?
- Primary CPC classification C08J5/18. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 27 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).