SILICONE ADHESIVE COMPOSITION AND USE THEREOF

To provide a silicone adhesive composition and an application thereof, that has a viscosity that enables coating even with a small amount of solvent content, has excellent curability due to hydrosilylation reaction, cures, has sufficient adhesive strength for practical use, and has excellent mechani...

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Bibliographic Details
Main Authors IIMURA, Tomohiro, JANG, Eun Sil, DEGROOT, Jon Jr, JOFFRE, Eric, FURUKAWA, Haruhiko
Format Patent
LanguageEnglish
French
German
Published 20.10.2021
Subjects
ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE
ADHESIVES
CHEMISTRY
DYES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL
PAINTS
POLISHES
USE OF MATERIALS AS ADHESIVES
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Summary:To provide a silicone adhesive composition and an application thereof, that has a viscosity that enables coating even with a small amount of solvent content, has excellent curability due to hydrosilylation reaction, cures, has sufficient adhesive strength for practical use, and has excellent mechanical strength and elongation of the adhesive layer after curing, and can form a pressure-sensitive adhesive layer having sufficient adhesive strength for practical use. A silicone adhesive composition, containing:(A) a chain-like organopolysiloxane having at least two aliphatic unsaturated carbon-carbon bond-containing groups only at the terminals of the molecular chain; (B) a straight-chain organohydrogenpolysiloxane having silicon-bonded hydrogen atoms only at both terminals of the molecular chain; (C) a resinous organopolysiloxane; and (D) an organopolysiloxane having at least one or more aliphatic unsaturated carbon-carbon bond-containing groups at locations other than the ends of the molecular chain, and having at least three or more aliphatic unsaturated carbon-carbon bond groups in the molecule; where the ratio of the number of moles of silicon-bonded hydrogen atoms in component (B) to the number of moles of aliphatic unsaturated carbon-carbon bond-containing groups in components (A) to (D) is in the range of 0.70 to 1.30, and the amount of substance of the aliphatic unsaturated carbon-carbon bond-containing groups in component (D) is in the range of 0.001 to 0.030 in 100 g of the total amount of components (A) to (D) in the composition.
Bibliography:Application Number: EP20190897107