Curable organopolysiloxane composition, release coating agent and laminate made of the same

KR102991161B1Active Publication Date: 2026-07-15DOW TORAY CO LTD
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Patent Information

Authority / Receiving Office
KR · KR
Patent Type
Patents
Current Assignee / Owner
DOW TORAY CO LTD
Filing Date
2020-12-24
Publication Date
2026-07-15

AI Technical Summary

Technical Problem

Existing curable organopolysiloxane compositions fail to meet the high peel performance requirements for recent market demands while maintaining adhesive properties, leading to reduced adhesion and printability issues.

Method used

A curable organopolysiloxane composition comprising specific ratios of high and low viscosity chain-type organopolysiloxanes, organohydrogenpolysiloxane, and a hydrosilylation reaction catalyst, with optional hydrosilylation reaction inhibitors and photopolymerization initiators, to form a peelable curable film.

Benefits of technology

The composition achieves excellent release properties against adhesive materials, maintains adhesive strength, and prevents silicone migration, resulting in uniform coating and reduced peel resistance.

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Smart Images

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    Figure 112022076136630-PCT00003
Patent Text Reader

Abstract

[Problem] To provide a curable organopolysiloxane composition having peelability and the ability to form a curable film that exhibits excellent peel performance without reducing the adhesion to an adhesive material, a peel coating agent made of the same, and a laminate. [Solution] A curable organopolysiloxane composition comprising (A) a liquid phase or gum phase having plasticity with a viscosity of 1,000,000 mPa·s or more and having alkenyl groups only in the side chains of the molecule, (B) a chain organopolysiloxane having a viscosity of 1,000 mPa·s or less and having alkenyl groups only in the side chains of the molecule, (C) an organohydrogenpolysiloxane having two or more silicon-bonded hydrogen atoms (Si-H) in one molecule, and (D) a hydrosilylation reaction catalyst, wherein the mass ratio {(A) / (B)} of the above component (A) and component (B) is in the range of 95 / 5 to 5 / 95, and the use thereof as a release coating agent.
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