PHOTO AND HEAT-CURABLE SILICONE COMPOSITION, AND PRODUCTION METHOD OF CURED PRODUCT OF THE SAME

• Main Authors: TOYOSHIMA TAKEHARU, OZAI TOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 09.04.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide a two step curable silicone composition capable of individually and easily controlling first stage curing and second stage curing.SOLUTION: A silicone composition includes: an organopolysiloxane (A) having at least three (meth)acryl groups in one molecule; an organopolysiloxane (B) having at least two alkenyl groups, and no (meth)acryl groups in one molecule; an organohydrogenpolysiloxane (C) having at least two hydrosilyl groups in one molecule; a photopolymerization initiator (D); and a hydrosilylation reaction catalyst (E), where the (meth)acryl group contained in the constituent (A) is 1-15 mmol in 100 g of the composition, the ratio of the number of alkenyl groups in the composition/the number of (meth)acryl groups contained in the constituent (A) is 0.5 or more, and the ratio of the number of hydroxyl groups/the number of alkenyl groups and (meth)acryl groups contained in the constituent (A) and (B) is 0.8-3.0.SELECTED DRAWING: None 【課題】 １段階目の硬化および２段階目の硬化を個別かつ簡便に管理可能な２段階硬化型のシリコーン組成物を提供すること。【解決手段】（Ａ）１分子中に少なくとも３個の（メタ）アクリル基を有するオルガノポリシロキサン（Ｂ）１分子中に少なくとも２個のアルケニル基を有し、（メタ）アクリル基を有しないオルガノポリシロキサン（Ｃ）１分子中に少なくとも２個のヒドロシリル基を有するオルガノハイドロジェンポリシロキサン（Ｄ）光重合開始剤（Ｅ）ヒドロシリル化反応触媒を含有し、（Ａ）成分中に含まれる（メタ）アクリル基が、組成物１００ｇ中１～１５ｍｍｏｌであり、組成物中のアルケニル基の数／（Ａ）成分中に含まれる（メタ）アクリル基の数の比が０．５以上であり、ヒドロシリル基の数／（Ａ）および（Ｂ）成分中に含まれるアルケニル基および（メタ）アクリル基の数の比が０．８～３．０であるシリコーン組成物。【選択図】 なし