LIQUID COMPOSITION FOR SILICONE RUBBER SPHERICAL PARTICLES, SILICONE RUBBER SPHERICAL PARTICLES AND PRODUCTION METHOD THEREFOR, AND SILICONE COMPOSITE PARTICLES, AND PRODUCTION METHOD THEREFOR

• Main Authors: OKI TAKAHITO, KIMURA TSUNEO, IGUCHI YOSHINORI, AOKI SHUNJI
• Format: Patent
• Language: English; Japanese
• Published: 18.01.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

To provide silicone rubber spherical particles that are decomposed by its crosslinked structure cleaved due to an external stimulus or the like in the natural environment.SOLUTION: The present invention is a liquid composition for silicone rubber spherical particles, the liquid composition comprising: (A) a polysiloxane represented by general formula (1) and having at least two alkenyl groups per molecule thereof; (B) an organohydrogenpolysiloxane having at least two hydrogen atoms bonded to a silicon atom per molecule thereof; and (C) a hydrosilylation reactive catalyst. There are also provided silicone rubber spherical particles, which are addition-reaction cured products of the composition. [R1 is an alkenyl group. R2 is a divalent hydrocarbon group. R3 is an alkyl group or alkenyl group. X is ester group. n is 1≤n≤1000].SELECTED DRAWING: Figure 1 【課題】架橋構造が自然環境下の外部刺激等により切断され、分解するシリコーンゴム球状粒子を提供する。【解決手段】（Ａ）一般式（１）で示されるアルケニル基を１分子中に少なくとも２個有するポリシロキサン、（Ｂ）ケイ素原子に結合した水素原子を１分子中に少なくとも２個有するオルガノハイドロジェンポリシロキサン、および（Ｃ）ヒドロシリル化反応性触媒を含むシリコーンゴム球状粒子用液状組成物。前記組成物の付加反応硬化物であるシリコーンゴム球状粒子。TIFF2023007034000024.tif36132［Ｒ１はアルケニル基。Ｒ２は２価炭化水素基。Ｒ３はアルキル基又はアルケニル基。Ｘはエステル基。ｎは１≦ｎ≦１０００。］【選択図】図１