SILICONE RUBBER SPHERICAL PARTICLE, SILICONE COMPOUND PARTICLE, AND METHOD OF PRODUCING THEM

• Main Authors: OKI TAKAHITO, KIMURA TSUNEO
• Format: Patent
• Language: English; Japanese
• Published: 08.04.2021
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide a silicone rubber spherical particle having a high hardness.SOLUTION: The silicone rubber spherical particle comprises: (A) an addition reaction product of (A-1) a compound represented by the following general formula (1) where R1 is a 1-12C monovalent hydrocarbon group unsubstituted or substituted by halogen atom, a cyano group, or a glycidoxy group, or an alkoxy group with (A-2) a hydrocarbon compound having two addition reaction-able C-C double bonds in one molecule, and having two or more addition reaction-able C-C double bonds in one molecule; (B) a linear organopolysiloxane having three or more hydrogen atoms bonding to (a) silicon atom(s) in one molecule, and having a phenyl group; and (C) an addition curing reaction cured product of a composition containing a hydrosilylation reaction catalyst.SELECTED DRAWING: None 【課題】硬度の高いシリコーンゴム球状粒子の提供。【解決手段】（Ａ）（Ａ−１）下記一般式（１）（Ｒ1は非置換又はハロゲン原子、シアノ基もしくはグリシドキシ基で置換された炭素原子数１〜１２の１価炭化水素基、又はアルコキシ基である。）で表される化合物と、（Ａ−２）付加反応性炭素−炭素二重結合を１分子中に２個有する炭化水素化合物との付加反応生成物であって、かつ付加反応性炭素−炭素二重結合を１分子中に２個以上有する付加反応生成物、（Ｂ）ケイ素原子に結合した水素原子を１分子中に３個以上有し、かつフェニル基を有する鎖状オルガノポリシロキサン、（Ｃ）ヒドロシリル化反応触媒を含有する組成物の付加硬化反応硬化物からなるシリコーンゴム球状粒子。【選択図】なし