SPHERICAL PARTICLES OF CROSS-LINKED POLYETHER/POLYSILOXANE RUBBER AND METHOD FOR PRODUCING SAME, AND CROSS-LINKED POLYETHER/POLYSILOXANE COMPOSITE PARTICLES AND METHOD FOR PRODUCING SAME

• Main Authors: OKI TAKAHITO, KIMURA TSUNEO, IGUCHI YOSHINORI, AOKI SHUNJI
• Format: Patent
• Language: English; Japanese
• Published: 01.11.2021
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide spherical rubber particles and composite particles which exhibit excellent dispersibility in an aqueous dispersion and manifest decomposition characteristics by external stimulation, and methods for producing these.SOLUTION: Provided are spherical particles of cross-linked polyether/polysiloxane rubber, comprising an addition reaction product of a composition containing (A) a polyether having at least two aliphatic unsaturated groups in a molecule, (B) an organohydrogenpolysiloxane represented by the following formula and has at least two hydrogen atoms bonded to a silicon atom in a molecule, and (C) a hydrosilylation reaction catalyst.SELECTED DRAWING: None 【課題】水系組成物での優れた分散性を示し、外部刺激による分解特性を発現するゴム球状粒子、複合粒子、及びこれらの製造方法の提供。【解決手段】ポリエーテル／ポリシロキサン架橋ゴム球状粒子であって、（Ａ）脂肪族不飽和基を一分子中に少なくとも２個有するポリエーテル、（Ｂ）下記式で示され、ケイ素原子に結合した水素原子を一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、及び（Ｃ）ヒドロシリル化反応性触媒、を含有する組成物の付加反応物を含む、ポリエーテル／ポリシロキサン架橋ゴム球状粒子。【選択図】なし