POLYORGANOSILOXANE-CONTAINING GRAFT COPOLYMER POWDER, AND RESIN COMPOSITION USING THE SAME, AS WELL AS MOLDED PRODUCT COMPOSED OF THE SAME

• Main Authors: HAGI MISAKI, IIMORI MASASHI, TAKEMASU KENTA, MATSUOKA SHINJI, UEDA MASAHIRO, ARAI KEIYA
• Format: Patent
• Language: English; Japanese
• Published: 18.08.2023
• 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 polyorganosiloxane-containing graft copolymer powder which can provide an aromatic polyester resin composition excellent in the balance of color development and impact resistance and a molded product composed of the same.SOLUTION: Polyorganosiloxane-containing graft copolymer powder of the invention is powder of the polyorganosiloxane-containing graft copolymer made by graft polymerizing a mixture (B) of a vinyl monomer (b1) with an epoxy group and an another vinyl monomer (b2) to a polyorganosiloxane-containing rubber (A), in which a content of the polyorganosiloxane (A1) in the rubber (A) is 12-50 mass%, a weight average particle diameter of the polyorganosiloxane-containing graft copolymer is 300-2,000 nm, and an epoxy equivalent of the polyorganosiloxane-containing graft copolymer is 2,500-7,800 g/eq.SELECTED DRAWING: None 【課題】本発明の目的は、発色性と耐衝撃性とのバランスに優れた芳香族ポリエステル樹脂組成物及び成形体を提供可能なポリオルガノシロキサン含有グラフト共重合体粉体を提供することにある。【解決手段】本発明によるポリオルガノシロキサン含有グラフト共重合体粉体は、ポリオルガノシロキサンを含むゴム（Ａ）に、エポキシ基を有するビニル単量体（ｂ1）と、その他のビニル単量体（ｂ２）の混合物（Ｂ）をグラフト重合したポリオルガノシロキサン含有グラフト共重合体の粉体であって、前記ゴム（Ａ）に含まれるポリオルガノシロキサン（Ａ１）の含有量が１２～５０質量％、前記ポリオルガノシロキサン含有グラフト共重合体の重量平均粒子径が３００～２０００ｎｍ、前記ポリオルガノシロキサン含有グラフト共重合体のエポキシ当量が２５００～７８００ｇ／ｅｑである。【選択図】なし