CARBOXYLIC ACID ANHYDRIDE GROUP-CONTAINING CYCLIC SILOXANE COMPOUND, EPOXY RESIN COMPOSITION CONTAINING THE SAME AND CURED PRODUCT THEREOF

• Main Authors: TANIGUCHI NAOSUKE, TATENO MASAKI, MIYAGAWA NAOFUSA
• Format: Patent
• Language: English; Japanese
• Published: 16.05.2016
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a carboxylic acid anhydride group-containing cyclic siloxane compound that suppresses excessive viscosity increase when used to form an epoxy resin composition, has excellent curability with little volatilization when cured, and gives a cured product excellent in transparency and hardness.SOLUTION: The cyclic siloxane compound (A) is represented by formula (1). For example, it shows an NMR spectrum shown in Fig. 1 (Ris a hydrocarbon group; X is a hydrocarbon group- or carboxylic acid anhydride group-containing organic group; n is an integer of 1 to 3; at least two of a plurality of Xs are a carboxylic acid anhydride group-containing organic group).SELECTED DRAWING: Figure 1 【課題】エポキシ樹脂組成物とした際の過度な粘度上昇を抑え、硬化時に揮発が少なく硬化性に優れ、その硬化物は優れた透明性、硬さの硬化物を与えるカルボン酸無水物基含有環状シロキサン化合物の提供。【解決手段】式（１）で表される環状シロキサン化合物（Ａ）。例えば、図１のＮＭＲスペクトルを示す。（Ｒ１は炭化水素基；Ｘは炭化水素基又はカルボン酸無水物基含有の有機基；ｎは１〜３の整数；複数存在するＸは少なくとも２つはカルボン酸無水物基含有の有機基）【選択図】図１