Method for producing liquid crystalline polymer microspheres

Abstract

Abstract Translated from Japanese (57)【要約】 【構成】 自己配向性を有する液晶高分子と溶媒に可溶 な非液晶性高分子とを重量比３０：７０ないし１０：９ ０の範囲で混合したのち、液晶性高分子及び非液晶性高 分子の融解温度以上でかつ液晶性高分子が液晶状態を維 持しうる温度に加熱して押出成形し、次いで非液晶性高 分子を溶媒で溶解除去することにより、平均粒子径０． ５〜１０μｍをもつ液晶性高分子微小球状体を製造す る。 【効果】 上記球状体は、融液状態で液晶を形成し、液 晶ドメイン内で分子鎖が配列した液晶構造から固化する ことで、規則性があり、表面が平滑な固体構造を示す新 規なものであって、耐熱性や耐薬品性や耐溶剤性に優れ ているので、粉末成形用原料、焼結成形用原料、熱可塑 性高分子材料及び熱硬化性高分子材料の充てん材、耐熱 性塗料やエナメル、接着剤の充てん材などに有用であ る。 (57) [Summary] [Structure] A liquid crystal polymer having self-alignment property and a non-liquid crystal polymer soluble in a solvent are contained in a weight ratio of 30:70 to 10: 9. After mixing in the range of 0, the mixture is extruded by heating to a temperature above the melting temperature of the liquid crystalline polymer and the non-liquid crystalline polymer and at a temperature at which the liquid crystalline polymer can maintain the liquid crystal state, and then the non-liquid crystalline polymer. Are dissolved and removed with a solvent to give an average particle diameter of 0. A liquid crystalline polymer microsphere having 5 to 10 μm is produced. [Effect] The spherical body is a novel one that has a regular structure and a solid structure with a smooth surface by forming a liquid crystal in a melt state and solidifying from a liquid crystal structure in which molecular chains are arranged in a liquid crystal domain. However, since it has excellent heat resistance, chemical resistance, and solvent resistance, it is a powder molding raw material, a sintering molding raw material, a filler of a thermoplastic polymer material and a thermosetting polymer material, and a heat resistant coating. It is also useful as a filling material for enamel and adhesives.

Inventors

• 👤 Michiyuki Kiyoutani
• 👤 陸征 京谷
• 👤 Akira Kaido
• 👤 彰 海藤
• 👤 Kazuo Nakayama
• 👤 和郎 中山

Bibliographic Details