METHOD FOR PRODUCING POLYACETAL COPOLYMER

• Main Authors: KUDO SHUICHI, OKA MIKIO, TOKI MAKOTO
• Format: Patent
• Language: English; Japanese
• Published: 28.12.2017
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PROBLEM TO BE SOLVED: To provide a polyacetal copolymer having a stabilized terminal that shows excellent heat stability, less coloring and less foreign matter.SOLUTION: A method for producing a polyacetal copolymer includes the terminal stabilization of (A) a polyacetal copolymer before terminal stabilization in the presence of (B) a stabilizer and (C) an inorganic filler. The method makes it possible to provide polyacetal copolymer having a stabilized terminal that shows excellent heat stability, less coloring and less foreign matter.SELECTED DRAWING: None 【課題】熱安定性に優れ、着色が少なく、異物の少ない末端安定化されたポリセタール共重合体を提供すること。【解決手段】（Ａ）末端安定化前のポリアセタール共重合体の末端安定化を、（Ｂ）安定剤及び（Ｃ）無機フィラーの存在下で行うことを含む、ポリアセタール共重合体の製造方法は、熱安定性に優れ、着色が少なく、異物の少ない末端安定化されたポリセタール共重合体を提供できる。【選択図】なし