METHOD FOR PRODUCING LOW-BLEED COMPOSITION OF ANTISTATIC AGENT-CONTAINING RESIN MASTERBATCH, AND THE COMPOSITION

• Main Authors: SASAKI AKIO, UEDA NOBUTAKA, YONEHARA TAKASHI, KIMURA TORU, HANDA KOICHI, ASAMI AKI
• Format: Patent
• Language: English
• Published: 12.04.2012
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PROBLEM TO BE SOLVED: To provide a method for producing a low-bleed composition of an antistatic agent-containing thermoplastic resin masterbatch, which exhibits little tackiness before use, and which can contain the antistatic agent in a high concentration.SOLUTION: In a resin masterbatch containing an antistatic agent, in order to reduce the bleed amount of the antistatic agent to the surface, a composition in which 1 to 30 pts.wt of the antistatic agent and 0.1 to 1 pt.wt of a nucleating agent are blended in 100 pts.wt of a crystalline thermoplastic resin, and strands discharged from a die of an extruder is slowly cooled at an air cooling rate of ≥25%.