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1. (WO2017061415) POLYESTER COMPOSITION FOR MASTER BATCHES, POLYESTER COMPOSITION FOR FILMS, AND POLYESTER FILM

Pub. No.:    WO/2017/061415    International Application No.:    PCT/JP2016/079456
Publication Date: Fri Apr 14 01:59:59 CEST 2017 International Filing Date: Wed Oct 05 01:59:59 CEST 2016
IPC: C08J 3/22
C08K 3/00
C08K 5/098
C08K 5/521
C08L 67/02
Applicants: TOYOBO CO., LTD.
東洋紡株式会社
Inventors: HAYASHI Syo
林 翔
NAKAGAWA Satoru
中川 悟
OHASHI Hideto
大橋 英人
Title: POLYESTER COMPOSITION FOR MASTER BATCHES, POLYESTER COMPOSITION FOR FILMS, AND POLYESTER FILM
Abstract:
The present invention is a polyester composition for master batches, which contains prescribed amounts of: a polyester having a dicarboxylic acid component and a glycol component as constituents; a magnesium compound; an alkali metal compound; a specific phosphorous compound; and a lubricant, and which has a sufficiently low melt resistivity and is excellent in hue and thermal stability. Adding this polyester composition for master batches enables enhancing of electrostatic adhesion to a cooling drum so as to improve film formation properties, and imparting of optimum slippage, thereby providing a polyester film that also has excellent quality.