Title:
ポリエステル樹脂組成物及びその製造方法
Document Type and Number:
Japanese Patent JP7295636
Kind Code:
B2
Abstract:
To provide a polyester resin composition having high thermal stability and mechanical physical property as well as excellent color tone and transparency.SOLUTION: A polyester resin composition contains a copolymer of a terephthalic acid component and an isophthalic acid component, and an ethylene glycol component. The copolymer contains a multifunctional component having three or more of carboxyl groups and/or hydroxy groups. The isophthalic acid component is 1 mol% to 50 mol% to the acid component. The multifunctional component is 0.1 mol% to 0.8 mol% to a total amount of the polycarboxylic acid component. The polyester resin composition contains a titanium compound containing 1 ppm to 10 ppm of a titanium element, and a phosphorus compound containing 1 ppm to 30 ppm of a phosphorus element. A content of diethylene glycol is 2.7 mol% or smaller relative to a total amount of the acid component. A MI30/MI6 at 280°C is 1.0 or larger and 1.3 or smaller.SELECTED DRAWING: None
Inventors:
Masahiro Yama
Keita Katsuma
Tetsuo Nishikawa
Toshio Homma
Keita Katsuma
Tetsuo Nishikawa
Toshio Homma
Application Number:
JP2018246963A
Publication Date:
June 21, 2023
Filing Date:
December 28, 2018
Export Citation:
Assignee:
Daiwa Seikan Co., Ltd.
Bell Polyester Products Co., Ltd.
Bell Polyester Products Co., Ltd.
International Classes:
C08G63/183; C08L67/02
Domestic Patent References:
| JP2007126680A | ||||
| JP2015151510A |
Attorney, Agent or Firm:
Yuji Iwahashi
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