Title:
許容可能なアセトアルデヒド生成率を持つ高固有粘度融液相ポリエステルポリマー
Document Type and Number:
Japanese Patent JP5695118
Kind Code:
B2
Abstract:
A method for the production of solid polyester polymer particles comprising: a) polycondensing a molten polyester polymer composition in the presence of a polycondensation catalyst composition comprising antimony species; b) continuing the polycondenzation of the molten polyester polymer composition to an It.V. of 0.68 dL/g or more; and c) after reaching an It.V. of 0.68 dL/g or more, adding a catalyst stabilizer or deactivator to the polymer melt; and d) after reaching an It.V. of 0.68 dL/g or more, solidifying the melt into solid polyester polymer particles which do not contain organic acetaldehyde scavengers. In a further embodiment, after solidification of the polyester from the melt phase polycondenzation process: e) the amount of residual acetaldehyde in the particles in the solid state is reduced to a level of 10 ppm or less without increasing the It.V. of the particles by more than 0.03 dL/g. Such particles having an AA (acetaldehyde) generation rate of 20 ppm or less upon being melted after solidification following the melt phase production and a free AA level reduced after melt phase production to 10 ppm or less are introduced into a melt processing zone to make articles such as bottle preforms having acceptable levels of residual AA.
Inventors:
Jennigan, mary terres
Application Number:
JP2013087338A
Publication Date:
April 01, 2015
Filing Date:
April 18, 2013
Export Citation:
Assignee:
Grupo Petro Temex, Sociedad Anonima de Capital Bariabure
International Classes:
C08G63/86; C08G63/87
Domestic Patent References:
| JP2004197088A | ||||
| JP2002226568A | ||||
| JP2000510180A | ||||
| JP2005256000A | ||||
| JP2001081176A |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Fukumoto product
Tetsuji Koga
Kazuhiro Nakamura
Yoichi Watanabe
Ryotaro Takei
Takashi Ishida
Fukumoto product
Tetsuji Koga
Kazuhiro Nakamura
Yoichi Watanabe
Ryotaro Takei