Title:
METHOD FOR PRODUCING POLYESTER RESIN COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2022/054669
Kind Code:
A1
Abstract:
Provided is a method for producing a polyester resin composition, whereby it becomes possible to reduce catalyst cost when a polymerization catalyst comprising an aluminum compound and a phosphorus compound is used and to reduce foreign matters in the polyester resin composition. The method for producing a polyester resin composition is characterized by comprising a step for mixing a base polyester resin (A) comprising an aluminum compound and a phosphorus compound and satisfying items (1) to (3) with a master batch (B) comprising an anti-blocking agent. (1) The content of element aluminum in the base polyester resin (A) is 9 to 19 ppm by mass; (2) the content of element phosphorus in the base polyester resin (A) is 13 to 31 ppm by mass; and (3) the molar ratio of element phosphorus to element aluminum in the base polyester resin (A) is 1.32 to 1.80, inclusive.
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Inventors:
NAKAGAWA SATORU (JP)
UOTANI KOSUKE (JP)
KANETAKA SHINYA (JP)
UOTANI KOSUKE (JP)
KANETAKA SHINYA (JP)
Application Number:
PCT/JP2021/032138
Publication Date:
March 17, 2022
Filing Date:
September 01, 2021
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
C08J3/22; C08G63/78; C08G63/84; C08K3/36; C08L67/00
Domestic Patent References:
| WO2013146524A1 | 2013-10-03 | |||
| WO2015159771A1 | 2015-10-22 | |||
| WO2017061415A1 | 2017-04-13 | |||
| WO2021125137A1 | 2021-06-24 |
Foreign References:
| JP2001163963A | 2001-06-19 | |||
| JP2002322255A | 2002-11-08 | |||
| JP2003301038A | 2003-10-21 | |||
| JP2005126449A | 2005-05-19 | |||
| JP2006089688A | 2006-04-06 |
Attorney, Agent or Firm:
USFI PATENT ATTORNEYS INTERNATIONAL OFFICE (JP)
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