JP2010083957A5 - - Google Patents

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Publication number
JP2010083957A5
JP2010083957A5 JP2008253170A JP2008253170A JP2010083957A5 JP 2010083957 A5 JP2010083957 A5 JP 2010083957A5 JP 2008253170 A JP2008253170 A JP 2008253170A JP 2008253170 A JP2008253170 A JP 2008253170A JP 2010083957 A5 JP2010083957 A5 JP 2010083957A5
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JP
Japan
Prior art keywords
polycondensation reaction
titanium compound
organic titanium
reaction tank
polybutylene terephthalate
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Pending
Application number
JP2008253170A
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Japanese (ja)
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JP2010083957A (en
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Priority to JP2008253170A priority Critical patent/JP2010083957A/en
Priority claimed from JP2008253170A external-priority patent/JP2010083957A/en
Publication of JP2010083957A publication Critical patent/JP2010083957A/en
Publication of JP2010083957A5 publication Critical patent/JP2010083957A5/ja
Pending legal-status Critical Current

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Claims (4)

テレフタル酸を主成分とするジカルボン酸と１,４−ブタンジオールを主成分とするジオールとを主原料として、有機チタン化合物の触媒の存在下でエステル化反応させた後、続いて、２つ以上の重縮合反応槽で連続的に重縮合反応させてポリブチレンテレフタレートを製造する方法であって、最終重合反応槽以外の重縮合反応槽におけるジカルボン酸成分の反応率を９８％以上とした後、さらに有機チタン化合物を追加添加して重縮合反応し、エステル化反応と重縮合反応における有機チタン化合物総添加量が、チタン原子換算でポリマー総重量に対して３０〜１６０ｐｐｍであり、最終重合反応槽より上流の少なくとも１つの重縮合反応槽の温度が２４５℃以上であるポリブチレンテレフタレートの製造方法。 After esterification in the presence of a catalyst of an organic titanium compound using a dicarboxylic acid containing terephthalic acid as a main component and a diol containing 1,4-butanediol as a main component in the presence of an organic titanium compound catalyst, then two or more A polycondensation terephthalate by continuously polycondensation reaction in the polycondensation reaction tank, after the reaction rate of the dicarboxylic acid component in the polycondensation reaction tank other than the final polymerization reaction tank is 98% or more, Furthermore, an organic titanium compound is additionally added to perform a polycondensation reaction, and the total addition amount of the organic titanium compound in the esterification reaction and the polycondensation reaction is 30 to 160 ppm based on the total weight of the polymer in terms of titanium atoms. A method for producing polybutylene terephthalate, wherein the temperature of at least one polycondensation reaction tank upstream is 245 ° C or higher. 最終重合反応槽より上流の少なくとも１つの重縮合反応槽において、２４５〜２７０℃の温度かつ１〜７ｋＰａの減圧下で重縮合反応を行う請求項１に記載のポリブチレンテレフタレートの製造方法。2. The method for producing polybutylene terephthalate according to claim 1, wherein the polycondensation reaction is performed in a temperature of 245 to 270 ° C. and a reduced pressure of 1 to 7 kPa in at least one polycondensation reaction tank upstream of the final polymerization reaction tank. ジカルボン酸成分の反応率を９８％以上とした後、追加添加する有機チタン化合物の添加量がチタン原子換算でポリマー総重量に対して１０〜１００ｐｐｍである請求項１または２に記載のポリブチレンテレフタレートの製造方法。The polybutylene terephthalate according to claim 1 or 2, wherein the addition amount of the organic titanium compound added after the reaction rate of the dicarboxylic acid component is 98% or more is 10 to 100 ppm in terms of titanium atom with respect to the total weight of the polymer. Manufacturing method. 有機チタン化合物が、テトラ−ｎ−ブチルチタネートであることを特徴とする請求項１〜３のいずれかに記載のポリブチレンテレフタレートの製造方法。 The method for producing polybutylene terephthalate according to any one of claims 1 to 3, wherein the organic titanium compound is tetra-n-butyl titanate.
JP2008253170A 2008-09-30 2008-09-30 Method for production of polybutylene terephthalate Pending JP2010083957A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008253170A JP2010083957A (en) 2008-09-30 2008-09-30 Method for production of polybutylene terephthalate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008253170A JP2010083957A (en) 2008-09-30 2008-09-30 Method for production of polybutylene terephthalate

Publications (2)

Publication Number Publication Date
JP2010083957A JP2010083957A (en) 2010-04-15
JP2010083957A5 true JP2010083957A5 (en) 2011-11-04

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JP2008253170A Pending JP2010083957A (en) 2008-09-30 2008-09-30 Method for production of polybutylene terephthalate

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JP (1) JP2010083957A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5906778B2 (en) * 2012-02-08 2016-04-20 東レ株式会社 Method and apparatus for producing polybutylene terephthalate
JP6148152B2 (en) * 2013-10-28 2017-06-14 花王株式会社 Method for producing binder resin for polyester toner
CN108479671A (en) * 2018-05-28 2018-09-04 南京昊扬化工装备有限公司 Novel whole polycondensation vessel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5319637B2 (en) * 1973-05-28 1978-06-22
JP2005179431A (en) * 2003-12-17 2005-07-07 Toray Ind Inc Polybutylene terephthalate, its preparation method and molded product comprising the same

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