发明授权
US06740400B2 Poly (trimethylene terephthalate) and a process for producing the same
有权
聚（对苯二甲酸丙二醇酯）及其制造方法
- 专利标题： Poly (trimethylene terephthalate) and a process for producing the same
- 专利标题（中）： 聚（对苯二甲酸丙二醇酯）及其制造方法
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申请号： US10066712申请日： 2002-02-06
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公开(公告)号： US06740400B2公开(公告)日： 2004-05-25
- 发明人: Jinichiro Kato , Yoichiro Azuma , Katsuhiro Fujimoto , Teruhiko Matsuo
- 申请人： Jinichiro Kato , Yoichiro Azuma , Katsuhiro Fujimoto , Teruhiko Matsuo
- 优先权： JP2001-031288 20010207; JP2001-077474 20010319
- 主分类号： D02G300
- IPC分类号： D02G300
摘要：
A poly(trimethylene terephthalate) comprising 80% by weight or more of trimethylene terephthalate units based on the entire repeating units, having an intrinsic viscosity of from 0.4 to 1.5 dl/g, and satisfying the following formula (1) [—OH]/([—OH]+[—COOH]+[—CH2CH═CH2])×100≧40 (1) wherein [—OH], [—COOH] and [—CH2CH═CH2] represent a terminal hydroxyl group content, a terminal carboxyl group content and a terminal allyl group content of the poly(trimethylene terephthalate), respectively. The poly(trimethylene terephthalate) can be produced by reacting terephthalic acid and/or its lower alcohol ester is reacted with 1,3-propanediol to form 1,3-propanediol ester of terephthalic acid and/or its oligomer, and then polycondensation reaction of the reactant is conducted at temperature of from 235 to 270° C. while the above formula (1) is being satisfied to give the above poly(trimethylene terephthalate).
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