Title:
ポリ(トリメチレンテレフタレート)の製造方法
Document Type and Number:
Japanese Patent JP2010534276
Kind Code:
A
Abstract:
Disclosed is a method for producing poly(trimethylene terephthalate) (PTT), wherein one or two reactors are employed to simplify production processes. The method for producing poly(trimethylene terephthalate) using one or two reactors or one kneader-type extruder according to the present invention, comprises the steps of supplying 1,3-propanediol and terephthalic acid or 1,3-propanediol and dimethyl terephthalate to the material injection port of the reactor or the kneader-type extruder such that the mole ratio of propylene to the terephthalate group becomes 1.1 to 2.2, producing low molecular weight poly(trimethylene terephthalate) in the reactor or the kneader-type extruder through a direct esterification or transesterification, supplying a polymerization catalyst and an additive to the auxiliary injection port of the reactor or the kneader-type extruder, and applying a vacuum to the rear part of the reactor or the kneader-type extruder to produce high molecular weight poly(trimethylene terephthalate) through polycondensation, and forming the produced poly(trimethylene terephthalate) into pellets by using a pelletizer directly connected to the reactor or the kneader-type extruder.
Inventors:
Jang Hyun Kim
Chang Kyu Yi
Chang Kyu Yi
Application Number:
JP2010530944A
Publication Date:
November 04, 2010
Filing Date:
April 17, 2009
Export Citation:
Assignee:
Smalls Love
International Classes:
C08G63/78; C08G63/183
Domestic Patent References:
| JPH10330465A | 1998-12-15 | |||
| JPH08253595A | 1996-10-01 | |||
| JPH07196782A | 1995-08-01 | |||
| JPH05262862A | 1993-10-12 | |||
| JPS59174313A | 1984-10-02 | |||
| JP2005060528A | 2005-03-10 | |||
| JPH1095843A | 1998-04-14 |
Attorney, Agent or Firm:
Yasuhiko Murayama
Masatake Shiga
Takashi Watanabe
Shinya Mitsuhiro
Masatake Shiga
Takashi Watanabe
Shinya Mitsuhiro