JPS5513715A - Preparation of polyester pellet - Google Patents
Preparation of polyester pelletInfo
- Publication number
- JPS5513715A JPS5513715A JP8575478A JP8575478A JPS5513715A JP S5513715 A JPS5513715 A JP S5513715A JP 8575478 A JP8575478 A JP 8575478A JP 8575478 A JP8575478 A JP 8575478A JP S5513715 A JPS5513715 A JP S5513715A
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- pellet
- solid
- state polymerization
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To prepare polyester pellets with low impurity content such as dust, acetaldehyde, etc., by washing polyester pellets with water or an organic solvent after or before the solid-state polymerization, thereby extracting the impurities from the polyester.
CONSTITUTION: In the preparation of high molecular weight polyester pellet by the solid-state polymerization of polyester pellet having an intrinsic viscosity of 0.4W0.8, the pellet is washed with water or an organic solvent having a boiling point of ≤190°C before or after the solid-state polymerization. The polyester polyethylene terephthalate pellet having an intrinsic viscosity of 0.4W0.8, can be prepared by the polycondensation of bis-β-hydroxyethyl terephthalate or its oligomer under reduced pressure in the presence of a polycondensation catalyst.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8575478A JPS5513715A (en) | 1978-07-14 | 1978-07-14 | Preparation of polyester pellet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8575478A JPS5513715A (en) | 1978-07-14 | 1978-07-14 | Preparation of polyester pellet |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5513715A true JPS5513715A (en) | 1980-01-30 |
Family
ID=13867635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8575478A Pending JPS5513715A (en) | 1978-07-14 | 1978-07-14 | Preparation of polyester pellet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5513715A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5891759A (en) * | 1981-11-26 | 1983-05-31 | Toray Ind Inc | Thermoplastic polyester composition |
JPS59219328A (en) * | 1983-05-28 | 1984-12-10 | Toyobo Co Ltd | Production of high-polymerization degree polyester |
EP0389948A2 (en) * | 1989-03-31 | 1990-10-03 | Mitsui Petrochemical Industries, Ltd. | Process for treatment of polyethylene terephthalate, polyethylene terephthalate for molding purposes and process for preparation thereof |
JPH037725A (en) * | 1989-03-31 | 1991-01-14 | Mitsui Petrochem Ind Ltd | Polyethylene terephthalate |
JPH0347830A (en) * | 1989-03-31 | 1991-02-28 | Mitsui Petrochem Ind Ltd | Production of polyethylene terephthalate |
JPH0372524A (en) * | 1989-05-31 | 1991-03-27 | Mitsui Petrochem Ind Ltd | Polyethylene terephthalate |
JPH0372523A (en) * | 1989-05-31 | 1991-03-27 | Mitsui Petrochem Ind Ltd | Polyethylene terephthalate |
JPH03174441A (en) * | 1989-03-31 | 1991-07-29 | Mitsui Petrochem Ind Ltd | Method for treating polyethylene terephthalate |
JPH03215521A (en) * | 1989-03-31 | 1991-09-20 | Mitsui Petrochem Ind Ltd | Polyethylene terephthalate |
US5393863A (en) * | 1993-01-04 | 1995-02-28 | Eastman Chemicali Company | Production of branched polyesters |
US5393871A (en) * | 1993-01-04 | 1995-02-28 | Eastman Chemical Company | Production of polyesters and polyester articles having good clarity |
FR2786496A1 (en) * | 1998-11-27 | 2000-06-02 | Tergal Fibres | PROCESS FOR MANUFACTURING POLYESTER |
US6346070B1 (en) | 1998-12-25 | 2002-02-12 | Mitsui Chemicals Inc | Catalyst for polyester production, process for producing polyester using the catalyst, polyester obtained by the process, and uses of the polyester |
KR100697027B1 (en) * | 1998-12-25 | 2007-03-21 | 미쓰이 가가쿠 가부시키가이샤 | Catalyst for producing polyester, polyester production method which using the same, and polyester produced by the method and its use |
US8329857B2 (en) | 2006-08-02 | 2012-12-11 | Mitsubishi Chemical Corporation | Polyester resin particle and method for producing the same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51107346A (en) * | 1975-03-19 | 1976-09-22 | Kuraray Co | |
JPS5373288A (en) * | 1976-12-13 | 1978-06-29 | Teijin Ltd | Preparation of polyester pellets |
-
1978
- 1978-07-14 JP JP8575478A patent/JPS5513715A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51107346A (en) * | 1975-03-19 | 1976-09-22 | Kuraray Co | |
JPS5373288A (en) * | 1976-12-13 | 1978-06-29 | Teijin Ltd | Preparation of polyester pellets |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5891759A (en) * | 1981-11-26 | 1983-05-31 | Toray Ind Inc | Thermoplastic polyester composition |
JPH0143781B2 (en) * | 1981-11-26 | 1989-09-22 | Toray Industries | |
JPS59219328A (en) * | 1983-05-28 | 1984-12-10 | Toyobo Co Ltd | Production of high-polymerization degree polyester |
JPH0379373B2 (en) * | 1983-05-28 | 1991-12-18 | Toyo Boseki | |
JPH0347830A (en) * | 1989-03-31 | 1991-02-28 | Mitsui Petrochem Ind Ltd | Production of polyethylene terephthalate |
EP0867458A2 (en) * | 1989-03-31 | 1998-09-30 | Mitsui Chemicals, Inc. | Polyethylene terephthalate chip |
EP0867458A3 (en) * | 1989-03-31 | 1999-06-02 | Mitsui Chemicals, Inc. | Polyethylene terephthalate chip |
JPH037725A (en) * | 1989-03-31 | 1991-01-14 | Mitsui Petrochem Ind Ltd | Polyethylene terephthalate |
JPH03174441A (en) * | 1989-03-31 | 1991-07-29 | Mitsui Petrochem Ind Ltd | Method for treating polyethylene terephthalate |
JPH03215521A (en) * | 1989-03-31 | 1991-09-20 | Mitsui Petrochem Ind Ltd | Polyethylene terephthalate |
EP0389948A2 (en) * | 1989-03-31 | 1990-10-03 | Mitsui Petrochemical Industries, Ltd. | Process for treatment of polyethylene terephthalate, polyethylene terephthalate for molding purposes and process for preparation thereof |
JPH0372523A (en) * | 1989-05-31 | 1991-03-27 | Mitsui Petrochem Ind Ltd | Polyethylene terephthalate |
JPH0372524A (en) * | 1989-05-31 | 1991-03-27 | Mitsui Petrochem Ind Ltd | Polyethylene terephthalate |
US5393863A (en) * | 1993-01-04 | 1995-02-28 | Eastman Chemicali Company | Production of branched polyesters |
US5393871A (en) * | 1993-01-04 | 1995-02-28 | Eastman Chemical Company | Production of polyesters and polyester articles having good clarity |
FR2786496A1 (en) * | 1998-11-27 | 2000-06-02 | Tergal Fibres | PROCESS FOR MANUFACTURING POLYESTER |
WO2000032674A1 (en) * | 1998-11-27 | 2000-06-08 | Tergal Fibres | Method for making polyester |
WO2000032673A1 (en) * | 1998-11-27 | 2000-06-08 | Rhodia Ster S.A. | A process for manufacturing polyester |
US6346070B1 (en) | 1998-12-25 | 2002-02-12 | Mitsui Chemicals Inc | Catalyst for polyester production, process for producing polyester using the catalyst, polyester obtained by the process, and uses of the polyester |
EP1013692A3 (en) * | 1998-12-25 | 2004-06-09 | Mitsui Chemicals, Inc. | Catalyst for polyester production, process for producing polyester using the catalyst, polyester obtained by the process, and uses of the polyester |
KR100697027B1 (en) * | 1998-12-25 | 2007-03-21 | 미쓰이 가가쿠 가부시키가이샤 | Catalyst for producing polyester, polyester production method which using the same, and polyester produced by the method and its use |
USRE40571E1 (en) | 1998-12-25 | 2008-11-11 | Mitsui Chemicals, Inc. | Catalyst for polyester production, process for producing polyester using the catalyst, polyester obtained by the process, and uses of the polyester |
US8329857B2 (en) | 2006-08-02 | 2012-12-11 | Mitsubishi Chemical Corporation | Polyester resin particle and method for producing the same |
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