JPS57147516A - Preparation of polyester - Google Patents
Preparation of polyesterInfo
- Publication number
- JPS57147516A JPS57147516A JP3119081A JP3119081A JPS57147516A JP S57147516 A JPS57147516 A JP S57147516A JP 3119081 A JP3119081 A JP 3119081A JP 3119081 A JP3119081 A JP 3119081A JP S57147516 A JPS57147516 A JP S57147516A
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- reaction
- component
- acid
- butanediol
- 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
Landscapes
- Polyesters Or Polycarbonates (AREA)
Abstract
PURPOSE: To prepare a polyester having low terminal carboxyl group concentration and excellent heat resistance, easily, by adding an alkaline metallic compound to the reaction system before the completion of the melt polymerization reaction of an aromatic dicarboxylic acid, etc. with butanediol, etc.
CONSTITUTION: The objective polyester is prepared by reacting (A) an acid component composed mainly of an aromatic dicarboxylic acid (preferably terephthalic acid) with (B) a glycol component composed mainly of 1,4-butanediol, and before the completion of the reaction, adding (C) an alkaline metallic compound (preferably an alkali metal compound such as NaOH) to the reaction system. The amount of the component (C) is preferably 20W500ppm based on the total acid component of the polyester. The addition of the component (C) is preferably carried out between the initiation of the esterification or the ester exchange reaction and the initial polymerization reaction.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3119081A JPS57147516A (en) | 1981-03-06 | 1981-03-06 | Preparation of polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3119081A JPS57147516A (en) | 1981-03-06 | 1981-03-06 | Preparation of polyester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57147516A true JPS57147516A (en) | 1982-09-11 |
Family
ID=12324505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3119081A Pending JPS57147516A (en) | 1981-03-06 | 1981-03-06 | Preparation of polyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57147516A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5709916A (en) * | 1995-07-27 | 1998-01-20 | Teijin Limited | Polybutylene terephthalate having low carboxyl group concentration and loose tube for optical fiber comprising the same |
JP2001114884A (en) * | 1999-10-15 | 2001-04-24 | Toray Ind Inc | Method for producing polybutylene terephthalate |
JP2007119738A (en) * | 2005-09-30 | 2007-05-17 | Mitsubishi Chemicals Corp | Method for producing polybutylene terephthalate |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4836195A (en) * | 1971-09-13 | 1973-05-28 | ||
JPS4920295A (en) * | 1972-06-19 | 1974-02-22 | ||
JPS50127954A (en) * | 1974-03-29 | 1975-10-08 | ||
JPS5286493A (en) * | 1976-01-12 | 1977-07-18 | Teijin Ltd | Preparation of polyesters |
JPS5335795A (en) * | 1976-09-16 | 1978-04-03 | Teijin Ltd | Preparation of polyester |
JPS5533696A (en) * | 1979-07-17 | 1980-03-08 | Nikkiso Co Ltd | Sampling method and apparatus for atomic power plant |
JPS5785818A (en) * | 1980-11-18 | 1982-05-28 | Mitsubishi Chem Ind Ltd | Production of polybutylene terephthalate |
-
1981
- 1981-03-06 JP JP3119081A patent/JPS57147516A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4836195A (en) * | 1971-09-13 | 1973-05-28 | ||
JPS4920295A (en) * | 1972-06-19 | 1974-02-22 | ||
JPS50127954A (en) * | 1974-03-29 | 1975-10-08 | ||
JPS5286493A (en) * | 1976-01-12 | 1977-07-18 | Teijin Ltd | Preparation of polyesters |
JPS5335795A (en) * | 1976-09-16 | 1978-04-03 | Teijin Ltd | Preparation of polyester |
JPS5533696A (en) * | 1979-07-17 | 1980-03-08 | Nikkiso Co Ltd | Sampling method and apparatus for atomic power plant |
JPS5785818A (en) * | 1980-11-18 | 1982-05-28 | Mitsubishi Chem Ind Ltd | Production of polybutylene terephthalate |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5709916A (en) * | 1995-07-27 | 1998-01-20 | Teijin Limited | Polybutylene terephthalate having low carboxyl group concentration and loose tube for optical fiber comprising the same |
JP2001114884A (en) * | 1999-10-15 | 2001-04-24 | Toray Ind Inc | Method for producing polybutylene terephthalate |
JP4552243B2 (en) * | 1999-10-15 | 2010-09-29 | 東レ株式会社 | Process for producing polybutylene terephthalate |
JP2007119738A (en) * | 2005-09-30 | 2007-05-17 | Mitsubishi Chemicals Corp | Method for producing polybutylene terephthalate |
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