JPS54118493A - Production of polyester - Google Patents
Production of polyesterInfo
- Publication number
- JPS54118493A JPS54118493A JP2617178A JP2617178A JPS54118493A JP S54118493 A JPS54118493 A JP S54118493A JP 2617178 A JP2617178 A JP 2617178A JP 2617178 A JP2617178 A JP 2617178A JP S54118493 A JPS54118493 A JP S54118493A
- Authority
- JP
- Japan
- Prior art keywords
- terephthalic acid
- exhaust gas
- contact
- polyester
- acid
- 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.)
- Granted
Links
Abstract
PURPOSE: To obtain a polyester having improved color tone in both yellowness and lightness, by reacting (A) a raw material terephthalic acid previously in contact with the exhaust gas from a production process of terephthalic acid with (B) ethylene glycol.
CONSTITUTION: A material terephthalic acid is brought into contact with a gas obtained by recovering acetic acid from an exhaust gas emitted in an oxidation reactor wherein p-xylene is oxidized by molecular oxygen in the presence of a heavy metal catalyst in a solvent of acetic acid in the production of a polyester from terephthalic acid and ethylene glycol. The reason why improved color tone in both yellowness and lightness is obtained by the contact is presumed that properites of the material phthalic acid are effected by the interaction of the substances existing in a trace amount such as acetaldehyde, methyl acetate, methanol, and other various ingredients contained in the oxidation exhaust gas.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2617178A JPS54118493A (en) | 1978-03-08 | 1978-03-08 | Production of polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2617178A JPS54118493A (en) | 1978-03-08 | 1978-03-08 | Production of polyester |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54118493A true JPS54118493A (en) | 1979-09-13 |
JPS616848B2 JPS616848B2 (en) | 1986-03-01 |
Family
ID=12186083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2617178A Granted JPS54118493A (en) | 1978-03-08 | 1978-03-08 | Production of polyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54118493A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105126547A (en) * | 2015-08-14 | 2015-12-09 | 桐昆集团股份有限公司 | Polyester process exhaust organic matter recovery device |
-
1978
- 1978-03-08 JP JP2617178A patent/JPS54118493A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105126547A (en) * | 2015-08-14 | 2015-12-09 | 桐昆集团股份有限公司 | Polyester process exhaust organic matter recovery device |
Also Published As
Publication number | Publication date |
---|---|
JPS616848B2 (en) | 1986-03-01 |
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