BE732838A - - Google Patents
Info
- Publication number
- BE732838A BE732838A BE732838DA BE732838A BE 732838 A BE732838 A BE 732838A BE 732838D A BE732838D A BE 732838DA BE 732838 A BE732838 A BE 732838A
- Authority
- BE
- Belgium
- Prior art keywords
- acid
- pressure
- terephthalic acid
- temperature
- sep
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE732838 | 1969-05-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE732838A true BE732838A (de) | 1969-10-16 |
Family
ID=3854732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE732838D BE732838A (de) | 1969-05-09 | 1969-05-09 |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE732838A (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998024749A1 (en) * | 1996-12-06 | 1998-06-11 | Hfm International, Inc. | Method and apparatus for preparing purified terephthalic acid |
US5929274A (en) | 1995-06-07 | 1999-07-27 | Hfm International, Inc. | Method to reduce carboxybenzaldehyde isomers in terephthalic acid or isophthalic acid |
US6054610A (en) | 1995-06-07 | 2000-04-25 | Hfm International, Inc. | Method and apparatus for preparing purified terephthalic acid and isophthalic acid from mixed xylenes |
-
1969
- 1969-05-09 BE BE732838D patent/BE732838A/fr unknown
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5929274A (en) | 1995-06-07 | 1999-07-27 | Hfm International, Inc. | Method to reduce carboxybenzaldehyde isomers in terephthalic acid or isophthalic acid |
US6013835A (en) | 1995-06-07 | 2000-01-11 | Hfm International, Inc. | Method and apparatus for preparing purified terephthalic acid |
US6054610A (en) | 1995-06-07 | 2000-04-25 | Hfm International, Inc. | Method and apparatus for preparing purified terephthalic acid and isophthalic acid from mixed xylenes |
US6113866A (en) | 1995-06-07 | 2000-09-05 | Hfm International, Inc. | Apparatus for preparing purified terephthalic acid |
WO1998024749A1 (en) * | 1996-12-06 | 1998-06-11 | Hfm International, Inc. | Method and apparatus for preparing purified terephthalic acid |
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