JPS53137926A - Treatment of residue of distillation of phthalic anhydride - Google Patents
Treatment of residue of distillation of phthalic anhydrideInfo
- Publication number
- JPS53137926A JPS53137926A JP5122777A JP5122777A JPS53137926A JP S53137926 A JPS53137926 A JP S53137926A JP 5122777 A JP5122777 A JP 5122777A JP 5122777 A JP5122777 A JP 5122777A JP S53137926 A JPS53137926 A JP S53137926A
- Authority
- JP
- Japan
- Prior art keywords
- phthalic anhydride
- residue
- distillation
- treatment
- naphthalene
- 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
Landscapes
- Furan Compounds (AREA)
Abstract
PURPOSE: To recover the residual phthalic anhydride from the distillation residue of crude phthalic anhydride which is obtained by the catalytic air oxidation of naphthalene, by separating thereof as a residue, using a thin film evaporator.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52051227A JPS5845435B2 (en) | 1977-05-06 | 1977-05-06 | Processing method for phthalic anhydride distillation residue |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52051227A JPS5845435B2 (en) | 1977-05-06 | 1977-05-06 | Processing method for phthalic anhydride distillation residue |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53137926A true JPS53137926A (en) | 1978-12-01 |
JPS5845435B2 JPS5845435B2 (en) | 1983-10-08 |
Family
ID=12881052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52051227A Expired JPS5845435B2 (en) | 1977-05-06 | 1977-05-06 | Processing method for phthalic anhydride distillation residue |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5845435B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003507447A (en) * | 1999-08-20 | 2003-02-25 | ビーエーエスエフ アクチェンゲゼルシャフト | A method for producing phthalic anhydride that meets specifications |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3380896A (en) * | 1965-05-04 | 1968-04-30 | Metallgesellschaft Ag | High purification of phthalic anhydride by multi-stage reduced pressure distillation |
JPS5029526A (en) * | 1973-04-05 | 1975-03-25 |
-
1977
- 1977-05-06 JP JP52051227A patent/JPS5845435B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3380896A (en) * | 1965-05-04 | 1968-04-30 | Metallgesellschaft Ag | High purification of phthalic anhydride by multi-stage reduced pressure distillation |
JPS5029526A (en) * | 1973-04-05 | 1975-03-25 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003507447A (en) * | 1999-08-20 | 2003-02-25 | ビーエーエスエフ アクチェンゲゼルシャフト | A method for producing phthalic anhydride that meets specifications |
JP4791666B2 (en) * | 1999-08-20 | 2011-10-12 | ビーエーエスエフ ソシエタス・ヨーロピア | A method to produce phthalic anhydride that meets standards |
Also Published As
Publication number | Publication date |
---|---|
JPS5845435B2 (en) | 1983-10-08 |
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