JPS5414934A - Device for preparing phthalic anhydride from adhesive moisture-containing phthalic acid - Google Patents
Device for preparing phthalic anhydride from adhesive moisture-containing phthalic acidInfo
- Publication number
- JPS5414934A JPS5414934A JP7979377A JP7979377A JPS5414934A JP S5414934 A JPS5414934 A JP S5414934A JP 7979377 A JP7979377 A JP 7979377A JP 7979377 A JP7979377 A JP 7979377A JP S5414934 A JPS5414934 A JP S5414934A
- Authority
- JP
- Japan
- Prior art keywords
- phthalic anhydride
- adhesive moisture
- phthalic acid
- phthalic
- preparing
- 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 prepare phthalic anhydride with ease continuously, by pouring powdered or granular phthalic acid containing adhesive moisture into a high-temperature phthalic anhydride fluid to vaporize the adhesive moisture, which is discharged, and by intramolecular dehydration of phthalic acid in the phthalic anhydride under heating.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7979377A JPS5414934A (en) | 1977-07-06 | 1977-07-06 | Device for preparing phthalic anhydride from adhesive moisture-containing phthalic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7979377A JPS5414934A (en) | 1977-07-06 | 1977-07-06 | Device for preparing phthalic anhydride from adhesive moisture-containing phthalic acid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5414934A true JPS5414934A (en) | 1979-02-03 |
JPS5753795B2 JPS5753795B2 (en) | 1982-11-15 |
Family
ID=13700086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7979377A Granted JPS5414934A (en) | 1977-07-06 | 1977-07-06 | Device for preparing phthalic anhydride from adhesive moisture-containing phthalic acid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5414934A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60145790U (en) * | 1984-03-08 | 1985-09-27 | オンキヨー株式会社 | dome type speaker |
JPH0193898U (en) * | 1987-12-14 | 1989-06-20 |
-
1977
- 1977-07-06 JP JP7979377A patent/JPS5414934A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5753795B2 (en) | 1982-11-15 |
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