GB1549533A - Process for the purification of phthalic anhydride - Google Patents
Process for the purification of phthalic anhydrideInfo
- Publication number
- GB1549533A GB1549533A GB4245977A GB4245977A GB1549533A GB 1549533 A GB1549533 A GB 1549533A GB 4245977 A GB4245977 A GB 4245977A GB 4245977 A GB4245977 A GB 4245977A GB 1549533 A GB1549533 A GB 1549533A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phthalic anhydride
- purification
- crystallising
- plasticisers
- purified
- 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.)
- Expired
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
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/573—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Furan Compounds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762646808 DE2646808C3 (de) | 1976-10-16 | 1976-10-16 | Verfahren zur Reinigung von im Zuge der Anthrachinonherstellung erhaltenem Phthalsäureanhydrid |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1549533A true GB1549533A (en) | 1979-08-08 |
Family
ID=5990635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4245977A Expired GB1549533A (en) | 1976-10-16 | 1977-10-12 | Process for the purification of phthalic anhydride |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5845436B2 (ja) |
BE (1) | BE859720A (ja) |
CH (1) | CH633549A5 (ja) |
DE (1) | DE2646808C3 (ja) |
FR (1) | FR2367759A1 (ja) |
GB (1) | GB1549533A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117986217A (zh) * | 2024-04-03 | 2024-05-07 | 南京化学试剂股份有限公司 | 一种高含量苯酐原料处理方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114853705A (zh) * | 2022-04-24 | 2022-08-05 | 河北海力香料股份有限公司 | 一种4-氯代邻苯二甲酸单钠盐反应母液回收制备氯代邻苯二甲酸酐的方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR648163A (fr) * | 1927-05-13 | 1928-12-06 | Cie Nat Matieres Colorantes | Procédé de purification de l'anhydride phtalique brut obtenu par catalyse |
FR1429745A (fr) * | 1964-04-02 | 1966-02-25 | Basf Ag | Procédé pour la production d'anhydride phtalique pur à partir d'o-xylène |
DE2245555C2 (de) * | 1972-09-16 | 1982-06-09 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von Anthrachinon |
RO59914A (ja) * | 1972-04-15 | 1976-06-15 |
-
1976
- 1976-10-16 DE DE19762646808 patent/DE2646808C3/de not_active Expired
-
1977
- 1977-10-11 CH CH1241677A patent/CH633549A5/de not_active IP Right Cessation
- 1977-10-12 GB GB4245977A patent/GB1549533A/en not_active Expired
- 1977-10-14 FR FR7731062A patent/FR2367759A1/fr active Granted
- 1977-10-14 BE BE2056340A patent/BE859720A/xx unknown
- 1977-10-14 JP JP52122558A patent/JPS5845436B2/ja not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117986217A (zh) * | 2024-04-03 | 2024-05-07 | 南京化学试剂股份有限公司 | 一种高含量苯酐原料处理方法 |
CN117986217B (zh) * | 2024-04-03 | 2024-06-04 | 南京化学试剂股份有限公司 | 一种苯酐原料处理方法 |
Also Published As
Publication number | Publication date |
---|---|
JPS5845436B2 (ja) | 1983-10-08 |
JPS5350132A (en) | 1978-05-08 |
DE2646808B2 (de) | 1979-01-25 |
CH633549A5 (en) | 1982-12-15 |
BE859720A (fr) | 1978-04-14 |
DE2646808C3 (de) | 1979-09-20 |
DE2646808A1 (de) | 1978-04-20 |
FR2367759A1 (fr) | 1978-05-12 |
FR2367759B1 (ja) | 1982-11-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |