BE547079A - - Google Patents
Info
- Publication number
- BE547079A BE547079A BE547079DA BE547079A BE 547079 A BE547079 A BE 547079A BE 547079D A BE547079D A BE 547079DA BE 547079 A BE547079 A BE 547079A
- Authority
- BE
- Belgium
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
-
- 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
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
- C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1056128X | 1955-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE547079A true BE547079A (en) |
Family
ID=9597307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE547079D BE547079A (en) | 1955-04-20 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE547079A (en) |
| DE (1) | DE1056128B (en) |
| FR (1) | FR1125014A (en) |
| GB (1) | GB833230A (en) |
| NL (1) | NL98195C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3072717A (en) * | 1957-11-29 | 1963-01-08 | Celanese Corp | Recovery of isophthalic and terephthalic acids |
| NL275610A (en) * | 1961-03-06 | |||
| BE792879A (en) * | 1971-12-17 | 1973-03-30 | Chevron Res | MALEIC ANHYDRIDE ISOLATION PROCESS |
| DE2855630C2 (en) * | 1978-12-22 | 1982-09-16 | Davy McKee AG, 6000 Frankfurt | Process for the continuous separation of phthalic anhydride from the reaction gases of the catalytic oxidation of o-xylene and / or naphthalene |
| DE2855629C2 (en) * | 1978-12-22 | 1986-11-13 | Davy McKee AG, 6000 Frankfurt | Process for the continuous separation of phthalic anhydride from the reaction gases of the catalytic oxidation of o-xylene and / or naphthalene |
| DE3207208A1 (en) * | 1982-02-27 | 1983-09-08 | Basf Ag, 6700 Ludwigshafen | METHOD FOR THE CONTINUOUS PRODUCTION OF PHTHALIC ACID ANHYDRIDE AND MALEIC ACID ANHYDRIDE FROM REACTION GASES |
| ZA973972B (en) * | 1996-05-14 | 1998-03-23 | Kvaerner Process Tech Ltd | A process for the production of at least one C4 compound selected from butane-1,4-diol, gamma-butyrolactone and tetrahydrofuran. |
| ZA973971B (en) * | 1996-05-15 | 1998-03-23 | Kvaerner Process Tech Ltd | A process for the production of at least one C4 compound selected from butane-1,4-diol, gamma-butyrolactone and tetrahydrofuran. |
| US5718808A (en) * | 1996-11-29 | 1998-02-17 | Exxon Chemical Patents Inc. | Solvent assisted process for recovery of phthalic anhydride in the liquid phase by distillation |
| GB9724004D0 (en) | 1997-11-13 | 1998-10-21 | Kvaerner Process Tech Ltd | Process |
| GB9724195D0 (en) | 1997-11-14 | 1998-01-14 | Kvaerner Process Tech Ltd | Process |
| ES2158645T3 (en) | 1998-03-23 | 2001-09-01 | Basf Ag | PROCEDURE FOR THE PREPARATION OF 1,4-BUTANODIOL, BUTIROLACTONE AND TETRAHYDROFURAN. |
-
0
- NL NL98195D patent/NL98195C/xx active
- BE BE547079D patent/BE547079A/xx unknown
-
1955
- 1955-04-20 FR FR1125014D patent/FR1125014A/en not_active Expired
-
1956
- 1956-04-19 DE DES48406A patent/DE1056128B/en active Pending
- 1956-04-20 GB GB12196/56A patent/GB833230A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1056128B (en) | 1959-04-30 |
| GB833230A (en) | 1960-04-21 |
| FR1125014A (en) | 1956-10-23 |
| NL98195C (en) |