BE627879A - - Google Patents
Info
- Publication number
- BE627879A BE627879A BE627879DA BE627879A BE 627879 A BE627879 A BE 627879A BE 627879D A BE627879D A BE 627879DA BE 627879 A BE627879 A BE 627879A
- Authority
- BE
- Belgium
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/30—Developers
- G03C5/3028—Heterocyclic compounds
- G03C5/3035—Heterocyclic compounds containing a diazole ring
-
- 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
- C07C51/56—Preparation of carboxylic acid anhydrides from organic acids, their salts, their esters or their halides, e.g. by carboxylation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
- C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
- C07D231/06—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D231/08—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with oxygen or sulfur atoms directly attached to ring carbon atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Plural Heterocyclic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE2042328 | 1963-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE627879A true BE627879A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=3864793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE627879D BE627879A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1963-02-12 |
Country Status (5)
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE628285A (nl) * | 1963-02-12 | 1963-05-29 | Gevaert Photo Prod Nv | Bereiding van 3-pyrazolidinonen |
-
0
- BE BE627879D patent/BE627879A/xx unknown
-
1963
- 1963-03-02 DE DEG37188A patent/DE1241456B/de active Pending
-
1964
- 1964-02-10 US US343511A patent/US3330839A/en not_active Expired - Lifetime
- 1964-02-10 GB GB5419/64A patent/GB1055531A/en not_active Expired
- 1964-02-11 CH CH157764A patent/CH420171A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1055531A (en) | 1967-01-18 |
| US3330839A (en) | 1967-07-11 |
| CH420171A (fr) | 1966-09-15 |
| DE1241456B (de) | 1967-06-01 |