GB1467548A - Alumina hydrate lake process - Google Patents
Alumina hydrate lake processInfo
- Publication number
- GB1467548A GB1467548A GB2988075A GB2988075A GB1467548A GB 1467548 A GB1467548 A GB 1467548A GB 2988075 A GB2988075 A GB 2988075A GB 2988075 A GB2988075 A GB 2988075A GB 1467548 A GB1467548 A GB 1467548A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alumina hydrate
- chloride
- alumina
- lake process
- added
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B63/00—Lakes
- C09B63/005—Metal lakes of dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
1467548 Aluminium lake process COLORCON Inc 16 July 1975 29880/75 Heading C4P Alumina lakes particularly for use in colouring foods and pharmaceuticals are obtained by laking a F.D. and C dye containing an acid group with alumina hydrate obtained by mixing aluminium chloride with aqueous sodium bicarbonate at a temperature not higher than 20‹ C. Preferably the chloride is added as an aqueous solution in a weight ratio of NaHCO 3 to AlCl 3 of 555 to 1000, and the precipitated alumina hydrate subsequently ground and then the dye dissolved in water added at 20-60‹ C. and the cake dried at 50‹ C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2988075A GB1467548A (en) | 1975-07-16 | 1975-07-16 | Alumina hydrate lake process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2988075A GB1467548A (en) | 1975-07-16 | 1975-07-16 | Alumina hydrate lake process |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1467548A true GB1467548A (en) | 1977-03-16 |
Family
ID=10298694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2988075A Expired GB1467548A (en) | 1975-07-16 | 1975-07-16 | Alumina hydrate lake process |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1467548A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0576848A1 (en) * | 1992-07-03 | 1994-01-05 | R.P. Scherer GmbH | Printed articles and films containing gelatine, process and means for printing |
EP1798262A1 (en) * | 2005-12-15 | 2007-06-20 | Lcw - Les Colorants Wackherr | Blue lakes comprising natural dyestuff |
-
1975
- 1975-07-16 GB GB2988075A patent/GB1467548A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0576848A1 (en) * | 1992-07-03 | 1994-01-05 | R.P. Scherer GmbH | Printed articles and films containing gelatine, process and means for printing |
US5529767A (en) * | 1992-07-03 | 1996-06-25 | R. P. Scherer Corporation | Printed shaped bodies and sheets containing gelatin |
EP1798262A1 (en) * | 2005-12-15 | 2007-06-20 | Lcw - Les Colorants Wackherr | Blue lakes comprising natural dyestuff |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |