GB1467548A - Alumina hydrate lake process - Google Patents

Alumina hydrate lake process

Info

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
lake
chloride
alumina
dye
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
Application number
GB2988075A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Colorcon Inc
Original Assignee
Colorcon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Colorcon Inc filed Critical Colorcon Inc
Priority to GB2988075A priority Critical patent/GB1467548A/en
Publication of GB1467548A publication Critical patent/GB1467548A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B63/00Lakes
    • C09B63/005Metal lakes of dyes

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.
GB2988075A 1975-07-16 1975-07-16 Alumina hydrate lake process Expired GB1467548A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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