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GB1274048A - Process for the production of pure basic dyestuffs - Google Patents

Process for the production of pure basic dyestuffs

Info

Publication number
GB1274048A
GB1274048A GB3831169A GB3831169A GB1274048A GB 1274048 A GB1274048 A GB 1274048A GB 3831169 A GB3831169 A GB 3831169A GB 3831169 A GB3831169 A GB 3831169A GB 1274048 A GB1274048 A GB 1274048A
Authority
GB
United Kingdom
Prior art keywords
dye
production
purification
pure basic
basic dyestuffs
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
GB3831169A
Inventor
Gunther Boehmke
Hans Konig
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Priority to GB3831169A priority Critical patent/GB1274048A/en
Publication of GB1274048A publication Critical patent/GB1274048A/en
Expired legal-status Critical Current

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
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0096—Purification; Precipitation; Filtration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,274,048. Purification of basic dyes. FARBENFABRIKEN BAYER A.G. 30 July, 1969, No. 38311/69. Heading C4P. Pure basic dyes are obtained from solutions thereof containing impurities or by-products, by incorporating therein a water-soluble non-ionic wetting agent comprising the addition product of an alkylene oxide with a compound containing active H atoms and isolating the dye by crystallization. In examples the purification of (1-6) heterocyclic di- and aza-methine dyes: (7) an anthraquinone dye and (8) an monoazo dye, is described.
GB3831169A 1969-07-30 1969-07-30 Process for the production of pure basic dyestuffs Expired GB1274048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3831169A GB1274048A (en) 1969-07-30 1969-07-30 Process for the production of pure basic dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3831169A GB1274048A (en) 1969-07-30 1969-07-30 Process for the production of pure basic dyestuffs

Publications (1)

Publication Number Publication Date
GB1274048A true GB1274048A (en) 1972-05-10

Family

ID=10402626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3831169A Expired GB1274048A (en) 1969-07-30 1969-07-30 Process for the production of pure basic dyestuffs

Country Status (1)

Country Link
GB (1) GB1274048A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309178A (en) 1979-10-22 1982-01-05 Cassella Aktiengesellschaft Process for isolating sulphur dyestuffs from aqueous crude melts containing sodium polysulphide
EP0047170A1 (en) * 1980-09-01 1982-03-10 EASTMAN KODAK COMPANY (a New Jersey corporation) Method of recovering a photographic addendum from a dispersion thereof
WO1998001445A1 (en) * 1996-07-09 1998-01-15 Smithkline Beecham S.P.A. Indole derivatives for the treatment of osteoporosis

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309178A (en) 1979-10-22 1982-01-05 Cassella Aktiengesellschaft Process for isolating sulphur dyestuffs from aqueous crude melts containing sodium polysulphide
EP0047170A1 (en) * 1980-09-01 1982-03-10 EASTMAN KODAK COMPANY (a New Jersey corporation) Method of recovering a photographic addendum from a dispersion thereof
WO1982000901A1 (en) * 1980-09-01 1982-03-18 Young D Method of recovering a photographic addendum from a dispersion thereof
WO1998001445A1 (en) * 1996-07-09 1998-01-15 Smithkline Beecham S.P.A. Indole derivatives for the treatment of osteoporosis
US5985905A (en) * 1996-07-09 1999-11-16 Farina; Carlo Indole derivatives for the treatment of osteoporosis

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee