GB1497964A - Process for conditioning a 4,4',7,7'-tetrachlorothioindigo pigment - Google Patents

Process for conditioning a 4,4',7,7'-tetrachlorothioindigo pigment

Info

Publication number
GB1497964A
GB1497964A GB471776A GB471776A GB1497964A GB 1497964 A GB1497964 A GB 1497964A GB 471776 A GB471776 A GB 471776A GB 471776 A GB471776 A GB 471776A GB 1497964 A GB1497964 A GB 1497964A
Authority
GB
United Kingdom
Prior art keywords
tetrachlorothioindigo
precipitate
feb
weight
organic liquid
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
GB471776A
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.)
Hoechst AG
Original Assignee
Hoechst 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 Hoechst AG filed Critical Hoechst AG
Publication of GB1497964A publication Critical patent/GB1497964A/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
    • C09B67/0001—Post-treatment of organic pigments or dyes
    • 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
    • C09B7/00—Indigoid dyes
    • C09B7/10—Bis-thionapthene indigos

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

1497964 Preparing pigmentary 4,4<SP>1</SP>,7,7<SP>1</SP>-tetrachlorothioindigo HOECHST AG 6 Feb 1976 [6 Feb 1975] 04717/76 Heading C4P 4,4<SP>1</SP>-7,7<SP>1</SP>-Tetrachlorothioindigo is conditioned by dissolving the pigment having a purity of at least 80% by weight in chlorosulphonic acid, hydrolysing the resulting solution at below 20‹ C., isolating the precipitate formed and after treating it with an organic liquid. 15-25 Times by weight of acid is used and hydrolysis takes place using ice or icewater. Separation of the precipitate is by centrifuge or suction filtration, and the precipitate may be washed neutral or dried before treatment with an organic liquid, e.g. C 1 -C 4 alkanol, di(C 1 -C 4 )alkyl ketones, hydrocarbons, e.g. benzene, halogenated hydrocarbons, e.g. mono-, di- and tri-chlorobenzenes, and C 1 -C 4 alkyl esters of alkanoic and benzoic acids, at 20-180‹ C. The pigments have improved properties for colouring plastics and lacquers.
GB471776A 1975-02-06 1976-02-06 Process for conditioning a 4,4',7,7'-tetrachlorothioindigo pigment Expired GB1497964A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752504962 DE2504962A1 (en) 1975-02-06 1975-02-06 PROCESS FOR PREPARING A 4,4 ', 7,7'-TETRACHLORTHIOINDIGOPIGMENT

Publications (1)

Publication Number Publication Date
GB1497964A true GB1497964A (en) 1978-01-12

Family

ID=5938239

Family Applications (1)

Application Number Title Priority Date Filing Date
GB471776A Expired GB1497964A (en) 1975-02-06 1976-02-06 Process for conditioning a 4,4',7,7'-tetrachlorothioindigo pigment

Country Status (4)

Country Link
JP (1) JPS51138723A (en)
DE (1) DE2504962A1 (en)
FR (1) FR2300117A1 (en)
GB (1) GB1497964A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689087A (en) * 1982-08-13 1987-08-25 Hoechst Aktiengesellschaft Process for the preparation of an organic pigment on the basis of 4,4',7,7'-tetrachloro-thio-indigo

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101873A1 (en) * 1981-01-22 1982-08-26 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING COLORFUL 4,4 ', 7,7'-TETRACHLORTHIOINDIGOPIGMENTS
DE3319450A1 (en) * 1983-05-28 1984-11-29 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING 4,4 ', 7,7'-TETRACHLORTHIOINDIGO PIGMENTS
DE3324879A1 (en) * 1983-07-09 1985-01-17 Hoechst Ag, 6230 Frankfurt METHOD FOR PRODUCING A PIGMENT BASED ON 4,4 ', 7,7'-TETRACHLORTHIOINDIGO

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB503666A (en) * 1936-07-23 1939-04-12 Ig Farbenindustrie Ag Improvements in the manufacture and production of organic body colours
US2262229A (en) * 1939-06-24 1941-11-11 Interchem Corp Pigment and method of preparation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689087A (en) * 1982-08-13 1987-08-25 Hoechst Aktiengesellschaft Process for the preparation of an organic pigment on the basis of 4,4',7,7'-tetrachloro-thio-indigo

Also Published As

Publication number Publication date
FR2300117A1 (en) 1976-09-03
DE2504962A1 (en) 1976-08-19
JPS51138723A (en) 1976-11-30

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Legal Events

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