GB1026875A - Process for increasing the surface area of organic dyestuffs and pigments - Google Patents

Process for increasing the surface area of organic dyestuffs and pigments

Info

Publication number
GB1026875A
GB1026875A GB4523061A GB4523061A GB1026875A GB 1026875 A GB1026875 A GB 1026875A GB 4523061 A GB4523061 A GB 4523061A GB 4523061 A GB4523061 A GB 4523061A GB 1026875 A GB1026875 A GB 1026875A
Authority
GB
United Kingdom
Prior art keywords
pigment
dyestuff
pigments
increasing
surface area
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
GB4523061A
Inventor
Colin Clarkson
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB4523061A priority Critical patent/GB1026875A/en
Publication of GB1026875A publication Critical patent/GB1026875A/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
    • C09B67/0017—Influencing the physical properties by treatment with an acid, H2SO4
    • C09B67/0019—Influencing the physical properties by treatment with an acid, H2SO4 of phthalocyanines
    • 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
    • C09B67/0017—Influencing the physical properties by treatment with an acid, H2SO4

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Abstract

The surface are of a crude pigment or dyestuff is increased by thoroughly mixing the pigment or dyestuff with a quantity of sulphuric acid which is sufficient to convert the pigment into its sulphate but insufficient to prevent the formation of a free-flowing powder, and subsequently mixing said free-flowing powder with water. The dyestuff or pigment may subsequently be milled, for example, with sand and water or an organic solvent. Examples illustrate the treatment of copper phthalo-cyanine, copper chlorophthalocyanine, 16:17 - dimethoxydibenzanthrone, 7:16 - dichloro-6:15-indanthrone and and 1:4:5:8-tetraamino-anthraquinone.
GB4523061A 1961-12-18 1961-12-18 Process for increasing the surface area of organic dyestuffs and pigments Expired GB1026875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4523061A GB1026875A (en) 1961-12-18 1961-12-18 Process for increasing the surface area of organic dyestuffs and pigments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4523061A GB1026875A (en) 1961-12-18 1961-12-18 Process for increasing the surface area of organic dyestuffs and pigments

Publications (1)

Publication Number Publication Date
GB1026875A true GB1026875A (en) 1966-04-20

Family

ID=10436395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4523061A Expired GB1026875A (en) 1961-12-18 1961-12-18 Process for increasing the surface area of organic dyestuffs and pigments

Country Status (1)

Country Link
GB (1) GB1026875A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2211514A1 (en) * 1972-12-22 1974-07-19 Hoechst Ag
FR2211512A1 (en) * 1972-12-22 1974-07-19 Hoechst Ag
EP0271403A2 (en) * 1986-12-11 1988-06-15 Sumitomo Chemical Company, Limited A process for producing dioxazine violet pigment
EP0318819A2 (en) * 1987-12-03 1989-06-07 BASF Aktiengesellschaft Process for the manufacture of a lake pigment in the form of soft particles with a high colouring capability

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2211514A1 (en) * 1972-12-22 1974-07-19 Hoechst Ag
FR2211512A1 (en) * 1972-12-22 1974-07-19 Hoechst Ag
EP0271403A2 (en) * 1986-12-11 1988-06-15 Sumitomo Chemical Company, Limited A process for producing dioxazine violet pigment
EP0271403A3 (en) * 1986-12-11 1990-01-10 Sumitomo Chemical Company, Limited A process for producing dioxazine violet pigment
EP0318819A2 (en) * 1987-12-03 1989-06-07 BASF Aktiengesellschaft Process for the manufacture of a lake pigment in the form of soft particles with a high colouring capability
EP0318819A3 (en) * 1987-12-03 1991-05-08 BASF Aktiengesellschaft Process for the manufacture of a lake pigment in the form of soft particles with a high colouring capability

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