GB981449A - Preparation of quinacridone pigments - Google Patents

Preparation of quinacridone pigments

Info

Publication number
GB981449A
GB981449A GB4073263A GB4073263A GB981449A GB 981449 A GB981449 A GB 981449A GB 4073263 A GB4073263 A GB 4073263A GB 4073263 A GB4073263 A GB 4073263A GB 981449 A GB981449 A GB 981449A
Authority
GB
United Kingdom
Prior art keywords
water
solution
acid
quinacridone
polyphosphoric acid
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
GB4073263A
Inventor
Herman Gerson
John Francis Santimauro
Vincent Charles Vesce
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.)
Allied Corp
Original Assignee
Allied Chemical Corp
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
Priority to DEA45977A priority Critical patent/DE1275028B/en
Application filed by Allied Chemical Corp filed Critical Allied Chemical Corp
Priority to GB4073263A priority patent/GB981449A/en
Publication of GB981449A publication Critical patent/GB981449A/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
    • C09B67/00Influencing 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
    • C09B67/0001Post-treatment of organic pigments or dyes
    • C09B67/0017Influencing the physical properties by treatment with an acid, H2SO4
    • 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
    • C09B48/00Quinacridones

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

Quinacridone is precipitated from a polyphosphoric acid solution thereof by dilution with an organic, water-miscible liquid, the said solution being prepared otherwise than by the ring-closure of a 2:5-diarylamino-terephthalic acid by heating with at least an equal weight of a polyphosphoric acid having an orthophosphoric acid equivalent of at least 105%. The solution may first be diluted with water or dilute orthophosphoric acid. Organic liquids specified are methanol, ethanol, isopropanol, glycerol, diacetone alcohol, diethylene glycol, acetone or mixtures thereof with water, or a mixture of denatured alcohol, ethyl acetate and aviation gasoline. Examples are given in which the solutions are made by dissolving quinacridone in polyphosphoric acid. Specifications 828,051, 828,052 and 884,044 also are referred to.
GB4073263A 1961-12-22 1962-10-18 Preparation of quinacridone pigments Expired GB981449A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEA45977A DE1275028B (en) 1961-12-22 1961-12-22 Process for the preparation of a finely divided quinacridone
GB4073263A GB981449A (en) 1962-10-18 1962-10-18 Preparation of quinacridone pigments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4073263A GB981449A (en) 1962-10-18 1962-10-18 Preparation of quinacridone pigments

Publications (1)

Publication Number Publication Date
GB981449A true GB981449A (en) 1965-01-27

Family

ID=10416344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4073263A Expired GB981449A (en) 1961-12-22 1962-10-18 Preparation of quinacridone pigments

Country Status (1)

Country Link
GB (1) GB981449A (en)

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