GB646099A - New pigments of the oxazine series - Google Patents

New pigments of the oxazine series

Info

Publication number
GB646099A
GB646099A GB1299048A GB1299048A GB646099A GB 646099 A GB646099 A GB 646099A GB 1299048 A GB1299048 A GB 1299048A GB 1299048 A GB1299048 A GB 1299048A GB 646099 A GB646099 A GB 646099A
Authority
GB
United Kingdom
Prior art keywords
benzoquinone
heating
diphenylamino
mols
bis
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
GB1299048A
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.)
ROBERT WILLIAM GUNN PRESTON
Imperial Chemical Industries Ltd
Original Assignee
ROBERT WILLIAM GUNN PRESTON
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 ROBERT WILLIAM GUNN PRESTON, Imperial Chemical Industries Ltd filed Critical ROBERT WILLIAM GUNN PRESTON
Priority to GB1299048A priority Critical patent/GB646099A/en
Publication of GB646099A publication Critical patent/GB646099A/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
    • C09B19/00—Oxazine dyes
    • C09B19/02—Bisoxazines prepared from aminoquinones

Abstract

2.5 - Bis - (41 - diphenylamino) - 1.4 - benzoquinone is made by heating 2 mols. 4-aminodiphenyl and 3 mols. benzoquinone in alcohol, removing the solvent, and extracting the hydroquinone formed with alkali. The 3.6-dichloro- and dibromo-derivatives are made by heating 4-aminodiphenyl with chloranil or bromanil in alcohol in presence of sodium acetate or bicarbonate.ALSO:2.9-Diphenyl-triphendioxazine which may be substituted by chlorine or bromine is made by heating in an organic liquid medium 2.5-bis-(41-diphenylamino)-1.4-benzoquinone or the 3.6-dichloro- or 3.6-dibromo-derivatives thereof. A ferric or phosphorus halide or an organic acid halide may be present, and an oxidizing agent such as m-nitrobenzene sulphonyl chloride. Examples using each of the three starting materials are given. The products are violet pigments and may be co-milled with an inorganic substrate according to the process of U.S.A. Specification 2,402,167. 2.5 - Bis - (41 - diphenylamino) - 1.4 - benzoquinone is made by heating 2 mols. 4-amino-diphenyl and 3 mols. benzoquinone in alcohol, removing the solvent, and extracting the hydroquinone formed with alkali. 2.5 - Bis - (41 - diphenylamino) - 3.6 - dichloro-or dibromo-1.4-benzoquinone is made by heating 4-aminodiphenyl with chloranil, or bromanil in alcohol in presence of sodium acetate or bicarbonate. Specifications 8886/12, [Class 2 (iii)], and 367,389 also are referred to.
GB1299048A 1948-05-12 1948-05-12 New pigments of the oxazine series Expired GB646099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1299048A GB646099A (en) 1948-05-12 1948-05-12 New pigments of the oxazine series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1299048A GB646099A (en) 1948-05-12 1948-05-12 New pigments of the oxazine series

Publications (1)

Publication Number Publication Date
GB646099A true GB646099A (en) 1950-11-15

Family

ID=10014807

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1299048A Expired GB646099A (en) 1948-05-12 1948-05-12 New pigments of the oxazine series

Country Status (1)

Country Link
GB (1) GB646099A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843498A (en) * 1954-03-23 1958-07-15 Du Pont Pigment composition
US3031321A (en) * 1959-07-24 1962-04-24 Eastman Kodak Co Cellulose organic ester compositions stabilized with 6, 13-dichloro-3, 10-diphenyl-triphenoldioxazine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843498A (en) * 1954-03-23 1958-07-15 Du Pont Pigment composition
US3031321A (en) * 1959-07-24 1962-04-24 Eastman Kodak Co Cellulose organic ester compositions stabilized with 6, 13-dichloro-3, 10-diphenyl-triphenoldioxazine

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