GB1181951A - Improvements in and relating to Basic Methine Dyes - Google Patents

Improvements in and relating to Basic Methine Dyes

Info

Publication number
GB1181951A
GB1181951A GB556968A GB556968A GB1181951A GB 1181951 A GB1181951 A GB 1181951A GB 556968 A GB556968 A GB 556968A GB 556968 A GB556968 A GB 556968A GB 1181951 A GB1181951 A GB 1181951A
Authority
GB
United Kingdom
Prior art keywords
alkyl
methine dyes
prepared
formula
aryl
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
GB556968A
Inventor
John Frederic Dawson
Eric Teale
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.)
Yorkshire Dyeware and Chemical Co Ltd
Original Assignee
Yorkshire Dyeware and Chemical Co 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 Yorkshire Dyeware and Chemical Co Ltd filed Critical Yorkshire Dyeware and Chemical Co Ltd
Priority to GB556968A priority Critical patent/GB1181951A/en
Publication of GB1181951A publication Critical patent/GB1181951A/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
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/10—The polymethine chain containing an even number of >CH- groups
    • C09B23/105—The polymethine chain containing an even number of >CH- groups two >CH- groups

Landscapes

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

Abstract

1,181,951. Methine dyes. YORKSHIRE DYEWARE & CHEMICAL CO. Ltd. 29 Jan., 1969 [3 Feb., 1968], No, 5569/68. Heading C4P. The invention relates to water-soluble methine dyes of the formula wherein R 1 is alkyl, R 2 is alkyl, R 3 is alkyl or benzyl, R 4 is alkyl, aryl, carbamoyl or carboxylic acid ester, R 5 is alkyl or benzyl, R 6 is alkyl or aryl, X is an anion and the ring A may be substituted for example by Cl, Br, carboalkoxy, NO 2 , alkyl or acetyl. The aryl group R 6 may contain a chloro group. The dyes are prepared (1) by alkylating a base of formula prepared by the usual condensation methods or (ii) by reacting a compound of formula with an appropriate pyrazolone substituted in the 2-position in the presence of an acid. Double salts may be prepared using ZnCl 2 .
GB556968A 1968-02-03 1968-02-03 Improvements in and relating to Basic Methine Dyes Expired GB1181951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB556968A GB1181951A (en) 1968-02-03 1968-02-03 Improvements in and relating to Basic Methine Dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB556968A GB1181951A (en) 1968-02-03 1968-02-03 Improvements in and relating to Basic Methine Dyes

Publications (1)

Publication Number Publication Date
GB1181951A true GB1181951A (en) 1970-02-18

Family

ID=9798590

Family Applications (1)

Application Number Title Priority Date Filing Date
GB556968A Expired GB1181951A (en) 1968-02-03 1968-02-03 Improvements in and relating to Basic Methine Dyes

Country Status (1)

Country Link
GB (1) GB1181951A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1239009A2 (en) * 2001-03-09 2002-09-11 Bayer Ag Process for the preparation of asymmetric methine dyestuffs
US7595139B2 (en) * 2004-08-26 2009-09-29 Konica Minolta Holdings, Inc. Metal complex dye, color toner and color filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1239009A2 (en) * 2001-03-09 2002-09-11 Bayer Ag Process for the preparation of asymmetric methine dyestuffs
EP1239009A3 (en) * 2001-03-09 2004-03-17 Bayer Chemicals AG Process for the preparation of asymmetric methine dyestuffs
US7595139B2 (en) * 2004-08-26 2009-09-29 Konica Minolta Holdings, Inc. Metal complex dye, color toner and color filter

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