FR641251A - Improvements in the preparation of black and gray vat dyes - Google Patents

Improvements in the preparation of black and gray vat dyes

Info

Publication number
FR641251A
FR641251A FR641251DA FR641251A FR 641251 A FR641251 A FR 641251A FR 641251D A FR641251D A FR 641251DA FR 641251 A FR641251 A FR 641251A
Authority
FR
France
Prior art keywords
black
preparation
vat dyes
gray
gray vat
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
Other languages
French (fr)
Inventor
Arnold Shepherdson
Sydney Thornley
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
British Dyestuffs Corp 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 British Dyestuffs Corp Ltd filed Critical British Dyestuffs Corp Ltd
Application granted granted Critical
Publication of FR641251A publication Critical patent/FR641251A/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
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/02—Benzathrones
    • C09B3/06—Preparation from starting materials already containing the benzanthrone nucleus

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
FR641251D 1926-08-24 1927-08-23 Improvements in the preparation of black and gray vat dyes Expired FR641251A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB641251X 1926-08-24

Publications (1)

Publication Number Publication Date
FR641251A true FR641251A (en) 1928-07-31

Family

ID=10489464

Family Applications (1)

Application Number Title Priority Date Filing Date
FR641251D Expired FR641251A (en) 1926-08-24 1927-08-23 Improvements in the preparation of black and gray vat dyes

Country Status (1)

Country Link
FR (1) FR641251A (en)

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