GB727501A - Manufacture of dry dyestuff preparations - Google Patents

Manufacture of dry dyestuff preparations

Info

Publication number
GB727501A
GB727501A GB24477/52A GB2447752A GB727501A GB 727501 A GB727501 A GB 727501A GB 24477/52 A GB24477/52 A GB 24477/52A GB 2447752 A GB2447752 A GB 2447752A GB 727501 A GB727501 A GB 727501A
Authority
GB
United Kingdom
Prior art keywords
spray
dried
urea
leuco
sodium
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
GB24477/52A
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.)
BASF Schweiz AG
Original Assignee
Ciba AG
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 Ciba AG filed Critical Ciba AG
Publication of GB727501A publication Critical patent/GB727501A/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
    • C09B9/00—Esters or ester-salts of leuco compounds of vat dyestuffs

Landscapes

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

Abstract

Aqueous solutions or suspensions of soluble salts of leuco vat dye sulphuric acid esters are spray-dried. The air may be introduced at over 100 DEG C., e.g. 150-160 DEG C. and stabilizing agents may be present. In examples, (1) an aqueous solution of the potassium salt of the tetrasulphuric acid ester of tetrahydro-3,31-dichloro - 1.2.21.11 - dianthraquinone azine are spray-dried alone or with the addition of sodium carbonate and urea, with or without aqueous ammonia; (2) the corresponding 3.31-dibromo body in aqueous solution containing sodium carbonate and urea is spray-dried; (3) the sodium salt of the sulphuric ester of leuco-indigo or its tetra-brom derivative are spray-dried as aqueous solutions in presence of molasses, urea, and sodium carbonate; (4) the potassium salt of the sulphuric ester of leuco-Bz.2.Bz.21-dimethoxy-dibenzanthrone is spray-dried as an aqueous solution with molasses, urea and sodium hydroxide; (5) the sodium salts of the leuco-sulphuric esters of the following are spray-dried as aqueous suspensions or solutions containing sodium hydroxide or carbonate and in some cases urea and the sodium salt of di-n-butyl-naphthalene sulphonic acid: (a) 4.41-dimethyl-6.61 - dichlorothioindigo, (b) di - isopropyl dipyrazolanthronyl, (c) dibenzpyrenequinone, (d) 6.61 - diethoxythioindigo, (e) 1.41.11.111 - trianthrimide carbazole, (f) the alkaline condensation product from 1-(Bz.1-benzanthronyl) aminoanthraquinone. Specification 500,120 is referred to.
GB24477/52A 1951-10-04 1952-09-30 Manufacture of dry dyestuff preparations Expired GB727501A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH727501X 1951-10-04

Publications (1)

Publication Number Publication Date
GB727501A true GB727501A (en) 1955-04-06

Family

ID=4532056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24477/52A Expired GB727501A (en) 1951-10-04 1952-09-30 Manufacture of dry dyestuff preparations

Country Status (1)

Country Link
GB (1) GB727501A (en)

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