IT1254369B - PROCEDURE FOR THE PRODUCTION OF LEUCO DYES WITH SULFUR AND PRODUCT OBTAINED. - Google Patents

PROCEDURE FOR THE PRODUCTION OF LEUCO DYES WITH SULFUR AND PRODUCT OBTAINED.

Info

Publication number
IT1254369B
IT1254369B ITRM920384A ITRM920384A IT1254369B IT 1254369 B IT1254369 B IT 1254369B IT RM920384 A ITRM920384 A IT RM920384A IT RM920384 A ITRM920384 A IT RM920384A IT 1254369 B IT1254369 B IT 1254369B
Authority
IT
Italy
Prior art keywords
sulfur
procedure
production
product obtained
dyes
Prior art date
Application number
ITRM920384A
Other languages
Italian (it)
Inventor
Manuel Jose Domingo
Original Assignee
Sandoz 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
Priority claimed from GB919111194A external-priority patent/GB9111194D0/en
Priority claimed from GB919111211A external-priority patent/GB9111211D0/en
Priority claimed from GB919124959A external-priority patent/GB9124959D0/en
Priority claimed from GB919124998A external-priority patent/GB9124998D0/en
Application filed by Sandoz Ag filed Critical Sandoz Ag
Publication of ITRM920384A0 publication Critical patent/ITRM920384A0/en
Publication of ITRM920384A1 publication Critical patent/ITRM920384A1/en
Application granted granted Critical
Publication of IT1254369B publication Critical patent/IT1254369B/en

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
    • C09B67/00—Influencing 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
    • C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
    • C09B67/0077—Preparations with possibly reduced vat, sulfur or indigo dyes
    • 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
    • C09B49/00—Sulfur dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coloring (AREA)
  • Removal Of Specific Substances (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

Mediante riduzione di un colorante allo zolfo (S) in mezzo acquoso con un composto carbonilico riducente, in presenza di idrossido di metallo alcalino e facoltativamente (bi)solfito di metallo alcalino, a temperature superiori a 60°C, nonché mediante essiccamento del miscuglio di reazione, si ottengono leuco coloranti allo zolfo (L) molto stabili i quali sono praticamente esenti da solfuri e da polisolfuri, sono prontamente e completamente solubili in acqua e sono utilizzabili per colorare o tingere substrati colorabili con coloranti allo zolfo, per cui si può efficientemente evitare il disturbo dello sviluppo di H2S oppure il disturbo del riscontro di solfuri inorganici.By reducing a sulfur dye (S) in an aqueous medium with a reducing carbonyl compound, in the presence of alkali metal hydroxide and optionally (bi) alkali metal sulfite, at temperatures above 60 ° C, as well as by drying the mixture of reaction, very stable sulfur (L) dyes are obtained which are practically free of sulphides and polysulphides, are readily and completely soluble in water and can be used to color or dye substrates that can be colored with sulfur dyes, so it can be efficiently avoid disturbance of H2S development or disturbance of the detection of inorganic sulphides.

ITRM920384A 1991-05-23 1992-05-22 PROCEDURE FOR THE PRODUCTION OF LEUCO DYES WITH SULFUR AND PRODUCT OBTAINED. IT1254369B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB919111194A GB9111194D0 (en) 1991-05-23 1991-05-23 Improvements in or relating to organic compounds
GB919111211A GB9111211D0 (en) 1991-05-23 1991-05-23 Improvements in or relating to organic compounds
GB919124959A GB9124959D0 (en) 1991-11-25 1991-11-25 Improvements in or relating to organic compounds
GB919124998A GB9124998D0 (en) 1991-11-25 1991-11-25 Improvements in or relating to organic compounds

Publications (3)

Publication Number Publication Date
ITRM920384A0 ITRM920384A0 (en) 1992-05-22
ITRM920384A1 ITRM920384A1 (en) 1993-11-22
IT1254369B true IT1254369B (en) 1995-09-14

Family

ID=27450684

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM920384A IT1254369B (en) 1991-05-23 1992-05-22 PROCEDURE FOR THE PRODUCTION OF LEUCO DYES WITH SULFUR AND PRODUCT OBTAINED.

Country Status (10)

Country Link
JP (1) JPH05140469A (en)
AT (1) AT403925B (en)
BR (1) BR9202015A (en)
CH (1) CH683775A5 (en)
DE (1) DE4215678A1 (en)
ES (1) ES2047448B1 (en)
FR (1) FR2676742B1 (en)
GB (1) GB2255981B (en)
IT (1) IT1254369B (en)
TR (1) TR26911A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9224368D0 (en) * 1992-11-20 1993-01-13 Sandoz Ltd Improvements in or relating to organic compounds
US5302441A (en) * 1991-11-15 1994-04-12 The Mead Corporation Postformable decorative laminating paper
US5632782A (en) * 1994-09-01 1997-05-27 Clariant Finance (Bvi) Ltd. Exhaust dyeing process for sulphur dyes
GB9504888D0 (en) * 1995-03-10 1995-04-26 Sandoz Ltd Improvements in or relating to oraganic compounds
GB9504870D0 (en) * 1995-03-10 1995-04-26 Sandoz Ltd Improvements in or relating to organic compounds
TR199600348A2 (en) * 1995-05-03 1996-11-21 Clariant Int Ltd Sulfur dyes, their manufacture and use.
US20070012412A1 (en) * 2005-07-15 2007-01-18 Schweitzer-Mauduit International, Inc. Laminate paper having increased pH stability and method of making same
JP5308259B2 (en) * 2009-07-14 2013-10-09 大王製紙株式会社 Paperboard and manufacturing method thereof

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE459281A (en) *
DE198691C (en) *
DE200391C (en) *
DE251101C (en) *
FR301419A (en) *
FR698491A (en) * 1929-04-15 1931-01-31 Ici Ltd Improvements in the production and manufacture of stable preparations of indigo-leucoic acid
FR908875A (en) * 1943-12-24 1946-04-22 Ste Ind Chim Bale Process for dyeing artificial fibers with sulfur dyes
CA1081936A (en) * 1975-11-19 1980-07-22 Richard L. Doerr Oxidation of vat and sulfur dyes with vanadate activated bromate or iodate in combination with a nitrate
DE3532341A1 (en) * 1985-09-11 1987-03-19 Hoechst Ag METHOD AND MEANS FOR ONE-BATH REOXIDATION AND SOAPING OF COLORINGS WITH COAT OR SULFUR COAT DYES
ES2005094A6 (en) * 1987-02-16 1989-03-01 Cardoner Sa Low sulphide content liq. compsn. of reduced sulphur dye - for dyeing and printing cotton etc., with high stability, good penetration and moderate substantivity
FR2610942B1 (en) * 1987-02-16 1991-12-13 Sandoz Sa LIQUID SULFUR DYE COMPOSITIONS AND THEIR PREPARATION
US4917706B2 (en) * 1988-02-01 1996-02-20 Sandoz Ltd Liquid compositions of prereduced sulfur dyes and production thereof

Also Published As

Publication number Publication date
ES2047448A1 (en) 1994-02-16
ITRM920384A0 (en) 1992-05-22
JPH05140469A (en) 1993-06-08
ES2047448B1 (en) 1994-11-01
ITRM920384A1 (en) 1993-11-22
CH683775A5 (en) 1994-05-13
ATA105992A (en) 1997-11-15
TR26911A (en) 1994-08-22
BR9202015A (en) 1993-11-30
FR2676742B1 (en) 2000-09-15
GB2255981A (en) 1992-11-25
DE4215678A1 (en) 1992-11-26
FR2676742A1 (en) 1992-11-27
GB2255981B (en) 1995-02-01
GB9210931D0 (en) 1992-07-08
AT403925B (en) 1998-06-25

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