EP1326924A1 - Yellow inkjet ink - Google Patents
Yellow inkjet inkInfo
- Publication number
- EP1326924A1 EP1326924A1 EP01982407A EP01982407A EP1326924A1 EP 1326924 A1 EP1326924 A1 EP 1326924A1 EP 01982407 A EP01982407 A EP 01982407A EP 01982407 A EP01982407 A EP 01982407A EP 1326924 A1 EP1326924 A1 EP 1326924A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ink
- yellow
- dye
- dyes
- inks
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/328—Inkjet printing inks characterised by colouring agents characterised by 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
- C09B25/00—Quinophthalones
Definitions
- the invention relates to yellow inks for use in the inkjet printing process.
- Inkjet printing uses inks that have to meet high authenticity requirements.
- the yellow inks based on azo dyes such as Acid Yellow 23 (tartrazine), which have been widely used so far, which give very clear shades, have an insufficient light fastness.
- Attempting to replace them with azo pigments with significantly higher light fastness encounters difficulties, particularly when extremely finely divided yellow pigments are used, which scatter light and the compatibility of inkjet printing with photographic copies based on a chromogenic material adversely affect.
- X means COOH or SO 3 H.
- the dyes of the formula I can be used in particular as alkali or ammonium salts in the ink, the ammonium nitrogen being able to be substituted 1 to 4 times, in particular by methyl, ethyl or hydroxyethyl groups.
- the dyes can be obtained from the dehydrothiotoluidinesulfonic acid by simple processes by the so-called Doebner-Miller synthesis and a subsequent condensation with a sulfated or carboxyl-substituted or carboxyl-equivalent substituted phthalic anhydride.
- a second sulfo group can also be introduced subsequently.
- the new inkjet yellow dyes can be combined with inkjet cyan dyes from the class of the phthalocyanines and with inkjet purple dyes from the series of azo dyes based on 2-amino-8-naphthol-5-sulfonic acid, without a prolonged exposure Loss of quality due to color shift is recognizable. Due to their high permeability to green, they result in clear shades without shifting the shade or loss of saturation, which have a comparatively low and even fading with long viewing times in daylight. In addition, the inks have a high inherent stability even when stored for a long time without exposure to light.
- Suitable dyes of the formula I are:
- yellow inks are produced which are intended for printing photographic originals.
- the ink 6 g of dye are dissolved with a solvent of 84 g of water, 8 g of pentanediol and 8 g of pyrrolidone.
- the inks are freed of particles by pressure filtration through a Millipore filter (0.5 ⁇ ) and filled into cartridges of a commercially available printer.
- the inks are checked for compliance with the following criteria:
- Blue filter (Bf), green filter (Gf) and red filter (Rf) following values:
- Printout with ink 2 on coated paper Lightfastness 2-3 on PE-laminated photo paper
- Printout with ink 4 on coated paper Lightfastness 3-4 on PE-coated photo paper
- Lightfastness 4 on microporous inkjet material Lightfastness 4
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10050389A DE10050389A1 (en) | 2000-10-12 | 2000-10-12 | Yellow ink-jet printing ink, e.g. useful for printing photographs, contains quinophthalone dye based on 2-(3-hydroxy-7-carboxy- or -7-sulfo-indan-1-on-2-yl)-6-(6-methyl-7-sulfo-benzothiazol-2-yl)-quinoline |
DE10050389 | 2000-10-12 | ||
PCT/EP2001/011612 WO2002031055A1 (en) | 2000-10-12 | 2001-10-09 | Yellow inkjet ink |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1326924A1 true EP1326924A1 (en) | 2003-07-16 |
Family
ID=7659430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01982407A Withdrawn EP1326924A1 (en) | 2000-10-12 | 2001-10-09 | Yellow inkjet ink |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1326924A1 (en) |
AU (1) | AU2002214001A1 (en) |
DE (1) | DE10050389A1 (en) |
WO (1) | WO2002031055A1 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3301860A (en) * | 1964-02-14 | 1967-01-31 | Du Pont | Dioxoindanyl-quinolyl-benzothiazole compounds |
DE3022837A1 (en) * | 1980-06-19 | 1982-01-07 | Bayer Ag, 5090 Leverkusen | METHOD FOR PRODUCING ANIONIC CHINOPHTHALONE DYES |
-
2000
- 2000-10-12 DE DE10050389A patent/DE10050389A1/en not_active Withdrawn
-
2001
- 2001-10-09 WO PCT/EP2001/011612 patent/WO2002031055A1/en not_active Application Discontinuation
- 2001-10-09 EP EP01982407A patent/EP1326924A1/en not_active Withdrawn
- 2001-10-09 AU AU2002214001A patent/AU2002214001A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO0231055A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2002031055A1 (en) | 2002-04-18 |
DE10050389A1 (en) | 2002-04-25 |
AU2002214001A1 (en) | 2002-04-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20030512 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BAYER CHEMICALS AG |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE ES FR GB IT |
|
17Q | First examination report despatched |
Effective date: 20040816 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LANXESS DEUTSCHLAND GMBH |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20060106 |