EP0672540A1 - Matériau d'enregistrement sensible à la préssion contenant des huiles naturelles ou leur dérivés - Google Patents

Matériau d'enregistrement sensible à la préssion contenant des huiles naturelles ou leur dérivés Download PDF

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Publication number
EP0672540A1
EP0672540A1 EP95103166A EP95103166A EP0672540A1 EP 0672540 A1 EP0672540 A1 EP 0672540A1 EP 95103166 A EP95103166 A EP 95103166A EP 95103166 A EP95103166 A EP 95103166A EP 0672540 A1 EP0672540 A1 EP 0672540A1
Authority
EP
European Patent Office
Prior art keywords
methyl
hydrogen
methoxy
chlorine
ethyl
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.)
Granted
Application number
EP95103166A
Other languages
German (de)
English (en)
Other versions
EP0672540B1 (fr
Inventor
Horst Dr. Berneth
Günther Dr. Klug
Jürgen Dr. Weisser
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.)
Bayer AG
Original Assignee
Bayer AG
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Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of EP0672540A1 publication Critical patent/EP0672540A1/fr
Application granted granted Critical
Publication of EP0672540B1 publication Critical patent/EP0672540B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/132Chemical colour-forming components; Additives or binders therefor
    • B41M5/136Organic colour formers, e.g. leuco dyes
    • B41M5/145Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/132Chemical colour-forming components; Additives or binders therefor
    • B41M5/136Organic colour formers, e.g. leuco dyes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/165Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components characterised by the use of microcapsules; Special solvents for incorporating the ingredients
    • B41M5/1655Solvents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/132Chemical colour-forming components; Additives or binders therefor
    • B41M5/136Organic colour formers, e.g. leuco dyes
    • B41M5/145Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
    • B41M5/1455Organic colour formers, e.g. leuco dyes with a lactone or lactam ring characterised by fluoran compounds

Definitions

  • the present invention relates to a pressure-sensitive recording material which contains color donors in microencapsulated form, the solvent for the color donors containing natural oils and / or derivatives thereof.
  • Pressure-sensitive recording material consists, for example, of at least one pair of (paper) sheets which contain a color former or a color former mixture, dissolved or dispersed in a non-volatile organic solvent, and a developer.
  • paper paper sheets which contain a color former or a color former mixture, dissolved or dispersed in a non-volatile organic solvent, and a developer.
  • a color former or a color former mixture dissolved or dispersed in a non-volatile organic solvent, and a developer.
  • such a pressure-sensitive recording material can consist of two sheets of paper, the upper sheet being, for example, CB (Coated Back) paper which is coated on its underside with microcapsules which contain the color former and an organic solvent.
  • the lower sheet is then designed as CF paper (coated front), the top of which is coated with the developer.
  • SC paper Self Contained
  • microcapsules which contain colorants and solvents and developers are applied together on the top of a sheet and covered with an uncoated sheet of paper.
  • Suitable capsule material is e.g. Gelatin / gum arabic, polyamides, polyurethanes, polyureas, polysulfonamides, polyesters, polycarbonates, polysulfonates, polyacrylates and phenol, melamine and urea-formaldehyde condensates as described, for example, in M. Gutcho, Capsule Technology and Microencapsulation, Noyes Data Co. 1972; G. Baster, Microencapsulation, Processes and Applications, editor J.E. Vandegaar, and in DE-A 2 237 545 and 2 119 933 are described. Microcapsules whose shells consist of polyadducts of polyisocyanates and polyamines are particularly advantageous. Polyisocyanates, polyamines, solvents and suitable production processes for the last-mentioned microcapsules are described, for example, in DE-A 3 203 059.
  • Suitable developers are clays, acid-modified clays, oxides and acid salts, and monomeric, resinous and polymeric phenols, carboxylic acids or metal salts of carboxylic acids.
  • 3,1-benzoxazines are used as color formers e.g. known from DE-A 3 500 361, DE-A 3 622 262 and EP-A 316 277.
  • Mixtures of 3,1-benzoxazines with color formers from the series of the fluoranes and diindolyllactones are e.g. known from DE-A 3 841 668 and DE-A 4 010 641.
  • Aromatic hydrocarbons, alkylated aromatic hydrocarbons, esters and aliphatic chlorinated hydrocarbons are usually used as solvents for the color formers in microcapsules, e.g. partially hydrogenated terphenyl, alkylated naphthalenes and biphenyls, dibutyl phthalate and partially chlorinated paraffins. These solvents can be mixed with one another and, if appropriate, also with other solvents.
  • Color formers with good application properties are 3,1-benzoxazines, fluoranes and diindolyllactones. However, these are connections with distinctly polar structural elements. It was therefore to be expected that, in contrast to the almost non-polar triphenylmethane carbinol bases and ethers, these color formers would only dissolve inadequately in natural oils.
  • the recording materials according to the invention surprisingly give an image which has a significantly more neutral shade after exposure of the CF or CB side.
  • the image shows a higher intensity after exposure of the CB side than when using conventional solvents.
  • recording materials according to the invention are surprisingly more stable to aging processes, in particular in wet-heat aging. After storage for several days under 70 ° C / 75% relative humidity, they produce more intensive images than when using conventional solvents.
  • microcapsules in recording materials according to the invention are denser and can be produced with less emulsifying energy than conventional microcapsules.
  • Natural oils are those of vegetable and animal origin such as coconut oil (oil), palm oil, sunflower oil, rapeseed oil, olive oil, sesame oil, soybean oil, linseed oil, castor oil, cottonseed oil, peanut oil or fish oil.
  • esters of fatty acids on which such oils are based such as rapeseed oil fatty acid methyl ester, methyl oleate, 2-ethylhexyl cocoate, isopropyl myristate, propylene glycol dicaprylate / caprate or methyl isostearate.
  • These oils and / or esters can be used individually, in mixtures with one another and / or in mixtures with paraffinic and / or aromatic hydrocarbons. Mixtures with hydrocarbons preferably contain at least 50% by weight of natural oils or esters of the fatty acids on which such oils are based.
  • Preferred natural oils are coconut fat (oil), palm oil, rapeseed oil, sesame oil and soybean oil.
  • Preferred hydrocarbons are paraffinic, in particular branched, paraffinic hydrocarbons, for example so-called white oil.
  • Coconut fat (oil) and coconut fat / white oil mixtures are particularly preferred.
  • the proportion of white oil in such mixtures can e.g. be between 1 and 50% by weight, preferably between 10 and 40% by weight.
  • Such mixtures preferably contain at least 50% by weight, preferably at least 65% by weight, of 3,1-benzoxazines of the formula (I) and a maximum of 2 compounds from the group of the fluoranes of the formulas (V) and (VI) and the diindolyllactones of formula (VII).
  • recording materials according to the invention which, as colorants, contain mixtures of black-developing benzoxazines and black-developing fluoranes or mixtures of black-developing benzoxazines, green-developing fluoranes and red-developing benzoxazines or diindolyllactones or mixtures of green-developing benzoxazines, black-developing Contain fluorans and red-developing benzoxazines or diindolyl lactones.
  • Such mixtures are characterized by a more intensive imaging ability compared to the individual components.
  • a paper can be coated with microcapsules which contain color formers or color form mixtures to be used according to the invention in solvents or solvent mixtures to be used according to the invention, so produce a CB paper and this with commercially available CF paper that is coated with a developer. It is also possible to apply such microcapsules together with one of the developers mentioned above to the top of a paper in a customary manner and thus to contain an SC paper which can be used in a conventional way in a carbon copy set. The copy is created with imagewise, mechanical pressure on the surface by developing the color former solution emerging from the destroyed capsules on the surface of the CF or SC paper.
  • the quality of such copies can be determined, for example, by measuring the reflectance. For example, a large-area impression can be made by destroying the capsules of a CB paper on the front side of a CF paper containing the color developer.
  • the impression CF fading
  • CB Decline the CB side coated with microcapsules
  • the intensity of the exposed impression (CF fading) can be determined as indicated above and the color tone can be compared with the original by visual inspection.
  • CB Decline When exposing the capsule-coated side of a CB paper, a copy can then be made by applying pressure. Their intensity (CB Decline) can be determined as indicated above and, together with the color, compared with the copy of an unexposed CB paper in an analog manner.
  • this can e.g. stored at 70 ° C and 75% relative humidity for 12 days.
  • a print can then be made by applying pressure, the intensity (aging) of which is determined as above and compared with the color tone to the copy of a CB paper stored at room temperature in a dry place.
  • Copies resulting from the color formers or color picture mixtures to be used according to the invention in the solvents to be used according to the invention show a more neutral shade after aging and with CF fading and CB declining, ie a smaller color shift, and after aging and with the CB-Decline a higher color intensity than when using conventional solvents and / or other color formers.
  • the emulsification in the production of microcapsules to be used according to the invention requires considerably less energy than the emulsification in the production of conventional color formers and solvent-containing microcapsules.
  • a commercially available laboratory emulsifier of the type MT 48/260 manufactured by the manufacturer of the production of the production of the invention. It was observed that to produce a droplet size of 7 ⁇ m instead of the otherwise usual 9000 revolutions per minute, only about 6000 revolutions per minute in the production according to the invention using microcapsules were required.
  • microcapsules to be used according to the invention also have a higher tightness.
  • a microcapsule dispersion obtained according to Example A was added 2.1 g of a conventional cellulose-based spacer, e.g. Albocell® BE 600/30, 2.0 g of a conventional binder, e.g. a styrene-butadiene latex, and 16.3 g of water were stirred in.
  • This mixture was applied to a base paper (40 g / m2) using a 40 ⁇ m doctor blade and dried. This gave a CB paper with a coating weight of approximately 5.5 g / m 2.
  • the intensity was determined from the remission of the fourth copy of a set, in which sheets 1 to 3 were made from a base paper (46 g / m 2), sheet 4 from the one prepared according to Example B.
  • CB paper and sheet 5 consisted of a commercially available CF paper, calculated according to the formula given above.
  • Example C A copy made according to Example C or a CB paper made according to Example B was irradiated for 48 hours in a box with four 18 W fluorescent tubes (Sylvania-Luxline® ES, daylight de luxe).
  • a CB paper produced according to Example B was stored in a commercially available climatic cabinet at a temperature of 70 ° C. and a relative atmospheric humidity of 75%. After a storage time of 12 days, a sample of the aged paper was written through onto a commercially available, fresh CF paper and measured as described in Example C.
  • 5.7 parts by weight of a microcapsule dispersion prepared in accordance with Example A were mixed with 8.5 parts by weight of water and 13.3 parts by weight of silica sol (silica sol F 300 from Bayer AG or Ludox® HS 40 from Dupont). Approx. 5 ml of the homogeneous mixture were applied to a standard base paper (approx. 40 g / m2) by means of a wire knife, as described in Example B, and then dried using warm air. The discoloration of the paper was measured optically, as described above. The following applies to the evaluation: The lower the measured absorption value, the higher the tightness of the microcapsule wall.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Color Printing (AREA)
EP95103166A 1994-03-18 1995-03-06 Matériau d'enregistrement sensible à la préssion contenant des huiles naturelles ou leur dérivés Expired - Lifetime EP0672540B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4409265A DE4409265A1 (de) 1994-03-18 1994-03-18 Druckempfindliches Aufzeichnungsmaterial, das natürliche Öle und/oder Derivate davon enthält
DE4409265 1994-03-18

Publications (2)

Publication Number Publication Date
EP0672540A1 true EP0672540A1 (fr) 1995-09-20
EP0672540B1 EP0672540B1 (fr) 1997-08-06

Family

ID=6513156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103166A Expired - Lifetime EP0672540B1 (fr) 1994-03-18 1995-03-06 Matériau d'enregistrement sensible à la préssion contenant des huiles naturelles ou leur dérivés

Country Status (6)

Country Link
US (1) US5552365A (fr)
EP (1) EP0672540B1 (fr)
JP (1) JPH07276797A (fr)
CA (1) CA2144683A1 (fr)
DE (2) DE4409265A1 (fr)
ES (1) ES2105793T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697292A1 (fr) * 1994-07-20 1996-02-21 The Wiggings Teape Group Limited Matériau d'enregistrement sensible à la pression
WO1997045273A1 (fr) * 1996-05-30 1997-12-04 Minnesota Mining And Manufacturing Company Composes chromogenes a base de sultine et leur utilisation dans des papiers autocopiants sans carbone
WO2000016985A1 (fr) * 1998-09-23 2000-03-30 The Mead Corporation Microcapsules contenant du solvant pour de la matiere chromogene
EP2065459A3 (fr) * 2007-11-05 2010-08-25 Sunbelt Corporation Formulations liquides de colorants dans des systèmes de solvants non dérivés du pétrole

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5925595A (en) * 1997-09-05 1999-07-20 Monsanto Company Microcapsules with readily adjustable release rates
DE10336044A1 (de) * 2003-08-01 2005-02-17 Beiersdorf Ag Tensidfreie Rasierhilfszubereitung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0316277A2 (fr) * 1987-11-12 1989-05-17 Ciba-Geigy Ag 2,4-Benzoxazines substituées en position 1 par un hétérocycle, chromogènes
DE4010641A1 (de) * 1990-04-03 1991-10-10 Bayer Ag Farbbildner-mischung fuer druck- und waermeempfindliche aufzeichnungssysteme
EP0573210A2 (fr) * 1992-06-04 1993-12-08 The Wiggins Teape Group Limited Matériau d'enregistrement sensible à la pression

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5960380A (en) * 1979-08-30 1981-03-05 A. Ehrenreich G.m.b.H. & Co. KG Bellows seal and retaining ring
DE3622262A1 (de) * 1986-07-02 1988-01-07 Bayer Ag Chromogene 3,1-benzoxazine
DE3633116A1 (de) * 1986-09-30 1988-04-07 Feldmuehle Ag Druckempfindliches aufzeichnungsmaterial
DE3841668A1 (de) * 1988-12-10 1990-06-13 Bayer Ag Mischung aus 3.1-benzoxazinen und fluoranen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0316277A2 (fr) * 1987-11-12 1989-05-17 Ciba-Geigy Ag 2,4-Benzoxazines substituées en position 1 par un hétérocycle, chromogènes
DE4010641A1 (de) * 1990-04-03 1991-10-10 Bayer Ag Farbbildner-mischung fuer druck- und waermeempfindliche aufzeichnungssysteme
EP0573210A2 (fr) * 1992-06-04 1993-12-08 The Wiggins Teape Group Limited Matériau d'enregistrement sensible à la pression

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697292A1 (fr) * 1994-07-20 1996-02-21 The Wiggings Teape Group Limited Matériau d'enregistrement sensible à la pression
WO1997045273A1 (fr) * 1996-05-30 1997-12-04 Minnesota Mining And Manufacturing Company Composes chromogenes a base de sultine et leur utilisation dans des papiers autocopiants sans carbone
WO2000016985A1 (fr) * 1998-09-23 2000-03-30 The Mead Corporation Microcapsules contenant du solvant pour de la matiere chromogene
EP2065459A3 (fr) * 2007-11-05 2010-08-25 Sunbelt Corporation Formulations liquides de colorants dans des systèmes de solvants non dérivés du pétrole
US7842102B2 (en) 2007-11-05 2010-11-30 Sunbelt Corporation Liquid dye formulations in non-petroleum based solvent systems
US8529639B2 (en) 2007-11-05 2013-09-10 Sunbelt Corporation Liquid dye formulations in non-petroleum based solvent systems

Also Published As

Publication number Publication date
EP0672540B1 (fr) 1997-08-06
DE59500455D1 (de) 1997-09-11
JPH07276797A (ja) 1995-10-24
CA2144683A1 (fr) 1995-09-19
US5552365A (en) 1996-09-03
DE4409265A1 (de) 1995-09-21
ES2105793T3 (es) 1997-10-16

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