EP0219615B1 - Wasserfester Papierträger für fotografische Zwecke - Google Patents

Wasserfester Papierträger für fotografische Zwecke Download PDF

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Publication number
EP0219615B1
EP0219615B1 EP86109856A EP86109856A EP0219615B1 EP 0219615 B1 EP0219615 B1 EP 0219615B1 EP 86109856 A EP86109856 A EP 86109856A EP 86109856 A EP86109856 A EP 86109856A EP 0219615 B1 EP0219615 B1 EP 0219615B1
Authority
EP
European Patent Office
Prior art keywords
coating
weight
water
acid
phosphoric acid
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
EP86109856A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0219615A1 (de
Inventor
Reiner Anthonsen
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.)
Felix Schoeller Jr Foto und Spezialpapiere GmbH
Felex Schoeller Jr and GmbH and Co KG
Original Assignee
Felix Schoeller Jr Foto und Spezialpapiere GmbH
Felex Schoeller Jr and GmbH and Co KG
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 Felix Schoeller Jr Foto und Spezialpapiere GmbH, Felex Schoeller Jr and GmbH and Co KG filed Critical Felix Schoeller Jr Foto und Spezialpapiere GmbH
Priority to AT86109856T priority Critical patent/ATE40481T1/de
Publication of EP0219615A1 publication Critical patent/EP0219615A1/de
Application granted granted Critical
Publication of EP0219615B1 publication Critical patent/EP0219615B1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/775—Photosensitive materials characterised by the base or auxiliary layers the base being of paper
    • G03C1/79—Macromolecular coatings or impregnations therefor, e.g. varnishes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/46—Non-macromolecular organic compounds
    • D21H19/48—Diolefins, e.g. butadiene; Aromatic vinyl monomers, e.g. styrene; Polymerisable unsaturated acids or derivatives thereof, e.g. acrylic acid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/3188—Next to cellulosic
    • Y10T428/31895—Paper or wood
    • Y10T428/31906—Ester, halide or nitrile of addition polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y10T428/31913—Monoolefin polymer

Definitions

  • the invention relates to a waterproof paper support for photographic purposes, which contains at least one side of a coating hardened by means of electron beams.
  • Water-resistant coated paper supports for photographic purposes are known in various embodiments. Papers provided with extruded polyolefin layers have found wide application.
  • DE-A-3 022 451, DE-A-3 022 709 and DE-A-3 410 797 which have become known in recent times, describe paper supports whose base paper is provided with at least one coating produced in situ with the aid of electron beam curing.
  • Electron beam cured coatings have improved properties, such as: B. the increase in scratch resistance, the increase in pigment absorption or smoother surfaces. Like polyolefin coatings, they are resistant to photographic process solutions and therefore also protect the paper carrier underneath from the penetration of these solutions.
  • the coatings hardened with electron beams are produced according to DE-A-3 022 451 or DE-A-3 022 709 by applying a flowable mixture to the surface of the paper, distributing it evenly there and then solidifying it with high-energy electron beams under a protective gas or other covering .
  • the mixtures contain as a crucial component at least one substance with ethylenically unsaturated double bonds, which have the ability to polymerize with each other when initiated by radiation.
  • Suitable substances with ethylenically unsaturated double bonds are all vinyl or vinylidene compounds. Those substances which contain acrylate or methacrylate groups are preferably used. Esters of maleic acid, fumaric acid, mesaconic acid, citraconic acid or itaconic acid, other derivatives of these acids, allyl compounds and linear and cyclic dienes or trienes can also be used as reactive mixture components.
  • hexanediol acrylate, trimethylolpropane triacrylate, polyester acrylates, polyurethane acrylates, polyether acrylates, polyepoxy acrylates or alkyd resin acrylates are particularly suitable.
  • the mixture should preferably contain at least one substance which contains two or more double bonds.
  • the flow properties of curable mixtures are adjusted by mixing components of higher molecular weight with low molecular weight substances.
  • non-reactive substances without double bonds can also be contained in a mixture to a limited extent.
  • mixtures for the coatings curable by means of electron beams can contain pigments, dyes, optical brighteners, image stabilizers, antioxidants or other additives, insofar as this is desirable or necessary in view of the desired properties of an overlying photographic image.
  • the photographic layers are applied to the surface of the coating hardened by electron beams either directly or after prior application of an adhesion-promoting intermediate layer.
  • These photographic layers are preferably layers which are known under the term "silver salt photography" and are used to produce black / white or color images.
  • An advantage over polyolefin coatings is e.g. B. the increased pigment absorption capacity of the coatings hardened by means of electron beams.
  • the highest possible content of white pigment e.g. B. titanium oxide, desirable.
  • the hardened layer becomes so brittle in large quantities that stress cracks soon occur or that the layer adheres poorly to the substrate.
  • the discoloration does not occur on polyolefin surfaces, nor can it be observed on classic baryta papers.
  • EP-A-0 159 493 describes a way of obtaining coatings with reduced staining by means of the special composition of the curable components of a coating mixture. That there The method described is based on the fact that unsaturated hydroxyl-functional compounds are contained in the coating mixtures in a molar concentration of 2 or more than 2.
  • EP-A-0 176 656 describes the use of a special titanium dioxide as a white pigment to reduce the coloration of the electron beam-hardened coating in photographic color developers.
  • the special titanium dioxide used has a surface coating that makes up at least 2% by weight of the total pigment.
  • the surface covering is an inorganic oxide or hydrated oxide and can be an aluminum oxide, silica, zinc oxide, magnesium oxide, tin oxide, zirconium oxide, antimony oxide or one of the alkaline earth metal oxides or mixtures of such compounds.
  • acrylated or methacrylated phosphoric acid with average molecular weights of 400 to 600 or monomeric itaconic acid are used.
  • the number of reactive, unsaturated groups determines the degree of crosslinking of the substances according to the invention with one another after curing by means of electron beams.
  • the degree of crosslinking is important for anchoring the substances according to the invention in the radiation-hardened layer during exposure to the photographic baths.
  • the effect according to the invention results in particular from the use of substances which, in addition to free acid groups, also contain reactive, unsaturated groups which can be crosslinked by radiation.
  • the acrylated or methacrylated phosphoric acids used according to the invention have a ratio of reactive, unsaturated groups to polar acid groups of 1: 2 to 2: 1, ie. H. per molecule are on average z. B. 1.5 free acid groups and 1.5 acrylate or methacrylate groups.
  • Monomeric itaconic acid has a ratio of unsaturated to polar groups of 1: 2 and is also suitable.
  • the substances according to the invention can be added in amounts of 1-15% by weight, but preferably 4-10% by weight, based on the coating mixture.
  • color pigments of any type and dispersion aids, dyes and other substances which have a favorable effect on the image quality to the coating mixtures, without adversely affecting the effect according to the invention.
  • the coatings according to the invention can be produced and solidified in any manner according to one of the known processes and have different surface structures (e.g. according to DE-C-2 515 261, DE-A-3 022 709 or EP-A-0 159 493.
  • the base paper is also waterproof coated on the opposite side.
  • This coating can also consist of a mixture according to the invention, but also of polyolefin. Several identical or different coatings can also be placed on top of each other.
  • the substances according to the invention are used in the mixtures for radiation-curable coatings, the discoloration in the color developer baths is avoided.
  • the hardened layer is scratch-resistant, and even with a high pigment content it has sufficient elasticity to prevent stress cracks and to ensure that the layer adheres sufficiently to the base paper.
  • the amount of layers applied was approximately 20 g / m 2 .
  • the coating was cured under nitrogen using electron beams using an energy dose of 4 Mrad.
  • the amount of layers applied was approximately 20 g / m 2 .
  • the coating was cured under nitrogen using electron beams using an energy dose of 4 Mrad.
  • the amount of layers applied was approximately 20 g / m 2 .
  • the coating was cured under nitrogen using electron beams using an energy dose of 4 Mrad.
  • the amount of layers applied was approximately 20 g / m 2 .
  • the coating was cured under nitrogen using electron beams using an energy dose of 4 Mrad.
  • the amount of layers applied was approximately 20 g / m 2 .
  • the coating was cured under nitrogen using electron beams using an energy dose of 4 Mrad.
  • the amount of layers applied was approximately 20 g / m 2 .
  • the coating was cured under nitrogen using electron beams using an energy dose of 4 Mrad.
  • the amount of layers applied was approximately 20 g / m 2 .
  • the coating was cured under nitrogen using electron beams using an energy dose of 4 Mrad.
  • the folding causes only a part of the pattern to come into contact with the developer solution, so that a direct comparison between the treated and the untreated area on the same pattern is possible.
  • the sample After treatment with the color developer, the sample is watered for 2 hours, mechanically dried and then stored for four days at room temperature under the influence of daylight.
  • the extent of the yellowing is determined densiometrically in accordance with DIN 4512.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)
EP86109856A 1985-10-09 1986-07-17 Wasserfester Papierträger für fotografische Zwecke Expired EP0219615B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86109856T ATE40481T1 (de) 1985-10-09 1986-07-17 Wasserfester papiertraeger fuer fotografische zwecke.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3535954A DE3535954C2 (de) 1985-10-09 1985-10-09 Wasserfester Papierträger für fotografische Aufzeichnungsmaterialien
DE3535954 1985-10-09

Publications (2)

Publication Number Publication Date
EP0219615A1 EP0219615A1 (de) 1987-04-29
EP0219615B1 true EP0219615B1 (de) 1989-01-25

Family

ID=6283103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86109856A Expired EP0219615B1 (de) 1985-10-09 1986-07-17 Wasserfester Papierträger für fotografische Zwecke

Country Status (7)

Country Link
US (1) US4731285A (ja)
EP (1) EP0219615B1 (ja)
JP (1) JPH061352B2 (ja)
AT (1) ATE40481T1 (ja)
DE (2) DE3535954C2 (ja)
ES (1) ES2001715A6 (ja)
GR (1) GR862521B (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492887B1 (en) * 1990-12-21 1997-08-27 Oji Paper Co., Ltd. Support sheet for photographic printing sheet
US5374508A (en) * 1990-12-21 1994-12-20 New Oji Paper Co., Ltd. Support sheet for photographic printing sheet
US5783043A (en) * 1996-01-11 1998-07-21 Christensen; Leif Paper coating apparatus
US6545283B1 (en) 2000-05-17 2003-04-08 Playtex Products, Inc. Process of improving the whitening of a polymeric tampon applicator
US20070218254A1 (en) * 2006-03-15 2007-09-20 Xiaoqi Zhou Photographic printing paper and method of making same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2808931A1 (de) * 1977-03-04 1978-09-07 Dynachem Corp Verfahren zum beschichten oder bedrucken eines substrates
DE3022451A1 (de) * 1980-06-14 1982-01-07 Felix Schoeller jr. GmbH & Co KG, 4500 Osnabrück Wasserfestes fotografisches papier
DE3022709A1 (de) * 1980-06-18 1982-01-07 Felix Schoeller jr. GmbH & Co KG, 4500 Osnabrück Wasserfestes fotografisches papier und verfahren zu seiner herstellung
DE3300025A1 (de) * 1983-01-03 1984-07-05 Felix Schoeller jr. GmbH & Co KG, 4500 Osnabrück Wasserfester fotografischer papiertraeger
US4554175A (en) * 1983-03-28 1985-11-19 Konishiroku Photo Industry Co., Ltd. Method of producing support for photographic paper
JPS60100144A (ja) * 1983-11-07 1985-06-04 Fuji Photo Film Co Ltd 写真印画紙用支持体

Also Published As

Publication number Publication date
DE3661974D1 (en) 1989-03-02
US4731285A (en) 1988-03-15
JPS6289043A (ja) 1987-04-23
GR862521B (en) 1986-10-10
ES2001715A6 (es) 1988-06-01
JPH061352B2 (ja) 1994-01-05
DE3535954C2 (de) 1994-05-26
DE3535954A1 (de) 1987-04-09
ATE40481T1 (de) 1989-02-15
EP0219615A1 (de) 1987-04-29

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