EP0274017B1 - Matériau support photographique antistatique - Google Patents

Matériau support photographique antistatique Download PDF

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Publication number
EP0274017B1
EP0274017B1 EP87116068A EP87116068A EP0274017B1 EP 0274017 B1 EP0274017 B1 EP 0274017B1 EP 87116068 A EP87116068 A EP 87116068A EP 87116068 A EP87116068 A EP 87116068A EP 0274017 B1 EP0274017 B1 EP 0274017B1
Authority
EP
European Patent Office
Prior art keywords
support material
material according
photographic
acid
mol
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 - Lifetime
Application number
EP87116068A
Other languages
German (de)
English (en)
Other versions
EP0274017A2 (fr
EP0274017A3 (en
Inventor
Eckehard Säverin
Hans-Udo Tyrakowski
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.)
Felex Schoeller Jr and GmbH and Co KG
Original Assignee
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 Felex Schoeller Jr and GmbH and Co KG filed Critical Felex Schoeller Jr and GmbH and Co KG
Priority to AT87116068T priority Critical patent/ATE78938T1/de
Publication of EP0274017A2 publication Critical patent/EP0274017A2/fr
Publication of EP0274017A3 publication Critical patent/EP0274017A3/de
Application granted granted Critical
Publication of EP0274017B1 publication Critical patent/EP0274017B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G03C1/85—Photosensitive materials characterised by the base or auxiliary layers characterised by antistatic additives or coatings

Definitions

  • Backing materials for photographic layers are usually provided with an antistatic layer on the back in order to prevent them from becoming damaged during processing of the material, e.g. build up static charges on the surface during watering with photosensitive emulsions or after passing through the bath.
  • the discharges would lead to exposure of the photographic layer, so that undesired markings in the image become visible.
  • the static charge also causes the images to adhere to one another during sorting, so that further processing is disrupted.
  • hydrophobic components have the disadvantage of high dirt absorption and low antistatic activity, while hydrophilic components result in low adhesive tape adhesion, poor printability and inadequate bath strength.
  • EP-A-0 160 912 discloses a photographic material with a silver halide emulsion layer on one side of a polyolefin-coated paper support and an antistatic layer on the other side of the support, in which the antistatic layer contains a sodium magnesium silicate, a sodium polystyrene sulfonate and certain succinic acid half-esters .
  • the conductivity in this combination is such that the desired antistatic properties are sufficient.
  • the material also has a relative low dirt absorption.
  • the object of the present invention is to provide a photographic material of the type mentioned at the beginning, the antistatic coated back of which at the same time has good properties with regard to all of the above five requirements.
  • the antistatic layer contains a colloidal aluminum-modified silica, an alkali salt of an organic polyacid, for example sodium polystyrene sulfonate as a conductivity agent, an aqueous one Dispersion of copolymers of acrylic acid alkyl esters with a content of free carboxyl groups of 1-10 mol% and free hydroxyl groups of 0-20 mol% as a binder, and a trifunctional aziridine as a crosslinking agent.
  • an alkali salt of an organic polyacid for example sodium polystyrene sulfonate
  • an aqueous one Dispersion of copolymers of acrylic acid alkyl esters with a content of free carboxyl groups of 1-10 mol% and free hydroxyl groups of 0-20 mol% as a binder and a trifunctional aziridine as a crosslinking agent.
  • crosslinking agents for plastic dispersions containing free carboxyl groups.
  • this backside coating according to the invention shows both sufficient conductivity and thus good antistatic properties, low dirt absorption with regard to the mostly dark-colored oxidation products of developer solutions, good abrasion and water resistance when passing through acidic and alkaline development baths, good printability with commercially available printing inks and good writing properties as well as good adhesive tape adhesion even with chemical and mechanical stress.
  • the sum of the polar groups does not exceed 25 mol% of the copolymer of acrylic acid esters.
  • a terpolymer of styrene, C1-C4-alkyl acrylate and 10% methacrylic acid is provided as a binder.
  • the effectiveness of the combination of the specific binder according to the invention and the crosslinking agent is increased by sodium magnesium silicate of the montmorillonite type additionally contained in the antistatic layer.
  • the proportions of the components are based on the dry layer as follows: colloidal silica: 23-70% by weight Alkaline salt of polyacid: 3 - 30% by weight Polymer binder: 30-70% by weight Montmorillonite: 0 - 30% by weight Aziridine: 2 - 18% by weight
  • the layer application (dry) is 0.2 - 1.0 g / m2, in particular 0.2 - 0.5 g / m2.
  • the support material for photographic layers according to the invention is produced in particular by slowly mixing the individual components in the sequence water-alcohol mixture, montmorillonite, colloidals, aluminum-modified silica, copolymer dispersion, alkali salt of organic polyacid, aziridine, the desired pH - Sets the value with ammonia solution, applies the casting solution thus obtained in the desired layer thickness and then dries.
  • the antistatic properties are tested by measuring the surface resistance with an electrode according to DIN 53482.
  • samples are printed with standard color ribbons.
  • the samples were printed in a 30 sec commercial developer dipped and rinsed briefly with water. Then you apply finger friction to the printed back. It is checked whether the print is blurred or whether discoloration occurs due to the washing out of a color component of the printing ink.
  • a print smeared after developer bath and friction is either due to poor adhesion of the print on the back of the photographic material or to low abrasion resistance of the back coating. The latter, i.e. damage due to abrasion of the back surface, can be seen when viewed against the light.
  • the sample is provided with a commercially available adhesive tape (eg 3 M adhesive tape 8422) and this is fixed with a defined weight (8 kg roll). Then the pattern is cut into 1.5 cm wide strips and the adhesive tape is partially peeled off.
  • the sample prepared in this way is clamped in a breaking load tester in which the adhesive tape is removed from the base at an angle of 180 ° at a speed of 20 cm / min. The force required to pull off is measured. Since the adhesive tape adhesion must be sufficient even under mechanical stress in developing solutions, a drop of water is placed on the boundary between the photographic material and the adhesive tape before the adhesive tape is peeled off.
  • Table 1 below contains examples of compositions of mixtures for antistatic layers according to the invention. The associated test values are contained in Table 2.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Paper (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Paints Or Removers (AREA)

Claims (10)

  1. Matériau de support pour couches photographiques avec couche de revêtement antistatique sur la face postérieure, caractérisé en ce que le revêtement de la face postérieure contient au moins les constituants suivants :
    a) un acide silicique colloïdal modifié par l'aluminium,
    b) un sel alcalin d'un polyalcool organique,
    c) une dispersion aqueuse d'au moins un copolymère d'acrylate d'alkyle, d'acide méthacrylique et d'au moins un autre constituant polymérisé ayant une teneur en groupes carboxyle libres allant de 1 à 10 moles-% et en groupes hydroxyle libres allant de 0 à 20 moles-%
    d) une aziridine trifonctionnelle servant d'agent de réticulation.
  2. Matériau de support photographique selon la revendication 1, caractérisé en ce que les autres constituants sont le méthacrylate de méthyle et l'acrylate d'hydroxyéthyle.
  3. Matériau de support photographique selon la revendication 1, caractérisé en ce que l'autre constituant est le styrène tandis que la teneur en acide méthacrylique est égale dans ce cas à 10 moles-%.
  4. Matériau de support photographique selon la revendication 1, caractérisé en ce que la somme des groupes polaires dans c) ne dépasse pas 25 moles-%.
  5. Matériau de support photographique selon la revendication 1 ou 2, caractérisé en ce que le copolymère est un terpolymère de styrène, d'acrylate d'alkyle en C₁-C₄ et de 10% d'acide méthacrylique.
  6. Matériau de support photographique selon l'une des revendications 1 à 5, caractérisé en ce que la couche antistatique contient en outre un silicate de sodium-magnésium du type de la montmorillonite.
  7. Matériau de support photographique selon la revendication 1 caractérisé en ce que le sel alcalin d'un polyacide organique est un sel alcalin de l'acide polystyrènesulfonique ou de l'acide nahtalinepolysulfonique ou un sulfate de cellulose alcalin.
  8. Matériau de support photographique selon la revendication 1 caractérisé en ce que le matériau de support est un papier enduit de polyoléfine.
  9. Matériau de support photographique selon l'une des revendications 1 à 8, caractérisé par les rapports pondéraux suivants des constituants, rapportés chaque fois à la couche sèche : acide silicique colloïdal 23 - 70% en poids sel alcalin du polyacide 3 - 30% en poids liant polymère 30 - 70% en poids montmorillonite 0 - 30% en poids aziridine 2 - 18% en poids
  10. Procédé de préparation d'un matériau de support pour couches photographiques selon l'une des revendications 1 à 9, caractérisé en ce qu'on mélange lentement et avec agitation les différents constituants dans le mélange des solutions préparées formées d'eau et d'alcool isopropylique dans l'ordre suivant : montmorillonite, acide silicique colloïdal modifié par l'aluminium, dispersion de copolymères, sel alcalin du polyacide organique, aziridine, qu'on règle le pH à la valeur souhaitée avec une solution ammoniacale, que l'on applique la solution ainsi obtenue pour obtenir l'épaisseur de couche souhaitée et que l'on sèche ensuite.
EP87116068A 1987-01-06 1987-10-31 Matériau support photographique antistatique Expired - Lifetime EP0274017B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87116068T ATE78938T1 (de) 1987-01-06 1987-10-31 Antistatisches fotografisches traegermaterial.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873700183 DE3700183A1 (de) 1987-01-06 1987-01-06 Antistatisches fotographisches traegermaterial
DE3700183 1987-01-06

Publications (3)

Publication Number Publication Date
EP0274017A2 EP0274017A2 (fr) 1988-07-13
EP0274017A3 EP0274017A3 (en) 1990-02-28
EP0274017B1 true EP0274017B1 (fr) 1992-07-29

Family

ID=6318470

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116068A Expired - Lifetime EP0274017B1 (fr) 1987-01-06 1987-10-31 Matériau support photographique antistatique

Country Status (7)

Country Link
US (1) US5104779A (fr)
EP (1) EP0274017B1 (fr)
JP (1) JPS63173044A (fr)
AT (1) ATE78938T1 (fr)
DE (2) DE3700183A1 (fr)
ES (1) ES2033285T3 (fr)
GR (2) GR920300032T1 (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3735871A1 (de) * 1987-10-23 1989-05-03 Schoeller F Jun Gmbh Co Kg Fotografisches traegermaterial fuer lichtempfindliche schichten in form eines kunststoffbeschichteten papiers oder einer kunststoffolie mit einer rueckseitenbeschichtung
DE69016366T2 (de) * 1989-11-29 1995-05-24 Konishiroku Photo Ind Verfahren zur Herstellung einer antistatischen Schicht.
US5075164A (en) * 1989-12-05 1991-12-24 Eastman Kodak Company Print retaining coatings
CA2034788A1 (fr) * 1990-01-26 1991-07-27 Rudolf W. Beisswenger Element a adhesivite amelioree de couches auxiliaires sur substrats de pellicule a couches antistatiques
DE69018628T2 (de) * 1990-07-20 1995-10-05 Agfa Gevaert Nv Verfahren zur Herstellung von lösungsmittelfesten Polymerperlen.
US5221555A (en) * 1991-12-12 1993-06-22 Felix Schoeller, Jr. Gmbh & Co. Kg Reverse side coating of photographic support materials
DE4101475A1 (de) * 1991-01-19 1992-07-23 Schoeller F Jun Gmbh Co Kg Beschichtungsmasse fuer die rueckseite fotografischer traegermaterialien und verfahren zu ihrer herstellung
US5077185A (en) * 1991-03-28 1991-12-31 E. I. Du Pont De Nemours And Company Antistatic antihalation backing layer with improved properties
JP2739393B2 (ja) * 1991-07-09 1998-04-15 富士写真フイルム株式会社 ハロゲン化銀写真感光材料
DE4308274C2 (de) * 1993-03-16 1996-07-18 Schoeller Felix Jun Papier Schichtträger für fotografische Aufzeichnungsmaterialien
US5589324A (en) * 1993-07-13 1996-12-31 International Paper Company Antistatic layer for photographic elements comprising polymerized polyfunctional aziridine monomers
DE4428941C2 (de) * 1994-08-16 1998-04-16 Schoeller Felix Jun Foto Schichtträger für fotografische Aufzeichnungsmaterialien
US5491013A (en) * 1994-08-31 1996-02-13 Rexam Industries Corp. Static-dissipating adhesive tape
EP0828790A1 (fr) * 1995-05-26 1998-03-18 Siew Puat Yeo Composition polymere a deux elements
US5723276A (en) * 1996-09-11 1998-03-03 Eastman Kodak Company Coating compositions for photographic paper
FR2760754B1 (fr) * 1997-03-12 2003-06-06 Kodak Pathe Composition antistatique et produit photographique contenant une couche de cette composition
US5849472A (en) * 1997-03-13 1998-12-15 Eastman Kodak Company Imaging element comprising an improved electrically-conductive layer
US5891611A (en) * 1997-09-29 1999-04-06 Eastman Kodak Company Clay containing antistatic layer for photographic paper
US5981126A (en) * 1997-09-29 1999-11-09 Eastman Kodak Company Clay containing electrically-conductive layer for imaging elements
US5955190A (en) * 1997-09-29 1999-09-21 Eastman Kodak Company Antistatic layer for photographic paper
GB2449306A (en) * 2007-05-18 2008-11-19 Univ Sheffield Composite particles
US20230247895A1 (en) * 2020-06-26 2023-08-03 Loyola University Chicago Surface-Modified Electron Transport Layer of Organic Light-Emitting Diode

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525621A (en) * 1968-02-12 1970-08-25 Eastman Kodak Co Antistatic photographic elements
CA923359A (en) * 1970-03-12 1973-03-27 Meyer Karl-Otto Photographic materials
JPS53112732A (en) * 1977-03-14 1978-10-02 Fuji Photo Film Co Ltd Photosensitive material with improved physical properties of film
US4266016A (en) * 1978-08-25 1981-05-05 Mitsubishi Paper Mills, Ltd. Antistatic layer for silver halide photographic materials
US4225665A (en) * 1978-12-20 1980-09-30 E. I. Du Pont De Nemours And Company Photographic element in which the antistatic layer is interlinked in the base
JPS6049894B2 (ja) * 1980-12-23 1985-11-05 富士写真フイルム株式会社 写真感光材料
JPS60239747A (ja) * 1984-05-14 1985-11-28 Mitsubishi Paper Mills Ltd ハロゲン化銀写真材料
JPS61174542A (ja) * 1985-01-16 1986-08-06 イー・アイ・デユポン・ド・ネモアース・アンド・コンパニー ポリマー成形品に静電防止層を被覆する方法および写真フイルムを製造する方法
US4585730A (en) * 1985-01-16 1986-04-29 E. I. Du Pont De Nemours And Company Antistatic backing layer with auxiliary layer for a silver halide element
US4703000A (en) * 1985-09-30 1987-10-27 James River Graphics, Inc. Anti-brick/anti-static compositions useful for treating film surfaces and films coated therewith
JPS62150246A (ja) * 1985-12-24 1987-07-04 Mitsubishi Paper Mills Ltd 写真材料

Also Published As

Publication number Publication date
ES2033285T3 (es) 1993-03-16
GR3005814T3 (fr) 1993-06-07
JPS63173044A (ja) 1988-07-16
DE3780791D1 (de) 1992-09-03
GR920300032T1 (en) 1992-09-11
DE3700183A1 (de) 1988-07-14
US5104779A (en) 1992-04-14
EP0274017A2 (fr) 1988-07-13
ATE78938T1 (de) 1992-08-15
EP0274017A3 (en) 1990-02-28

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