US3615552A - Improved polyethylene-coated paper photographic material - Google Patents

Improved polyethylene-coated paper photographic material Download PDF

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Publication number
US3615552A
US3615552A US876106A US3615552DA US3615552A US 3615552 A US3615552 A US 3615552A US 876106 A US876106 A US 876106A US 3615552D A US3615552D A US 3615552DA US 3615552 A US3615552 A US 3615552A
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US
United States
Prior art keywords
layer
photographic material
polyethylene
paper
bonding
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
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US876106A
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English (en)
Inventor
Justus Danhauser
Peter Kruck
Werner Krafft
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.)
Agfa Gevaert AG
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Agfa Gevaert AG
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Filing date
Publication date
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Publication of US3615552A publication Critical patent/US3615552A/en
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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
    • G03C1/91—Photosensitive materials characterised by the base or auxiliary layers characterised by subbing layers or subbing means
    • G03C1/93—Macromolecular substances therefor
    • 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

Definitions

  • the invention relates to a photographic material having a nontransparent layer support of paper coated with polyethylene.
  • polyethylenecoated paper as a layer support for photographic materials has been known for some time.
  • This material differs from ordinary paper in that at least one of the two surfaces of the paper which consists of hydrophilic cellulose fibers is coated with thin foils of polyethylene.
  • the advantage of such a support material is obvious.
  • the solutions of the processing baths customarily used in photographic practice can then no longer penetrate the felt of the paper which has been rendered hydrophobic on the surface This results in shorter washing and drying times, especially in high-speed processes.
  • the polyethylene layers may be very thin so that the optical properties which depend on the surface structure of the paper are not significantly altered by the polyethylene coating.
  • the polyethylene may also be rendered dull to improve the sharpness of the image.
  • hydrophilic, light-sensitive colloid layers which usually consist of gelatine, polyvinyl alcohol and/or other binders will only adhere with difficulty, if at all, to this hydrophobic support.
  • polyethylene surfaces can be rendered hydrophilic by treating them with oxidizing agents such as H HNO C1,, HOCl etc. or by treating them with sulfuric acid and substances which act as oxidizing agents in the presence of sulfuric acid. Bonding layers of gelatin which may have other macromolecular substances added to them may then be applied to these hydrophilic surfaces.
  • oxidizing agents such as H HNO C1,, HOCl etc.
  • sulfuric acid and substances which act as oxidizing agents in the presence of sulfuric acid Bonding layers of gelatin which may have other macromolecular substances added to them may then be applied to these hydrophilic surfaces.
  • polyethylene surfaces may be coated with bonding layers if they are fist subjected to electron radiation, for example, by means of a corona discharge.
  • the effect of irradiation can be determined by the boundary angle which the polyethylene surface fonns with the surface of a drop of water applied to it.
  • Polyethylene which has not been irradiated has a boundary angle of more than 90 which is reduced to 4075 after irradiation, which is sufficient for the activation required for applying a layer which will adhere firmly to the support.
  • a photographic material having a layer support of polyethylene-coated paper, an intermediate layer combination and at least one light-sensitive layer has now been found in which the intermediate layer combination comprises a layer of polymeric carbonic acid esters and a bonding layer.
  • the polimeric carbonic acid esters which may be used according to the invention are derived from aromatic dihydroxy compounds but, in particular, from bis-(hydroxyaryl)-alkanes in which the aryl groups may be substituted, e.g. by
  • Polymeric carbonic acid esters used according to the invention may be prepared in known manner from the said dihydroxy compounds by reacting them with aliphatic or aromatic diesters of carbonic acid or with phosgene or with bischloro-carbonic acid esters of aromatic dihydroxy compounds by processes such as those described, for example, in the following US. Pat. specifications Nos: 2,946,766, 3,022,272, 3,028,365 and 3,136,741 and the English Pat. specification No. 808,490.
  • the polymeric carbonic acid esters may not only be used on their own but also in admixture with other synthetic resins, provided that they are compatible with these resins.
  • additional synthetic resins nitrocellulose, ethyl cellulose or copolymers of ethylene and vinyl acetate may be mentioned.
  • Suitable solvents-for the polycarbonates for this purpose are methylene chloride, chloroform and in particular mixtures of these halogenated hydrocarbons with aromatic hydrocarbons such as benzene, toluene or xylene.
  • the polycarbonate layer adheres surprisingly firmly to the polyethylene layer. This effect is all the more surprising since it is well known that polyethylene and polycarbonate do not mix well with each other and that there is practically no solvent available for polyethylene.
  • a bonding layer which is to provide a bond between the hydrophobic support and the light-sensitive layer of hydrophilic colloids is applied to the polycarbonate intermediate layer in known manner.
  • This mixed acetal is soluble in organic solvents and swells strongly in water.
  • Mixed acetals can be obtained by a conventional process, e.g. by heating the components for several' hours ,inl a methanolic solution with sulfuric acid as catalyst.
  • aldehydes which have water-solubilizing groups are those which contain sulfonic acid, carboxy or hydroxyl groups in the aromatic nucleus, e.g. 4-sulfobenzaldehyde and 4-hydroxybenzaldehyde.
  • aldehydes without water-solubilizing groups are aromatic, araliphatic and aliphatic aldehydes, e.g. benzaldehyde, tolyl aldehyde, 4 and hydrocinnamic aldehyde.
  • the acetalization must not be performed completely, and the mixed acetals can still contain free hydroxy groups.
  • the degree of acetalization can be varied within wide limits. However, the best results are obtained if 50-60 percent of all hydroxy groups of the polyvinyl alcohol are acetalized. Suitable mixed acetals are described for example in US. Pat. specification No. 3,243,297.
  • partly saponified copolymers are prepared by known processes by saponification in methanol with sulfuric acid as catalyst, only the organic ester groups being partly saponified.
  • Suitable saponified copolymers contain approximately 45-70 percent by weight of vinyl chloride, 5-30 percent by weight of vinyl alcohol and 10-40 percent by weight of vinyl ester.
  • Copolymers of vinyl chloride and a, B-unsaturat'ed carboxylic acids or partly saponified copolymers of vinyl chloride and esters of the above-mentioned acid may also be used for this purpose.
  • cross-linking agents also have an advantageous effect on bonding.
  • the cross-linking agents used may be linear copolymers of unsaturated acid anhydrides with other polymerizable monomers, e.g. as described in US. Pat. specifications Nos. 2,047,398 and 2,913,437. Copolymers of establishes acetate and maleic acid anhydride having an acid anhydride content of 40-40 mols percent, based on the copolymer, are found to be especially advantageous.
  • the mixed acetal is applied to the polycarbonate intermediate layer by a dipping or surface application process in admixture with the above-mentioned copolymer and, if desired, with cross-linking agents.
  • Suitable solvents are organic solvents, but in particular mixtures of acetone and methanol.
  • the paper is dried at 50 to 90 C. and then treated with the the following solution:
  • a photographic material having a nontransparent layer support of polyethylene-coated paper, an intermediate layer combination and at least one light-sensitive silver halide layer,
  • the intermediate layer combination comprises a layer of polymeric carbonic acid esters based on bis-(hydroxyaryl)- alkanes and a bonding layer which establishes a bond with the light-sensitive layer.
  • a photographic material according to claim 1, which the intermediate layer combination comprises a layer of polymeric carbonic acid esters based on 2,2-bis-(4-hydroxyphenyl)- propane and a bonding layer.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
US876106A 1968-11-19 1969-11-12 Improved polyethylene-coated paper photographic material Expired - Lifetime US3615552A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681809606 DE1809606A1 (de) 1968-11-19 1968-11-19 Verbessertes photographisches Material

Publications (1)

Publication Number Publication Date
US3615552A true US3615552A (en) 1971-10-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
US876106A Expired - Lifetime US3615552A (en) 1968-11-19 1969-11-12 Improved polyethylene-coated paper photographic material

Country Status (6)

Country Link
US (1) US3615552A (enrdf_load_stackoverflow)
BE (1) BE741821A (enrdf_load_stackoverflow)
CH (1) CH524157A (enrdf_load_stackoverflow)
DE (1) DE1809606A1 (enrdf_load_stackoverflow)
FR (1) FR2023651A1 (enrdf_load_stackoverflow)
GB (1) GB1297971A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933503A (en) * 1974-05-06 1976-01-20 Herman Schonberg Carrier for transferring images
US4186018A (en) * 1970-07-29 1980-01-29 Fuji Photo Film Co., Ltd. Surface treatment of a support member for photographic light-sensitive materials
US4237206A (en) * 1977-12-21 1980-12-02 Fuji Photo Film Co., Ltd. Photographic paper base with seperate reflective layer
US4424273A (en) 1981-05-26 1984-01-03 Minnesota Mining And Manufacturing Company Subbing polyester support bases and photographic film comprising said improved support bases
US5290672A (en) * 1984-11-24 1994-03-01 The Wiggins Teape Group Limited Base paper for photographic prints
US5529893A (en) * 1994-09-28 1996-06-25 Minnesota Mining And Manufacturing Company Photographic elements comprising antistatic layers
US5534381A (en) * 1995-07-06 1996-07-09 Minnesota Mining And Manufacturing Company Acetal polymers useful in photosensitive compositions
US20060246239A1 (en) * 2005-04-29 2006-11-02 Tienteh Chen Porous inkjet recording material

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186018A (en) * 1970-07-29 1980-01-29 Fuji Photo Film Co., Ltd. Surface treatment of a support member for photographic light-sensitive materials
US3933503A (en) * 1974-05-06 1976-01-20 Herman Schonberg Carrier for transferring images
US4237206A (en) * 1977-12-21 1980-12-02 Fuji Photo Film Co., Ltd. Photographic paper base with seperate reflective layer
US4424273A (en) 1981-05-26 1984-01-03 Minnesota Mining And Manufacturing Company Subbing polyester support bases and photographic film comprising said improved support bases
US5290672A (en) * 1984-11-24 1994-03-01 The Wiggins Teape Group Limited Base paper for photographic prints
US5529893A (en) * 1994-09-28 1996-06-25 Minnesota Mining And Manufacturing Company Photographic elements comprising antistatic layers
US5534381A (en) * 1995-07-06 1996-07-09 Minnesota Mining And Manufacturing Company Acetal polymers useful in photosensitive compositions
US20060246239A1 (en) * 2005-04-29 2006-11-02 Tienteh Chen Porous inkjet recording material

Also Published As

Publication number Publication date
FR2023651A1 (enrdf_load_stackoverflow) 1970-08-21
DE1809606A1 (de) 1970-06-11
CH524157A (de) 1972-06-15
GB1297971A (enrdf_load_stackoverflow) 1972-11-29
BE741821A (enrdf_load_stackoverflow) 1970-05-19

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