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US3071466A Expired / Lapsed US ⏱️ 0.0 years remaining

Photographic silver halide films comprising an anchoring layer

Assignee: Agfa Gevaert NV
•
Filing: 1959-07-07
•
Granted: 1963-01-01
•
Expires: 1979-07-07
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Abstract

Abstract 894,590. Photographic films. AGFA A.G. July 8, 1959 [July 9, 1958], No. 23493/59. Class 98(2). A hydrophobic film support for a silver halide emulsion layer is subbed with the reaction product of a compound having at least two 2;3-epoxypropyl groups and a mixed acetal of a vinyl alcohol polymer with an aldehyde containing as water - solubilizing group a hydroxy, carboxy or sulphonic acid group or a salt of such acid groups, and an aldehyde devoid of said water-solubilizing groups. The vinyl alcohol polymer may be obtained by partial hydrolysis of a polyvinyl ester or by partial or complete hydrolysis of a copolymer of a vinyl ester with vinyl chloride or ethylene. The aldehyde containing a watersolubilizing group may be benzaldehyde-2- sulphonic acid, benzaldehyde-2;4-disulphonic acid or 2- or 4-hydroxy-benzaldehyde. The aldehyde devoid of water-solubilizing groups may be benzaldehyde, 2- or 4-tolyl aldehyde or 2- or 4-chlorobenzaldehyde. The epoxy compound may be glycol diglycidyl ether, butane-1,4-diol diglycidyl ether, glycerol triglycidyl ether, 1,1,1-trimethylol-propane triglycidyl ether, pentaerythritol tetraglycidyl ether, resorcinol diglycidyl ether, glycerol diglycidyl ether, the diglycidyl ethers of diphenylol-propane or diphenylol-methane, mono- or polyamines such as methyl-, ethyl-, propyl-, butyl- or hexyl-amines in which the two H atoms on each nitrogen are replaced by 2;3-epoxypropyl groups; ethylene-, propylene- or hexamethylene-diamine in which the two H atoms of each amino group are replaced by 2;3-epoxypropyl groups, aromatic amines such as aniline, 2- or 4-tolylamine, or 2- or 4-chlorophenylamine in which the two amino H atoms are replaced by 2;3-epoxypropyl groups, 4, 41-di(alkylamino)-diphenylmethane in which the H atom of each alkylamino group is replaced by a 2;3-epoxypropyl group, and polycarboxylic acids such as malonic, succinic, adipic, phthalic or terephthalic acids in which the H atoms of the acid groups are replaced by 2;3-epoxypropyl groups. The subbing layers also may contain film-forming polymeric compounds containing hydroxy groups. The subbing layer may be heated after coating to effect cross-linking. Specification 894,589 is referred to.

Inventors

  • 👤 Klockgether Helfried
  • 👤 Himmelmann Wolfgang
  • 👤 Wahl Ottmar

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 11:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; C; C08; C08F; C08F8/00; C08F8/48; C08J; C08J7/00; C08J7/12; C08F2810/00; C08F2810/20; Y; Y10; Y10S; Y10S430/00; Y10S430/136

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 278 words
A PHOTOGRAPHIC ELEMENT COMPRISING (A) A HYDROPHOBIC FILM SUPPORT, (B) A HYDROPHILIC LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER, THE BINDING AGENT OF WHICH CONSISTS ESSENTIALLY OF GELATIN, AND (C) AN ANCHORING LAYER BETWEEN THE SAID SUPPORT AND THE SAID LIGHT-SENSITIVE LAYER, THE SAID ANCHORING LAYER CONTAINING A POLYMERIC PRODUCT OF (I) A MIXED ACETAL OF A VINYL ALCOHOL POLYMER HAVING 50 TO 65% OF ITS ORIGINAL FREE HYDROXY GROUPS ACETALIZED WITH A COMBINATION OF AN ALDEHYDE CONTAINING A WATER-SOLUBILIZING SUBSTITUENT OF THE CLASS CONSISTING OF HYDROXY, CARBOXY, AND SULPHO GROUPS AND CARBOXY AND SULPHO GROUPS WHICH HAVE BEEN NEUTRALIZED WITH ALKALI METALS, AMMONIA, AND AMINES, AND AN ALDEHYDE OF A HYDROPHOBIC STRUCTURE DEVOID OF THE AFOREMENTIONED WATER-SOLUBILIZING GROUPS, (II) A POLYMERIC PRODUCT OF THE CLASS CONSISTING OF (A) A COPOLYMER OF A HYDROPHOBIC COMPONENT OF THE CLASS CONSISTING OF VINYL CHLORIDE, STYRENE, AND VINYL ETHERS WITH A HYDROPHILIC COMPONENT CONTAINING HYDROXY GROUPS OF THE CLASS CONSISTING OF ALLYL ALCOHOL, STYRENE SUBSTITUTED WITH HYDROXY GROUPS, AND PARTIALLY SAPONIFIED VINYL ESTERS, THE ESTER GROUPING OF WHICH HAS UP TO 5 CARBON ATOMS, AND (B) A POLYMERIC PRODUCT CONTAINING HYDROXY GROUPS OF THE CLASS CONSISTING OF PARTIALLY SAPONIFIED POLYVINYL ESTERS AND PARTIALLY SAPONIFIED CELLULOSE ESTERS, THE AMOUNT OF THE SAIID POLYMERIC PRODUCT BEING 10 TO 50% BY WEIGHT OF THE COPOLYMER OF THE ANCHORING LAYER, AND (III) 5 TO 10%, BASED ON THE TOTAL AMOUNT OF THE LAYER-FORMING POLYMERIC PRODUCT, OF A 1,2-EPOXY COMPOUND OF THE CLASS CONSISTING OF A POLYGLYCIDYL ETHERS OF POLYHYDRIC ALCOHOLS, POLYGLYCIDYL ETHERS OF POLYHYDRIC PHENOLS, AND ALIPHATIC, CYCLOALIPHATIC, AND AROMATIC TERTIARY AMINES IN WHICH TWO 2,3-EPOXYPROPYL GROUPS ARE BONDED TO NITROGEN, AND POLYGLYCIDYL ESTERS OF PLYCARBOXYLIC ACIDS.
Claim 2
Dependent Claim 278 words
A PHOTOGRAPHIC ELEMENT COMPRISING (A) A HYDROPHOBIC FILM SUPPORT, (B) A HYDROPHILIC LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER, THE BINDING AGENT OF WHICH CONSISTS ESSENTIALLY OF GELATIN, AND (C) AN ANCHORING LAYER BETWEEN THE SAID SUPPORT AND THE SAID LIGHT-SENSITIVE LAYER, THE SAID ANCHORING LAYER CONTAINING A POLYMERIC PRODUCT OF (I) A MIXED ACETAL OF A VINYL ALCOHOL POLYMER HAVING 50 TO 65% OF ITS ORIGINAL FREE HYDROXY GROUPS ACETALIZED WITH A COMBINATION OF AN ALDEHYDE CONTAINING A WATER-SOLUBILIZING SUBSTITUENT OF THE CLASS CONSISTING OF HYDROXY, CARBOXY, AND SULPHO GROUPS AND CARBOXY AND SULPHO GROUPS WHICH HAVE BEEN NEUTRALIZED WITH ALKALI METALS, AMMONIA, AND AMINES, AND AN ALDEHYDE OF A HYDROPHOBIC STRUCTURE DEVOID OF THE AFOREMENTIONED WATER-SOLUBILIZING GROUPS, (II) A POLYMERIC PRODUCT OF THE CLASS CONSISTING OF (A) A COPOLYMER OF A HYDROPHOBIC COMPONENT OF THE CLASS CONSISTING OF VINYL CHLORIDE, STYRENE, AND VINYL ETHERS WITH A HYDROPHILIC COMPONENT CONTAINING HYDROXY GROUPS OF THE CLASS CONSISTING OF ALLYL ALCOHOL, STYRENE SUBSTITUTED WITH HYDROXY GROUPS, AND PARTIALLY SAPONIFIED VINYL ESTERS, THE ESTER GROUPING OF WHICH HAS UP TO 5 CARBON ATOMS, AND (B) A POLYMERIC PRODUCT CONTAINING HYDROXY GROUPS OF THE CLASS CONSISTING OF PARTIALLY SAPONIFIED POLYVINYL ESTERS AND PARTIALLY SAPONIFIED CELLULOSE ESTERS, THE AMOUNT OF THE SAIID POLYMERIC PRODUCT BEING 10 TO 50% BY WEIGHT OF THE COPOLYMER OF THE ANCHORING LAYER, AND (III) 5 TO 10%, BASED ON THE TOTAL AMOUNT OF THE LAYER-FORMING POLYMERIC PRODUCT, OF A 1,2-EPOXY COMPOUND OF THE CLASS CONSISTING OF A POLYGLYCIDYL ETHERS OF POLYHYDRIC ALCOHOLS, POLYGLYCIDYL ETHERS OF POLYHYDRIC PHENOLS, AND ALIPHATIC, CYCLOALIPHATIC, AND AROMATIC TERTIARY AMINES IN WHICH TWO 2,3-EPOXYPROPYL GROUPS ARE BONDED TO NITROGEN, AND POLYGLYCIDYL ESTERS OF PLYCARBOXYLIC ACIDS.

References Cited (Backward Citations)

US2133110A Cited
US2310943A Cited
US2713565A Cited
US2713567A Cited
US2734825A Cited
US2844571A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1965-12-31 1966-07-02 1967-01-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1969-12-31 1970-07-02 1971-01-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1973-12-31 1974-07-02 1975-01-01 $7700.00 Window Closed / Lapsed

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