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US3839042A Expired / Lapsed US ⏱️ 0.0 years remaining

Hardening hydrophilic colloid silver halide emulsion layer with a 2-haloethylsulfonyl compound

Assignee: Eastman Kodak Co
•
Filing: 1972-09-29
•
Granted: 1974-10-01
•
Expires: 1992-09-29
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Abstract

Abstract Photographic elements are disclosed containing a hydrophilic colloid layer hardened with a compound having the structural formula:

Inventors

  • 👤 R Silverman
  • 👤 C Wright

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 06:29
CPC Classifications
C; C07; C07C; C07C317/00; C07C317/02; C07C317/10

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 26 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND AT LEAST ONE HYDROPHILIC COLLOID LAYER CONTAINING A RADIATIONSENSITIVE SILVER HALIDE HARDENED WITH A COMPOUND HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim 26 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND AT LEAST ONE HYDROPHILIC COLLOID LAYER CONTAINING A RADIATIONSENSITIVE SILVER HALIDE HARDENED WITH A COMPOUND HAVING THE STRUCTURAL FORMULA:
Claim 3
Dependent Claim 75 words
A photographic element comprising a support and at least one gelatin layer containing a radiation-sensitive silver halide hardened with a compound having the structural formula: XCH2CH2SO2Q(OQ)mSO2CH2CH2X wherein X in each occurrence is halogen; Q is an aliphatic or phenyl substituted aliphatic divalent hydrocarbon radical having from one to six aliphatic carbon atoms, said radical being selected from the group consisting of alkylene and alkenylene; and m is an integer of from zero to three inclusive.
Claim 4
Dependent Claim 75 words
A photographic element comprising a support and at least one gelatin layer containing a radiation-sensitive silver halide hardened with a compound having the structural formula: XCH2CH2SO2Q(OQ)mSO2CH2CH2X wherein X in each occurrence is halogen; Q is an aliphatic or phenyl substituted aliphatic divalent hydrocarbon radical having from one to six aliphatic carbon atoms, said radical being selected from the group consisting of alkylene and alkenylene; and m is an integer of from zero to three inclusive.
Claim 5
Dependent Claim 34 words
A photographic element according to claim 1 in which said layer contains from 0.5 to 6 percent by weight of said hardener compound based on the weight of hardenable colloid present in said layer.
Claim 6
Dependent Claim 15 words
A photographic element according to claim 1 in which said layer contains a dye-forming coupler.
Claim 7
Dependent Claim 25 words
A photographic element according to claim 1 in which said hardener compound has 2 2-chloroethylsulfonyl radicals coupled through an aliphatic hydrocarbon or ether linking radical.
Claim 8
Dependent Claim 16 words
A photographic element according to claim 1 in which said hardener compound is a bis(2-haloethylsulfonylalkyl) ether.
Claim 9
Dependent Claim 15 words
A photographic element according to claim 1 in which said hardener compound is a bis(2-haloethylsulfonyl)dioxaalkane.
Claim 10
Dependent Claim 15 words
A photographic element according to claim 1 in which said hardener compound is a bis(2-haloethylsulfonyl)-alkane.
Claim 11
Dependent Claim 15 words
A photographic element according to claim 1 in which said hardener compound is a bis(2-haloethylsulfonyl)-alkene.
Claim 12
Dependent Claim 16 words
A photographic element according to claim 1 in which said hardener compound exhibits the structural formula:
Claim 13
Dependent Claim 125 words
In a process comprised of the steps of forming a radiation-sensitive gelatin silver halide emulsion coating on a support, subjecting the radiation-sensitive gelatin coating to an image forming exposure, hardening the emulsion coating and developing within the gelatin coating a photographic record of the exposure image, the improvement comprising hardening the emulsion coating after exposure and before image development by introducing into the emulsion coating a hardening concentration of a compound having the structural formula: XCH2CH2SO2Q(OQ)mSO2CH2CH2X wherein X is each occurrence is halogen; Q is an aliphatic or phenyl substituted aliphatic divalent hydrocarbon radical having from one to six aliphatic carbon atoms, Said radical being selected from the group consisting of alkylene and alkenylene; and m is an integer of from zero to three inclusive.
Claim 14
Dependent Claim 125 words
In a process comprised of the steps of forming a radiation-sensitive gelatin silver halide emulsion coating on a support, subjecting the radiation-sensitive gelatin coating to an image forming exposure, hardening the emulsion coating and developing within the gelatin coating a photographic record of the exposure image, the improvement comprising hardening the emulsion coating after exposure and before image development by introducing into the emulsion coating a hardening concentration of a compound having the structural formula: XCH2CH2SO2Q(OQ)mSO2CH2CH2X wherein X is each occurrence is halogen; Q is an aliphatic or phenyl substituted aliphatic divalent hydrocarbon radical having from one to six aliphatic carbon atoms, Said radical being selected from the group consisting of alkylene and alkenylene; and m is an integer of from zero to three inclusive.

References Cited (Backward Citations)

US3305376A Cited
US3647453A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-09-30 1978-04-01 1978-10-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-09-30 1982-04-01 1982-10-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-09-30 1986-04-01 1986-10-01 $7700.00 Window Closed / Lapsed

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