Patent US1069093A successfully refreshed from Google Patents.
Patent US4459352A successfully refreshed from Google Patents.
US4459352A
Expired / Lapsed
US
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Conductive coating composition and composite bases and elements containing same
Assignee: Eastman Kodak Co
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Filing: 1982-12-27
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Granted: 1984-07-10
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Expires: 2002-12-27
Abstract
Abstract An aqueous coating composition comprises (a) a hydrophilic binder; (b) an ester of cellulose having at least 8 acyl groups per C 24 cellulose unit wherein at least a majority of the acyl groups are derived from an aliphatic polycarboxylic acid having from 3 to 6 carbon atoms; or a salt of the ester; and (c) a hardening agent in an amount sufficient to render the composition water-insoluble after coating and drying of the composition. This coating composition is useful for forming water-insoluble, conductive and highly-adherent layers in composite bases or elements, and particularly in photographic elements having hydrophobic supports. The conductive layers can be used, for example, as conducive subbing layers or conductive pelloid layers.
Inventors
- 👤 Raymond T. Jones
- 👤 James E. Kelly
- 👤 Karen L. Mott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:45
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; C; C09; C09D; C09D101/00; C09D101/08; C09D101/10; G03C1/85; G03C1/89; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982; Y10T428/31986
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
93 words
An aqueous coating composition which is capable of forming a water-insoluble conductive and highly-adherent layer on a support, said coating composition comprising: (a) a hydrophilic binder; (b) an ester of cellulose having at least 8 acyl groups per C 24 cellulose unit wherein at least a majority of said acyl groups are derived from an aliphatic polycarboxylic acid having from 3 to 6 carbon atoms; or a salt of said ester; and (c) a hardening agent in an amount sufficient to render said composition water-insoluble after coating and drying of said coating composition.
Claim 2
Dependent Claim
93 words
An aqueous coating composition which is capable of forming a water-insoluble conductive and highly-adherent layer on a support, said coating composition comprising: (a) a hydrophilic binder; (b) an ester of cellulose having at least 8 acyl groups per C 24 cellulose unit wherein at least a majority of said acyl groups are derived from an aliphatic polycarboxylic acid having from 3 to 6 carbon atoms; or a salt of said ester; and (c) a hardening agent in an amount sufficient to render said composition water-insoluble after coating and drying of said coating composition.
Claim 3
Dependent Claim
16 words
The coating composition of claim 1 wherein said ester salt is an alkali metal ester salt.
Claim 4
Dependent Claim
14 words
The coating composition of claim 2 wherein said ester salt is a potassium salt.
Claim 5
Dependent Claim
22 words
The coating composition of claim 1 wherein at least about two-thirds of said acyl groups are derived from said aliphatic polycarboxylic acid.
Claim 6
Dependent Claim
17 words
The coating composition of claim 1 having at least 10 acyl groups per C 24 cellulose unit.
Claim 7
Dependent Claim
14 words
The coating composition of claim 1 wherein said polycarboxylic acid is a dicarboxylic acid.
Claim 8
Dependent Claim
29 words
The coating composition of claim 1 wherein said hardening agent is present in an amount of from about 10 to about 30 percent, based on total composition dry weight.
Claim 9
Dependent Claim
85 words
A composite base comprising a support having on at least one side thereof, a water-insoluble, conductive and highly-adherent layer composed of: (a) a hydrophilic binder; (b) an ester of cellulose having at least 8 acyl groups per C 24 cellulose unit wherein at least a majority of said acyl groups are derived from an aliphatic polycarboxylic acid having from 3 to 6 carbon atoms; or a salt of said ester; and (c) a hardening agent in an amount sufficient to render said conductive layer water-insoluble.
Claim 10
Dependent Claim
85 words
A composite base comprising a support having on at least one side thereof, a water-insoluble, conductive and highly-adherent layer composed of: (a) a hydrophilic binder; (b) an ester of cellulose having at least 8 acyl groups per C 24 cellulose unit wherein at least a majority of said acyl groups are derived from an aliphatic polycarboxylic acid having from 3 to 6 carbon atoms; or a salt of said ester; and (c) a hardening agent in an amount sufficient to render said conductive layer water-insoluble.
Claim 11
Dependent Claim
10 words
The composite base of claim 8 having a hydrophobic support.
Claim 12
Dependent Claim
100 words
A composite element comprising a support and on at least one side thereof, a hydrophilic layer, said hydrophilic layer being adhered to said support with a water-insoluble, conductive and highly-adherent subbing layer composed of: (a) a first hydrophilic binder; and (b) an ester of cellulose having at least 8 acyl groups per C 24 cellulose unit wherein at least a majority of said acyl groups are derived from an aliphatic polycarboxylic acid having from 3 to 6 carbon atoms; or a salt of said ester; and (c) a hardening agent in an amount sufficient to render said subbing layer water-insoluble.
Claim 13
Dependent Claim
100 words
A composite element comprising a support and on at least one side thereof, a hydrophilic layer, said hydrophilic layer being adhered to said support with a water-insoluble, conductive and highly-adherent subbing layer composed of: (a) a first hydrophilic binder; and (b) an ester of cellulose having at least 8 acyl groups per C 24 cellulose unit wherein at least a majority of said acyl groups are derived from an aliphatic polycarboxylic acid having from 3 to 6 carbon atoms; or a salt of said ester; and (c) a hardening agent in an amount sufficient to render said subbing layer water-insoluble.
Claim 14
Dependent Claim
44 words
The composite element of claim 10 wherein said hydrophilic layer is formed from a hydrophilic coating composition comprising a second hydrophilic binder and a diffusible hardening agent which is capable of diffusing into said subbing layer and rendering said ester or salt thereof water-insoluble.
Claim 15
Dependent Claim
10 words
The composite element of claim 10 having a hydrophobic support.
Claim 16
Dependent Claim
11 words
The composite element of claim 12 having a polyester film support.
Claim 17
Dependent Claim
103 words
A radiation-sensitive element comprising a support, a radiation-sensitive layer on at least one side of said support, and a water-insoluble, conductive and highly-adherent layer adjacent to said support on at least one side thereof, said conductive layer composed of: (a) a hydrophilic binder; (b) an ester of cellulose having at least 8 acyl groups per C 24 cellulose unit wherein at least a majority of said acyl groups are derived from an aliphatic polycarboxylic acid having from 3 to 6 carbon atoms; or a salt of said ester; and (c) a hardening agent in an amount sufficient to render said conductive layer water-insoluble.
Claim 18
Dependent Claim
103 words
A radiation-sensitive element comprising a support, a radiation-sensitive layer on at least one side of said support, and a water-insoluble, conductive and highly-adherent layer adjacent to said support on at least one side thereof, said conductive layer composed of: (a) a hydrophilic binder; (b) an ester of cellulose having at least 8 acyl groups per C 24 cellulose unit wherein at least a majority of said acyl groups are derived from an aliphatic polycarboxylic acid having from 3 to 6 carbon atoms; or a salt of said ester; and (c) a hardening agent in an amount sufficient to render said conductive layer water-insoluble.
Claim 19
Dependent Claim
23 words
The element of claim 14 wherein said conductive layer is formed from an aqueous coating composition comprising said components (a), (b) and (c).
Claim 20
Dependent Claim
24 words
The element of claim 14 wherein said conductive layer is located on a side of said support opposite to that of said radiation-sensitive layer.
Claim 21
Dependent Claim
14 words
The element of claim 14 wherein said radiation-sensitive layer is a photographic emulsion layer.
Claim 22
Dependent Claim
10 words
The element of claim 14 having a polyester film support.
Claim 23
Dependent Claim
11 words
The element of claim 18 having a poly(ethylene terephthalate) film support.
Claim 24
Dependent Claim
20 words
The element of claim 14 wherein said conductive layer is a subbing layer adhering said radiation-sensitive layer to said support.
Claim 25
Dependent Claim
17 words
The element of claim 14 wherein said conductive layer comprises an alkali metal salt of said ester.
Claim 26
Dependent Claim
21 words
The element of claim 14 wherein at least about two-thirds of said acyl groups are derived from said aliphatic polycarboxylic acid.
Claim 27
Dependent Claim
13 words
The element of claim 14 wherein said polycarboxylic acid is a dicarboxylic acid.
Claim 28
Dependent Claim
12 words
The element of claim 23 wherein said dicarboxylic acid is succinic acid.
Claim 29
Dependent Claim
13 words
The element of claim 14 wherein said hardening agent is butanediol diglycidyl ether.
Claim 30
Dependent Claim
32 words
The element of claim 14 wherein said water-soluble ester is present in said conductive layer in an amount of from about 50 to about 80 percent, based on total composition dry weight.
Claim 31
Dependent Claim
21 words
The element of claim 14 wherein said conductive layer has a surface resistivity less than about 1×10 9 ohms per square.
Claim 32
Dependent Claim
82 words
A photographic element comprising a polyester support and, on at least one side thereof, a photosensitive silver halide emulsion layer, said emulsion layer adhered to said support with a water-insoluble, conductive and highly-adherent subbing layer formed from an aqueous coating composition comprising: (a) gelatin; (b) potassium cellulose succinate containing at least 10 succinyl groups per C 24 cellulose unit; and (c) butanediol diglycidyl ether in an amount sufficient to render said subbing layer water-insoluble after coating and drying of said coating composition.
Claim 33
Dependent Claim
82 words
A photographic element comprising a polyester support and, on at least one side thereof, a photosensitive silver halide emulsion layer, said emulsion layer adhered to said support with a water-insoluble, conductive and highly-adherent subbing layer formed from an aqueous coating composition comprising: (a) gelatin; (b) potassium cellulose succinate containing at least 10 succinyl groups per C 24 cellulose unit; and (c) butanediol diglycidyl ether in an amount sufficient to render said subbing layer water-insoluble after coating and drying of said coating composition.
Claim 34
Dependent Claim
99 words
A photographic element comprising a support and, on at least one side thereof, a photosensitive silver halide emulsion layer which is adhered to said support by a water-insoluble conductive subbing layer, said subbing layer comprising: (a) a hydrophilic binder, (b) a water-soluble salt of a cellulose ester, said cellulose ester having at least 8 acyl groups per C 24 cellulose unit wherein at least a majority of said acyl groups are derived from an aliphatic polycarboxylic acid having from 3 to 6 carbon atoms, and (c) a hardening agent in an amount sufficient to render said subbing layer water-insoluble.
Claim 35
Dependent Claim
99 words
A photographic element comprising a support and, on at least one side thereof, a photosensitive silver halide emulsion layer which is adhered to said support by a water-insoluble conductive subbing layer, said subbing layer comprising: (a) a hydrophilic binder, (b) a water-soluble salt of a cellulose ester, said cellulose ester having at least 8 acyl groups per C 24 cellulose unit wherein at least a majority of said acyl groups are derived from an aliphatic polycarboxylic acid having from 3 to 6 carbon atoms, and (c) a hardening agent in an amount sufficient to render said subbing layer water-insoluble.
Claim 36
Dependent Claim
77 words
A photographic element comprising a polyester support and, on at least one side thereof, a photosensitive silver halide emulsion layer which is adhered to said support by a water-insoluble conductive subbing layer, said subbing layer comprising: (a) a hydrophilic binder, (b) a water-soluble salt of a cellulose succinate, said cellulose succinate containing at least 10 succinyl groups per C 24 cellulose unit, and (c) a hardening agent in an amount sufficient to render said subbing layer water-insoluble.
Claim 37
Dependent Claim
77 words
A photographic element comprising a polyester support and, on at least one side thereof, a photosensitive silver halide emulsion layer which is adhered to said support by a water-insoluble conductive subbing layer, said subbing layer comprising: (a) a hydrophilic binder, (b) a water-soluble salt of a cellulose succinate, said cellulose succinate containing at least 10 succinyl groups per C 24 cellulose unit, and (c) a hardening agent in an amount sufficient to render said subbing layer water-insoluble.
Claim 38
Dependent Claim
77 words
A photographic element comprising a poly(ethylene terephthalate) support and, on at least one side thereof, a photosensitive silver halide gelatin emulsion layer which is adhered to said support by a water-insoluble conductive subbing layer, said subbing layer comprising: (a) gelatin, (b) a water-soluble salt of a cellulose succinate, said cellulose succinate containing at least 10 succinyl groups per C 24 cellulose unit, and (c) a hardening agent in an amount sufficient to render said subbing layer water-insoluble.
Claim 39
Dependent Claim
77 words
A photographic element comprising a poly(ethylene terephthalate) support and, on at least one side thereof, a photosensitive silver halide gelatin emulsion layer which is adhered to said support by a water-insoluble conductive subbing layer, said subbing layer comprising: (a) gelatin, (b) a water-soluble salt of a cellulose succinate, said cellulose succinate containing at least 10 succinyl groups per C 24 cellulose unit, and (c) a hardening agent in an amount sufficient to render said subbing layer water-insoluble.
Claim 40
Dependent Claim
77 words
A photographic element comprising a poly(ethylene terephthalate) support and, on at least one side thereof, a photosensitive silver halide gelatin emulsion layer which is adhered to said support by a water-insoluble conductive subbing layer, said subbing layer comprising: (a) gelatin, (b) a potassium salt of a cellulose succinate, said cellulose succinate containing at least 10 succinyl groups per C 24 cellulose unit, and (c) butanediol diglycidyl ether in an amount sufficient to render said subbing layer water-insoluble.
Claim 41
Dependent Claim
77 words
A photographic element comprising a poly(ethylene terephthalate) support and, on at least one side thereof, a photosensitive silver halide gelatin emulsion layer which is adhered to said support by a water-insoluble conductive subbing layer, said subbing layer comprising: (a) gelatin, (b) a potassium salt of a cellulose succinate, said cellulose succinate containing at least 10 succinyl groups per C 24 cellulose unit, and (c) butanediol diglycidyl ether in an amount sufficient to render said subbing layer water-insoluble.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-10 | 1988-01-09 | 1988-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-10 | 1992-01-09 | 1992-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-10 | 1996-01-09 | 1996-07-10 | $7700.00 | Window Closed / Lapsed |