EP0486982A1
Expired / Lapsed
EP
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Antistatic film bases and photographic elements comprising said antistatic film bases
Assignee: 3M Co
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Filing: 1991-11-18
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Granted: —
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Expires: 2011-11-18
Abstract
Abstract Polymeric film bases at least one side of which is coated with an antistatic layer comprising the reaction product of (a) a water-soluble, electrically conductive polymer containing carboxylic groups and (b) a polyfunctional epoxide crosslinking agent, and photographic elements comprising said film bases.
Inventors
- 👤 Alberto Valsecchi
- 👤 Kevin P. Hall
- 👤 Giuseppe Rolleri
- 👤 Rachel Hobson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 02:26
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/16; G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/122
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
44 words
An antistatic film base comprising a polymeric substrate having on at least one surface thereof an antistatic layer comprising the reaction product of (a) a water-soluble electrically conductive polymer having carboxylic groups and (b) an organic crosslinking agent comprising at least two epoxide groups.
Claim 2
Dependent Claim
12 words
The film base of claim 1 wherein the polymeric substrate comprises polyethyleneterephthalate.
Claim 3
Dependent Claim
18 words
The film base of claim 2 wherein said antistatic layer is on only one side of said substrate.
Claim 4
Dependent Claim
20 words
The film base of claim 2 wherein said antistatic layer consists essentially of the reaction product of (a) and (b).
Claim 5
Dependent Claim
20 words
The film base of claim 3 wherein said antistatic layer consists essentially of the reaction product of (a) and (b).
Claim 6
Dependent Claim
23 words
The film base of claim 1 wherein the carboxylic group containing polymer is a copolymer of sodium styrene sulfonic acid and maleic acid.
Claim 7
Dependent Claim
20 words
The film base of claim 1 wherein the antistatic layer has a coating weight of 0.01 g/m² to 1 g/m².
Claim 8
Dependent Claim
26 words
A photographic film comprising the film base of claim 1, having a silver halide emulsion layer adhered to at least one side of said film base.
Claim 9
Dependent Claim
23 words
The photographic film of claim 8 wherein said emulsion layer is on the same side of said film base as said antistatic layer.
Claim 10
Dependent Claim
23 words
The photographic film of claim 8 wherein said emulsion layer is on the opposite side of said film base as said antistatic layer.
Claim 11
Dependent Claim
17 words
the photographic film of claim 10 wherein an auxiliary gelatin layer is adhered to said antistatic layer.
Claim 12
Dependent Claim
26 words
A photographic film comprising the film base of claim 2 having a silver halide emulsion layer adhered to at least one side of said film base.
Claim 13
Dependent Claim
23 words
The photographic film of claim 12 wherein said emulsion layer is on the same side of said film base as said antistatic layer.
Claim 14
Dependent Claim
23 words
The photographic film of claim 12 wherein said emulsion layer is on the opposite side of said film base as said antistatic layer.
Claim 15
Dependent Claim
17 words
The photographic film of claim 14 wherein an auxiliary gelatin layer is adhered to said antistatic layer.
Claim 16
Dependent Claim
26 words
A photographic film comprising the film base of claim 3 having a silver halide emulsion layer adhered to at least one side of said film base.
Claim 17
Dependent Claim
23 words
The photographic film of claim 16 wherein said emulsion layer is on the same side of said film base as said antistatic layer.
Claim 18
Dependent Claim
23 words
The photographic film of claim 16 wherein said emulsion layer is on the opposite side of said film base as said antistatic layer.
Claim 19
Dependent Claim
17 words
The photographic film of claim 18 wherein an auxiliary gelatin layer is adhered to said antistatic layer.
Claim 20
Dependent Claim
26 words
A photographic film comprising the film base of claim 4 having a silver halide emulsion layer adhered to at least one side of said film base.
Claim 21
Dependent Claim
23 words
The photographic film of claim 20 wherein said emulsion layer is on the same side of said film base as said antistatic layer.
Claim 22
Dependent Claim
23 words
The photographic film of claim 20 wherein said emulsion layer is on the opposite side of said film base as said antistatic layer.
Claim 23
Dependent Claim
17 words
The photographic film of claim 22 wherein an auxiliary gelatin layer is adhered to said antistatic layer.
Claim 24
Dependent Claim
23 words
The photographic film of claim 8 wherein the carboxylic group containing polymer is a copolymer of sodium styrene sulfonic acid and maleic acid.
Claim 25
Dependent Claim
20 words
The photographic element of claim 8 wherein the antistatic layer has a coating weight of 0.01 g/m² to 1 g/m².
Claim 26
Dependent Claim
32 words
The photographic film of claim 8 wherein the antistatic layer is a subbing layer under at least one silver halide emulsion layer coated on one or both sides of the film base.
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EP0251531A2
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EP0386529A1
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