EP0018601A1
Expired / Lapsed
EP
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Antistatic coating compositions and elements
Assignee: Eastman Kodak Co
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Filing: 1980-04-25
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Granted: —
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Expires: 2000-04-25
Abstract
Abstract An antistatic coating composition useful in forming conductive layers comprises a conductive, waterdispersible, particulate polymer and a crosslinkable latex binder. The crosslinkable latex has a first glass transition temperature before crosslinking less than 50°C and a second glass transition temperature after crosslinking an coalescing greater then 50°C wherein the first and second glass transition temperatures differ by at least 4°C. The coating composition can be coated on a variety of supports to produce conductive elements. The coating compositions are particularly useful in forming photographic elements which are resistant to the buildup of static charge and ferrotyping.
Inventors
- 👤 Donald Allen Upson
- 👤 Gerald Allen Campbell
- 👤 Diane Ellen Kestner
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 18:22
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/24; G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
64 words
A coating composition comprising: a) a conductive, water-dispersible, particulate polymer and b) a latex binder; characterized in that the latex is a crosslinkable latex having a first glass transition temperature before crosslinking less than 50° C and a second glass transition temperature after crosslinking and coalescing greater than 50° C. wherein the first and second glass transition temperatures differ by at least 4° C.
Claim 2
Dependent Claim
64 words
A coating composition comprising: a) a conductive, water-dispersible, particulate polymer and b) a latex binder; characterized in that the latex is a crosslinkable latex having a first glass transition temperature before crosslinking less than 50° C and a second glass transition temperature after crosslinking and coalescing greater than 50° C. wherein the first and second glass transition temperatures differ by at least 4° C.
Claim 3
Dependent Claim
62 words
A coating composition according to Claim 1- wherein the latex binder comprises polymers represented by the formula: wherein A and B are the same or different and are copolymerized, α,/β-ethylenically unsaturated monomers; C is a crosslinkable, copolymerized, α,β-ethylenically unsaturated monomer; x is 5 to 80 weight percent; y is 5 to 80 weight percent; and z is 15 to 40 weight percent.
Claim 4
Dependent Claim
33 words
A coating composition according to Claim 2 wherein A is an alkyl methacrylate, B is styrene or a haloalkyl methacrylate and C is derived from a monomer which contains an active epoxide group.
Claim 5
Dependent Claim
26 words
A coating composition according to Claim 3 wherein A is n-lauryl methacrylate or n-butyl methacrylate, B is styrene or 2-chloroethyl methacrylate, and C is glycidyl methacrylate.
Claim 6
Dependent Claim
30 words
A coating composition according to Claim 4 wherein x is 25 to 65 weight percent, y is 25 to 65 weight percent and z is 15 to 35 weight percent.
Claim 7
Dependent Claim
103 words
A coating composition according to Claim 1 wherein the conductive, water-dispersible, particulate polymer is represented by the formula: wherein: CPA is a polymerized monomer containing at least two ethylenically unsaturated groups; CPB is a polymerized copolymerizable, α,β ethylenically unsaturated monomer; Q is N or P; Rl , R2 and R3 are each carbocyclic or alkyl, and R 1 , R 2 and R 3 together can form the atoms necessary to complete a heterocyclic ring with Q; M is an anion; a is 0.1 to 20 mole percent; b is 0 to 90 mole percent; and c is 10 to 99 mole percent.
Claim 8
Dependent Claim
19 words
A coating composition according to Claim 6 wherein the conductive polymer is poly(N-vinylbenzyl-N,N,N-trimethylammonium chloride-co-ethylene glycol dimethacrylate) (93/7 molar percent).
Claim 9
Dependent Claim
21 words
A coating composition according to Claim 6 wherein the crosslinkable latex is poly(n-lauryl methacrylate-co-2-chloroethyl methacrylate-co-glycidyl methacrylate) or poly(n-butyl methacrylate-co-styrene- co-glycidyl methacrylate).
Claim 10
Dependent Claim
15 words
An element comprising a support having coated thereon a coating composition according to Claim 1.
Claim 11
Dependent Claim
18 words
An element according to Claim 9 wherein the coated composition is overcoated with a layer of the latex.
Claim 12
Dependent Claim
11 words
An element according to Claim 9 which comprises a radiation-sensitive layer.
References Cited (Backward Citations)
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