Electrically conductive compositions

• US 4,478,922 A
• Filed: 11/21/1983
• Issued: 10/23/1984
• Est. Priority Date: 01/21/1982
• Status: Expired due to Fees

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Haley, Neil F., Perlstein, Jerome H.
• Primary Examiner(s): Kittle, John E.
• Assistant Examiner(s): Goodrow, John L.
• Application Number:
  US06/553,931
• Time in Patent Office: 337 Days
• Field of Search: 430/58, 430/62, 430/529, 430/922
• US Class Current: 430/58.15
• CPC Class Codes: C09K 3/16 Anti-static materials
• CPC Class Codes: G03C 1/85 characterised by antistatic additives or coatings
• CPC Class Codes: G03G 5/10 Bases for charge-receiving or other layers
• CPC Class Codes: H01B 1/121 Charge-transfer complexes
• CPC Class Codes: Y10S 430/123 Sulfur in heterocyclic ring

Abstract

Compositions comprising a polymer and dendrite crystals of a salt consisting of the cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiole-2-ylidene)-4,5-dihydronaphtho [1,2-d]-1,3-dithiole and an anion are useful in forming conductive coatings.

Claims

1. An electrographic element having a conductive layer comprising an electrically insulating polymer and a charge transfer complex characterized in that the charge transfer complex is (a) in the form of dendrite crystals throughout the polymer and (b) is a salt consisting of a cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiol-2-ylidene)-4,5-dihydronaphtho[1,2-d]-1,3-dithiole and an anion selected from the group consisting of 7,7,8,8-tetracyanoquinodimethane, ClO₄^-, BF₄^-, PF₆^-, F^-, Cl^-, I^-, and I₃^-.

4. An element as in claims 1, 2 or 3 in which the anion is selected from the group consisting of 7,7,8,8^- tetracyanoquinodimethane and ClO₄^-.

5. An element as in claims 1, 2 or 3 in which the electrically insulating polymer is selected from the group consisting of polycarbonates, polyesters and polysulfones.

6. An element is in claims 1, 2 or 3 in which the electrically insulating polymer is selected from the group consisting of poly(4,4'"'"'-isopropylidenediphenylene carbonate), poly(oxy-1,4-phenylenesulfonyl-1,4-phenyleneoxy-1,4-phenyleneisopropylidene-1,4-phenylene), poly[ethylene-co-isopropylidenebis-(1,4-phenyleneoxy-ethylene)-terephthalate], poly(vinyl butyral), and poly(n-butylmethacrylate-co-p-styrenesulfonic acid potassium salt).

2. A photographic element having an antistatic layer comprising an electrically insulating polymer and a charge transfer complex characterized in that the charge transfer complex is (a) in the form of dendrite crystals throughout the polymer and (b) is a salt consisting of a cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiol-2-ylidene)-4,5-dihydronaphtho[1,2-d]-1,3-dithiole and an anion selected from the group consisting of 7,7,8,8^- tetracyanoquinodimethane, ClO₄^-, BF₄^-, PF₆^-, F^-, Cl^-, I^-, and I₃^-.

3. An electrophotographic element having a conductive layer comprising an electrically insulating polymer and a charge transfer complex characterized in that the charge transfer complex is (a) in the form dendrite crystals throughout the polymer and (b) is a salt consisting of a cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiol-2-ylidene)-4,5-dihydronaphtho[1,2-d]-1,3-dithiole and an anion selected from the group consisting of 7,7,8,8^- tetracyanoquinodimethane, ClO₄^-, BF₄^-, PF₆^-, F^-, Cl^-, I^-, and I₃^-.