Coated inorganic materials

• US 4,937,060 A
• Filed: 07/08/1988
• Issued: 06/26/1990
• Est. Priority Date: 07/23/1987
• Status: Expired due to Fees

• Current Assignee: Glcc Technologies, Inc.
• Original Assignee: Cookson Group PLC (Vesuvius Plc)
• Inventors: Shah, Dilip, Adams, Philip N., Marsh, Andrew M., Kathirgamanathan, Poopathy
• Primary Examiner(s): VAN BALEN, WILLIAM
• Application Number:
  US07/216,296
• Time in Patent Office: 718 Days
• Field of Search: 428/403, 428/407
• US Class Current: 428/403
• CPC Class Codes: C08G 61/123 derived from five-membered heterocyclic compounds
• CPC Class Codes: C08K 9/08 Ingredients agglomerated by treatment with a binding agent
• CPC Class Codes: C09D 179/02 Polyamines
• CPC Class Codes: H01B 1/122 Ionic conductors
• CPC Class Codes: H01B 1/127 comprising five-membered aromatic rings in the main chain, e.g. polypyrroles, polythiophenes
• CPC Class Codes: H01B 1/128 comprising six-membered aromatic rings in the main chain, e.g. polyanilines, polyphenylenes
• CPC Class Codes: Y10T 428/2991 Coated
• CPC Class Codes: Y10T 428/2998 including synthetic resin or polymer

Abstract

An inorganic powdery or granular material which is coated with a coating of an inherently conductive polymeric material, such as a conductive polypyrrole or substituted polypyrrole, a polythiophene or substituted polythiophene, a polyaniline or substituted polyaniline, a polyethylene oxide or an aniline copolymer. The material which is coated is talc, mica, wollastonite, calcium carbonate, aluminium hydroxide, clay or hydroxyapatite.

Claims

1. An inorganic powdery or granular material which is coated with a coating of an inherently conductive polymeric material.

2. An inorganic powdery or granular material according to claim 1 which is coated with a conductive polymeric material selected from the group consisting of a polypyrrole, a substituted polypyrrole, a polythiophene, a substituted polythiophene, a polyaniline, a substituted polyaniline, a polyethylene oxide and an aniline copolymer.

3. An inorganic powdery or granular material according to in claim 1 wherein the material which is coated is selected from the group consisting of talc, mica, wollastonite, calcium carbonate, aluminium hydroxide, clay and hydroxyapatite.

4. An inorganic powdery or granular material according to claim 1 wherein the inorganic powdery or granular material has an average diameter or average length in the range of from 0.1 to 500 micrometers, prior to coating with the conductive polymeric material.

5. An inorganic powdery or granular material according to claim 1 which is coated with a combination of coatings, at least one of which is an inherently conductive polymeric material.