U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"We are probably nearing the limit of all we can know about astronomy."

Simon Newcomb, astronomer ; 1888

Newsletter  PatentStorm News

Make the Most of PatentStorm

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest patents by subscribing to an RSS feed.

Got questions? Ask a Patent Expert!

Registered users: Manage your profile, comments and alerts.

 

US Patent 5824371 - Corrosion resistant metal article coated with emeraldine base polyaniline

US Patent Issued on October 20, 1998
Estimated Patent Expiration Date: Icon_subject October 20, 2015Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
loading...


View Patent Images (PDF)
(Registered users only)

Abstract

The present invention relates to a corrosion resistant metal article which comprises: (a) a metal body normally prone to corrosion when subjected to potentially corrosive conditions; and (b) a coating of neutral, undoped polyaniline in the emeraldine base form on a portion of the metal body (e.g., a side coating or undercoating) of the neutral, undoped polyaniline in the emeraldine base form on the metal body, where the distance (for example, not more than about one centimeter) between coated and uncoated portions of the metal is effective to protect the uncoated portion of the metal as well as the coated portion.

Other References

  • Ahmad et al., "Inhibition of Corrosions of Steels by Conducting Polymers", Session FF10, Bulletin of the American Physical Society, vol. 32, No. 3, Mar. 1987, p. 548
  • G. Mengoli et al., "Anodic Synthesis of Polyaniline Coatings onto Fe Sheets", Journal of Applied Polymer Science, vol. 26, 4247-4257 (1981)
  • N. Ahmad et al., "Inhibition of Corrosion of Steels by Conducting Polymers", Session FF10, Bulletin of the American Physical Society, vol. 32, No. 3, Mar., 1987, p. 548
  • A.G. MacDiarmid et al., "Synthetic Metals: A Novel Role for Organic Polymers", Techincal Report No.: 1911-5, Office of Naval Research, Apr. 3, 1991
  • D.W. DeBerry, "Modification of the Electrochemical and Corrosion Behavior of Stainless Steel with an Electroactive Coating", Journal of the Electrochemical Society: Electrochemical Science and Technology, May 1985, vol. 132, pp. 1022-1026
  • G. Troch-Nagels et al., "Electron Conducting Orgnaic Coating of Mild Steel by Electropolymerization", Journal of Applied Electrochemistry 22 (1992) 756-764
  • D.A. Wrobleski et al., "Corrosion Resistant Coatings from Conducting Polymers", Polymer Preprints, vol. 35, No. 1, Mar. 1994, pp. 265-266
  • B. Wessling, "Passivation of Metals by Coating with Polyaniline: Corrosion Potential Shift and Morphological Changes", Advanced Materials, Communications, vol. 6, No. 3, pp. 226-228 (1994

Inventors

Assignee

Application

No. 383346 filed on 02/03/1995

US Classes:

427/388.1, Metal base427/388.2, Cross-linked or infusible coating428/457Of metal

Field of Search

428/457, Of metal427/388.1, Metal base427/388.2Cross-linked or infusible coating

Examiners

Primary: Cain, Edward J.

Attorney, Agent or Firm

US Patent References

5441772Protecting carbon steel from corrosion with nonconducting poly(aniline)
Issued on: 08/15/1995
Inventor: McAndrew, et al.

Foreign Patent References

  • 1321042 CA 09/09/1988
  • 2000431 CA. 04/09/1990
  • WO93/14166 WO 07/09/1993

International Class

B05D 007/14

Comments

No comments for this page
 
 
Forgot password?
Register here