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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8900670 B1

PDFFull Text
Expired
Date of Patent:
Dec. 02, 2014

Filed:

May. 23, 2008

Anti-corrosive hybrid sol-gel film on metallic substrates and method of producing the same

Applicants:

Arun Kumar Singh, Jamshedpur, IN;

Tapan K. Rout, Jamshedpur, IN;

Ramanuj Narayan, Jamshedpur, IN;

Anil K. Verma, Jamshedpur, IN;

Nikhiles Bandyopadhyay, Jamshedpur, IN;

Nitu Rani, Jamshedpur, IN;

Inventors:

Arun Kumar Singh, Jamshedpur, IN;

Tapan K. Rout, Jamshedpur, IN;

Ramanuj Narayan, Jamshedpur, IN;

Anil K. Verma, Jamshedpur, IN;

Nikhiles Bandyopadhyay, Jamshedpur, IN;

Nitu Rani, Jamshedpur, IN;

Assignee:

Tata Steel Limited, Jamshedpur, IN;

Attorneys:

Venable LLP

Jeffri A. Kaminski

Primary Examiner:

Robert S Walters, Jr

Int. Cl.
CPC ...
B05D 3/02 (2006.01); C09D 1/02 (2006.01); C23C 18/12 (2006.01); C23F 11/18 (2006.01); C23C 22/53 (2006.01); C09D 7/12 (2006.01); C23C 22/74 (2006.01); C09D 5/08 (2006.01); C08K 5/057 (2006.01); C08K 3/18 (2006.01);
U.S. Cl.
CPC ...
C23C 22/53 (2013.01); C09D 1/02 (2013.01); C23C 18/1241 (2013.01); C08K 5/057 (2013.01); C23F 11/185 (2013.01); C23C 18/1216 (2013.01); C23C 18/122 (2013.01); C23C 2222/20 (2013.01); C08K 3/18 (2013.01); C09D 7/1216 (2013.01); C23C 22/74 (2013.01); C23C 18/127 (2013.01); C23C 18/1254 (2013.01); C09D 5/084 (2013.01); C09D 7/1233 (2013.01); C23C 18/1212 (2013.01);
Abstract

This invention relates to a method of preparing anti-corrosive hybrid sol-gel film coating on zinc or zinc alloy coated metallic substrates comprising the steps of preparing a mixture of sol-gel from hydrolisable silicon alkoxides, sodium venadate solution combined with colloidal silica in a beaker and vigorously stirred; adding within 20 seconds of two separated phase formation between silica precursors and colloidal silica acetic acid or dilute nitric acid as a catalizer to initiate hydrolysis reaction of silicon alkoxides and condensation reaction in the sol gel composition, continuously stirring the mixture for about 24 hours to form a single phase solution, applying the solution on cleaned zinc or zinc alloy coated metal substrates to form a transparent sol-gel coating film and drying the coated substrates at 50° to 200° C. for 10 to 60 minutes.

Find Patent Forward Citations

Singh, Arun. (2014). Anti-corrosive hybrid sol-gel film on metallic substrates and method of producing the same (U.S. Patent No. 8900670). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8900670

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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