ANTHONY SALVADORE PETROLE
Medical Practice in Ashland, PA
License number
Pennsylvania MA057311
Category
Medicine
Type
Medical Physician Asst
Address
Address
Ashland, PA 17921
Professional information
Method For Treating Metal Surfaces Using A Silicate Solution And A Silane Solution
US Patent:
5700523, Dec 23, 1997
Filed:
Jun 3, 1996
Appl. No.:
8/657352
Inventors:
Anthony P. Petrole - Ashland PA
Jose B. Rivera - Philadelphia PA
Jose B. Rivera - Philadelphia PA
Assignee:
Bulk Chemicals, Inc. - Leesport PA
International Classification:
C23C 2234
US Classification:
4273978
Abstract:
A method for treating a metal surface involves contacting the metal surface with an aqueous silicate solution, contacting the silicate-coated metal surface with an aqueous organo-functional silane solution, and then contacting the silane-coated metal surface with a chrome-free pretreatment. Preferably, the bath containing the aqueous silicate solution also includes a cleaning agent for cleaning the metal surface. Alternatively, the metal surface may be cleaned in a separate step before the metal surface is contacted with the aqueous silicate solution and, optionally, the metal surface is rinsed with water after the metal surface is cleaned and before the metal surface is contacted with the aqueous silicate solution. The silicate-coated metal surface may be rinsed with water before it is contacted with an aqueous organo-functional silane solution. In addition, the silane-coated metal surface may be rinsed with water before it is contacted with a chrome-free pretreatment.