Title:
TRI-CATION ZINC PHOSPHATE CONVERSION COATING AND PROCESS OF MAKING THE SAME
Document Type and Number:
WIPO Patent Application WO2002024973
Kind Code:
A3
Abstract:
Tri-cation zinc phosphate conversion coating compositions are disclosed. The compositions include a phosphate component, ions of nickel, manganese, and zinc, and a glycerophosphate component, such as disodium glycerophosphate. Coatings formed from these compositions provide improved corrosion resistance to metal substrates and provide a uniform layer for the application of paint finishes. Processes of making and using these compositions are also disclosed.
Inventors:
RODZEWICH EDWARD A
HABERLE BRUCE V
MURPHY JOSEPH E
HABERLE BRUCE V
MURPHY JOSEPH E
Application Number:
PCT/US2001/026803
Publication Date:
July 31, 2003
Filing Date:
August 28, 2001
Export Citation:
Assignee:
GE BETZ INC (US)
International Classes:
C23C22/18; C23C22/36; (IPC1-7): C23C22/18; C23C22/36
Foreign References:
| EP0403241A1 | 1990-12-19 | |||
| FR1344776A | 1963-11-29 | |||
| GB1570041A | 1980-06-25 | |||
| EP0084593A1 | 1983-08-03 | |||
| GB1510277A | 1978-05-10 | |||
| FR1555387A | 1969-01-24 | |||
| US4957568A | 1990-09-18 | |||
| US5238506A | 1993-08-24 |
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