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公开(公告)号：US3634262A
公开(公告)日：1972-01-11
申请号：US3634262D
申请日：1970-05-13
Applicant: MACDERMID INC
Inventor： GRUNWALD JOHN J , HORNER EDMUND E
CPC classification number: C23C22/36 , C11D3/3942 , C11D7/02 , C11D7/06 , C23G1/125
Abstract: ALUMINUM AND ALUMINUM ALLOY SURFACES ARE PREPARED FOR METAL FINISHING OPERATIONS SUCH AS ANODIZING, PAINTING, BRIGHT DIPPING ETC., BY IMMERSING THEM FOR ABOUT 1 TO ABOUT 10 MINUTES AT A TEMPERATURE OF ABOUT 60* TO ABOUT 170*F. IN AND ACIDIC SOLUTION OF A PEROXYDIPHOSPHATE COMPOUND, SUCH AS POTASSIUM PEROXYDIPHOSPHATE. OPTIONALLY, THE SOLUTION MAY ALSO CONTAIN A FLUORIDE SALT.
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