Bright nickel plating bath and process
Abstract
Abstract A NOVEL CLASS OF BRIGHTENING ADDITION AGENTS IS DISCLOSED FOR THE ELECTRODEPOSITION OF NICKEL FROM MODIFIED WATTS TYPE ACID NICKEL PLATING BATHS. THE NOVEL CLASS OF ADDIDITION AGENTS CONSISTS OF SYMMETRICAL HYDROXY SULFONIC LOWER ALKANOXY ACETYLENIC DERIVATIVES PRODUCED EITHER BY THE BORON TRIFLUORIDE OR SIMILAR LEWIS ACID CATALYZED REACTION OF HALOGENATED PROPYLENE AND BUTYLENE OXIDES WITH SYMMETRICAL ACETYLENIC DIOLS HAVING 4, 6, OR 8 CARBON ATOMS, OR BY FIRST REACTING THE DIOLS WITH ETHYLENE, PROPYLENE OR BUTYLENE OXIDES AND THEN WITH EPICHLOROHYDRIN. IN EITHER CASE, THE RESULTING BRIGHTENING AGENTS ARE CHARACTERIZED BY ATTACHEMENT TO ADJACENT CARBON ATOMS OF THE ALKANOXY GROUP OF SULFONIC AND AN HYDROXYL RADICAL. PLATING BATH SOLUTIONS INCORPORATING THE NOVEL ADDITION AGENTS, AND PLATING PROCESSES EMPLOYING SUCH SOLUTIONS ARE ALSO ENCLOSED.
Inventors
- 👤 Sidney C Beach
- 👤 Bernard P Martin
Bibliographic Details
Claims Analysis
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