Abstract: The use of alkali metal, alkaline earth metal, ammonium and substituted ammonium salts of alkyl and alkanol sulfonic acids as additives in pure metal and metal alloy sulfate electroplating baths has a number of unexpected benefits including wider useful current density range, improved appearance and in the case of tin improved oxidative stability. The metals and alloys include but are not limited to tin, nickel, copper, chromium, cadmium, iron, rhodium, ruthenium, iron/zinc and tin/zinc.
Type:
Grant
Filed:
March 19, 1999
Date of Patent:
June 26, 2001
Assignees:
Technic, Inc., Specialty Chemical Systems, Inc.
Inventors:
Hyman D. Gillman, Brenda Fernandes, Kazimierz Wikiel
Abstract: The use of alkali metal, alkaline earth metal, ammonium and substituted ammonium salts of alkyl and alkanol sulfonic acids as additives in pure metal and metal alloy halide electroplating baths has a number of unexpected benefits including wider useful current density range and improved appearance. The metals and metal alloys include but are not limited to tin, lead, copper, nickel, zinc, cadmium, tin/zinc, zinc/nickel and tin/nickel.
Type:
Grant
Filed:
March 19, 1999
Date of Patent:
June 19, 2001
Assignee:
Technic, Inc. and Specialty Chemical System, Inc.
Inventors:
Hyman D. Gillman, Brenda Fernandes, Kazimierz Wikiel
Abstract: The use of alkali metal, alkaline earth metal, ammonium and substituted ammonium salts of alkyl and alkanol sulfonic acids as additives in pure metal and metal alloy sulfonic acid electroplating baths has a number of unexpected benefits including wider useful current density range, improved appearance and in the case of tin improved oxidative stability. An additional significant appearance is to reduce the overall costs of this type of bath with the more economical salts of alkyl and alkanol sulfonic acids. The metals and metal alloys include but are not limited to tin, lead, copper, nickel, zinc, tin/lead, tin/lead/copper, tin/zinc and zinc/nickel.
Type:
Grant
Filed:
March 19, 1999
Date of Patent:
February 6, 2001
Assignees:
Technic, Inc., Specialty Chemical Systems, Inc.
Inventors:
Hyman D. Gillman, Brenda Fernandes, Kazimierz Wikiel
Abstract: The use of alkali metal, alkaline earth metal, ammonium and substituted ammonium salts of alkyl and alkanol sulfonic acids as additives in pure metal and metal alloy fluoroborate electroplating baths has a number of unexpected benefits including wider useful current density range and improved appearance. The metals and metal alloys include but are not limited to tin, lead, copper, cadmium, indium, iron, tin/lead and tin/lead copper.
Type:
Grant
Filed:
March 19, 1999
Date of Patent:
January 30, 2001
Assignees:
Technic, Inc., Specialty Chemical Systems, Inc.
Inventors:
Hyman D. Gillman, Brenda Fernandes, Kazimierz Wikiel