Macdermid, Incorporated

Harold Leever

John J Grunwald

Bryan Whitmore

Leo J Slominski

Chipping, flaking, and cracking of mechanical galvanizing coatings applied on metal substrates is prevented by interposing between successive layers of plating metal, which are used in galvanizing the metal substrate, a layer of cushioning metal. Each interposed layer of cushioning metal imparts malleability to the coating such that chipping, cracking, and flaking is prevented or substantially reduced. The plating metal is preferably zinc, while the cushioning metal is preferably tin, lead, or mixtures thereof.

Mechanical galvanizing coating resistant to chipping, flaking and

Mechanical galvanizing coating resistant to chipping, flaking and,

An electroless nickel plating method and composition is disclosed wherein a soluble acetylenic compound is included within the plating bath in small amounts effective to improve the specularity of the nickel deposit without substantially decreasing the electroless plating rate of the bath. The method and compositions of the invention are useful in producing mirror-bright electroless nickel coatings free of haze.

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Bethlehem, CT, United States of America

Harold Leever