Internally stabilized vinylidene chloride resin in autodeposition

US5912297A · kind A · utility

Assignee

• Henkel Limited

Inventors

• Wilbur S. Hall · Conshohocken, US
• Herbert Fischer · Goldkronach, DE
• Roland Morlock · Bergheim, DE

Key dates

• Filing date: Jun 6, 1995
• Grant date: Jun 15, 1999
• Expiry date: Jun 6, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D5/088
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Improved autodeposited coatings on metallic surfaces are formed by contacting the metallic surfaces with an autodepositing composition comprising an acidic aqueous coating solution containing dispersed solid resin particles of either an internally stablilized or externally stabilized vinylidene chloride polymer, an exemplary internally stabilized polymer being prepared from vinylidene chloride and a monomeric surfactant which includes an inorganic ionizable group, and an exemplary externally stabilized polymer being prepared from vinylidene chloride and a reactive comonomer, the resulting resin particles having surfactant adsorbed thereon, said autodeposited coatings having extremely good corrosion resistant properties without treatment with a reaction rinse such as a chromium rinse.