Repair film and use thereof

US8337649B2 · kind B2 · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Hubert Baumgart · Hachenburg, DE
• Berthold Austrup · Selm, DE
• Bostjan Muhic · Ljubljana, SI

Key dates

• Filing date: Nov 9, 2006
• Grant date: Dec 25, 2012
• Expiry date: Apr 15, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31938
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Disclosed herein is a refinish sheet produced by (1) coating one side of a temporary carrier sheet (A) with at least one aqueous coating material (B) comprising at least one free-radically crosslinkable binder (B1) having a glass transition temperature of −70 to +50° C., an olefinically unsaturated double bond content of 2 to 10 eq/kg, and an acid group content of 0.05 to 15 eq/kg to produce at least one resultant layer (B); and (2) drying but not curing, or only part-curing, the at least one resultant layer (B) to produce at least one dried, uncured or part-cured layer (B). Also disclosed is a method of repairing a surface of a coated substrate using the refinish sheet.