Coating compositions containing highly structured macromolecules

US6432484B1 · kind B1 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Patrick Henry Corcoran · Cherry Hill, US
• Carl Brent Douglas · Boothwyn, US
• Eric Diaz Felton · Newark, US
• Josef Huybrechts · Turnhout, BE
• Gary Delmar Jaycox · West Chester, US
• Patricia Mary Ellen Sormani · Newark, US
• Marko Strukelj · Wilmington, US
• Lech Wilczek · Wilmington, US

Key dates

• Filing date: Jan 16, 2001
• Grant date: Aug 13, 2002
• Expiry date: Jan 16, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D201/005
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention is directed to a two-pack high solids low VOC ambient curable coating composition, which includes cross linking and binder components. The crosslinking component includes a polyamine, a polyketimine, or a combination thereof. The polyamine is provided on an average with at least two amine functionalities per polymer chain and the polyketimine is provided on an average with at least two ketimine functionalities per polymer chain. A reactive diluent in the binder component includes a macromolecule substantially free from acrylate functionalities and having at least two acetoacetate functionalities per the macromolecule. If desired, the coating composition includes a binder polymer. The coating composition of the invention is particularly suited in automotive refinish coatings.