Ethylenically unsaturated oligomers

US9394244B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Eugene Sitzmann · Wyandotte, US
• David L. Trumbo · Waukesha, US
• Mervin Wood · Riverview, US

Key dates

• Filing date: Oct 22, 2013
• Grant date: Jul 19, 2016
• Expiry date: Oct 22, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D135/02
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed are functional polyallophanate oligomers comprising ethylenically unsaturated groups and polymer stabilizer groups selected from hindered amine light stabilizers, ultraviolet light absorbers, antioxidants and dihydrocarbylhydroxylamines. The ethylenically unsaturated groups and the polymer stabilizer groups are bound to the polyallophanate oligomers through allophanate and/or carbamate groups. The polyallophanate oligomers are useful in curable coatings, inks and varnishes. The present polyallophanate oligomers are derived from a) organic polyisocyanates, b) compounds containing at least one isocyanate reactive group and at least one ethylenically unsaturated group and c) polymer stabilizers containing at least one isocyanate reactive group.