Coating system

US10894886B2 · kind B2 · utility

Assignee

• ELEMENTIS SPECIALTIES, INC. · US

Inventors

• Rajni Gupta · Princeton, US
• Wouter Ijdo · Yardley, US
• Yanhui CHEN · Princeton, US
• Prashant Deshmukh · Plainsboro, US
• James A. Heck · Lawrence, US
• Wayne Hoyte · Sayreville, US
• Maurice Gray · Elmont, US

Key dates

• Filing date: Jun 13, 2018
• Grant date: Jan 19, 2021
• Expiry date: Jun 13, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/17
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A coating composition containing a crosslinkable coating composition. The coating system comprises: ingredient A that has at least two protons that can be activated to form a Michael carbanion donor; ingredient B that functions as a Michael acceptor having at least two ethylenically unsaturated functionalities each activated by an electron-withdrawing group; and a catalyst system. In one embodiment, the catalyst system comprises diethyl carbonate, quaternary ammonium hydroxide or quaternary ammonium alkoxide, ethanol and 4-6 wt. % water. In another embodiment, the catalyst system comprises carbon dioxide, quaternary ammonium hydroxide or quaternary ammonium alkoxide, ethanol and 2-4 wt. % water. In certain embodiments, the coating composition optionally further comprising ammonium carbamate (H2NR8R9+—OC═ONR8R9), wherein R8R9 are each independently selected from hydrogen, a linear or branched substituted or unsubstituted alkyl group having 1 to 22 carbon atoms; 1 to 8 carbon atoms; 1 to 3 carbon atoms.