Elementis Specialties, Inc.

Elements Specialties, Inc.

Rajni Gupta

Wouter Ijdo

Yanhui Chen

James A Heck

Wayne Hoyte

Prashant Deshmukh

Maurice Gray

A crosslinkable coating composition comprising: 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 dormant carbamate initiator of Formula (1) wherein Rand Rcan be independently selected from hydrogen, a linear or branched substituted or unsubstituted alkyl group having 1 to 22 carbon atoms; 1 to 8 carbon atoms; and Ais a cationic species or polymer and n is an integer equal or greater than 1 with the proviso that Ais not an acidic hydrogen; and optionally further comprising ammonium carbamate (HNRROC&#x2550;ONRR). The crosslinkable coating composition can be used for a variety of coating applications including nail coating compositions.

Crosslinkable coating compositions formulated with dormant carbamate initiator

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 (HNRR+&#x2014;OC&#x2550;ONRR), wherein RRare 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.

Coating system

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Princeton, NJ, United States of America

Rajni Gupta