Urethane coating powder compositions

Details Urethane coating powder compositions Urethane coating powder compositions

C - Chemistry, Metallurgy

07

D

402/128, 260/244

C07D 273/00 (2006.01) C07D 291/04 (2006.01) C08G 18/70 (2006.01) C09D 5/03 (2006.01)

Patent

CA 1045143

ABSTRACT OF THE DISCLOSURE A shelf-stable urethane-type polymer producing coating powder composition is presented comprised of a cyclic nitrile compound and, optionally, a reactive hydrogen- containing compound selected from the class consisting of polyols and polythiols and a condensation-rearrangement catalyst. The preferred cyclic nitrile compounds are the cyclic nitrile carbonates, for example, adipodi(nitrile carbonate), and the preferred reactive hydrogen-containing compounds are hydroxyl-containing polymers, for example, cellulose acetate butyrate. The coating powder composi- tion may also be prepared from a prepolymer of the above compounds. The coating powder composition preferably has a particle size of about 50 to 250 microns.

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