| 摘要 |
<p>A shelf-stable urethane-type polymer producing coating powder composition is presented comprised of a cyclic nitrile compound and, optionally, a reactive hydrogencontaining 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 composition 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.</p> |
