Process for preparing polycarbamate and reaction product thereof

Abstract

A first process to produce polycarbamate comprising providing urea in liquid form; and adding the liquid urea to a polyol is provided. A second process for producing polycarbamate comprising adding solid urea to a polyol in liquid form to form a reaction mixture is provided. Also provided is a reaction product produced by the first process or second process.

1 . (canceled) 
     
     
         2 . (canceled) 
     
     
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         9 . (canceled) 
     
     
         10 . (canceled) 
     
     
         11 . A second process for producing polycarbamate comprising:
 adding solid urea to a polyol in liquid form to form a reaction mixture;   wherein the polyol is dissolved in a solvent; and   wherein the polyol is selected from the group consisting of acrylic, styrene-acrylic, styrene-butadiene, saturated polyester, polyalkylene polyols, urethane, alkyd, polyether and polycarbonate.   
     
     
         12 . The second process according to  claim 11 , wherein the temperature of the reaction mixture is above the melting point of urea. 
     
     
         13 . The second process according to  claim 11 , wherein the adding the solid urea to the polyol is conducted in a semi-batch manner. 
     
     
         14 . The second process according to  claim 12 , wherein the adding the solid urea to the polyol in liquid form is conducted in the presence of a catalyst. 
     
     
         15 . The second process according to  claim 11 , wherein the solid urea is added to the polyol in liquid form at a constant, pulsed, or variable rate of addition. 
     
     
         16 . (canceled) 
     
     
         17 . A reaction product produced by the second process according to  claim 11 .