Granular polyurethane resin composition and molded article of the same

Abstract

Disclosed is a granular polyurethane resin composition containing a thermoplastic polyurethane resin which contains a hard segment obtained by a reaction between a polyisocyanate and a chain extender. The polyisocyanate contains isocyanate groups of 1,4-bis(isocyanatomethyl)cyclohexane in an amount of not less than 50% by more relative to the total mole number of isocyanate groups.

1 . A granular polyurethane resin composition comprising a thermoplastic polyurethane resin comprising
 a hard segment formed by a reaction between a polyisocyanate containing isocyanate groups of 1,4-bis(isocyanatomethyl)cyclohexane in a proportion of not less than 50% by mole relative to the total mole number of isocyanate groups, and   a chain extender.   
     
     
         2 . The granular polyurethane resin composition according to  claim 1 , having a solidification temperature, determined by a differential scanning calorimeter, of 0 to 140° C. 
     
     
         3 . The granular polyurethane resin composition according to  claim 1 , having a flow start temperature, determined by a flow tester, of 100 to 180° C. 
     
     
         4 . The granular polyurethane resin composition according to  claim 1 , further comprising a thermally crosslinkable monomer. 
     
     
         5 . The granular polyurethane resin composition according to  claim 4 , comprising a polymerization inhibitor in an amount of 0.1 to 6 parts by mass relative to 100 parts by mass of the thermally crosslinkable monomer. 
     
     
         6 . The granular polyurethane resin composition according to  claim 1 , wherein the thermoplastic polyurethane resin comprises a vinyl monomer-modified polyol obtained by a reaction between a high-molecular-weight polyol and a vinyl monomer. 
     
     
         7 . The granular polyurethane resin composition according to  claim 1 , being used for slush molding. 
     
     
         8 . A molded article obtained by slush molding a granular polyurethane resin composition comprising
 a thermoplastic polyurethane resin comprising
 a hard segment formed by a reaction between a polyisocyanate containing isocyanate groups of 1,4-bis(isocyanatomethyl)cyclohexane in a proportion of not less than 50% by mole relative to the total mole number of isocyanate groups, and 
 a chain extender. 
   
     
     
         9 . The molded article according to  claim 8 , being an automobile interior trim article.