| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a durable, resilient and colorfast golf ball cover, roll, wheel and tire, all obtained from a polyurethane elastomer. <P>SOLUTION: The polyurethane elastomer is prepared by using a polyurethane prepolymer prepared by reducing the amount of unreacted monomeric hexamethylene 1,6-diisocyanate (HDI) and by mixing the polyurethane prepolymer containing a reduced amount of unreacted monomeric HDI with an amine and/or a hydroxy chain extender. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
