| 摘要 |
<p>The present invention is directed to a rigid or semirigid, filled resin material having a continuous phase which is a matrix containing a complex cross-linked network having an unsaturated polyester-polyurethane containing resin having fine multisize reinforcing particles and dispersed filler particles dispersed therein. The polyester-polyurethane network of the complex cross-linked network may interact with other polymer networks in the continuous phase either by cross-linking or by forming an interpenetrating polymer network. The complex cross-linked network immobilizes the fine multisize reinforcing particles and reacts with at least a surface layer of the dispersed filler particles. The present invention is also directed to a process for preparing the above rigid or semirigid, lightweight resin material, and to a composition for use in this process. The material of the present invention is useful in a variety of applications, and can be easily varied and modified to include a wide variety of fine multisize reinforcing particles and dispersed filler particles, and to function in a wide variety of uses.</p> |
