| 摘要 |
The present invention is directed to a rigid, lightweight filled resin foam having voids dispersed in a continuous phase which is formed from a polyester hybrid resi n having reinforcing particles dispersed therein. The hybrid resin forms a complex cross-linked n etwork (20) which may interact with other polymer networks in the continuous phase either by c ross-linking or by forming an interpenetrating polymer network. The present invention is als o directed to a process for preparing the above rigid, lightweight resin foam, and to a comp osition for use in this process. The foam of the present invention is useful in building materi als and the like requiring high tensile and compressive strength and corrosion and thermal re sistance. |
