| 摘要 |
A free-flowing silicone rubber powder, having an average particle size of 1 to 1000 microns and prepared by mixing a polydiorganosiloxane with a silica filler, is uniformly dispersed in a poly(phenylene ether) resin using conventional equipment, such as a single screw or, preferably, a twin screw extruder. When employed at relatively low concentrations, such as about 0.2 to 3 parts by weight of powder per 100 parts by weight of resin, a significant improvement in the processability of the resin is obtained, while modification at higher levels, such as 5 to 20 parts by weight of powder per 100 parts by weight of the resin, results in a resin composition having greatly augmented impact resistance.
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