| 摘要 |
The present invention is a rubber modified monovinylidene aromatic polymer having a bimodal particle size distribution comprising: a) rubber particles of a star or branched low viscosity rubber having a volume average particle size of from 0.1 to 1.5 mu , and a cellular or core shell morphology or mixture thereof, and b) rubber particles of a star or branched low viscosity rubber, linear diene rubber or block copolymer rubber having a volume average particle size of from 1.5 to 10 mu , and a cellular morphology, with the proviso that when the volume average particle size of the particles of a) is greater than 1 mu , the volume average particle size of the particles of b) is at least 2 mu , wherein the particles of a) are from 50 to 99 wt. percent of the total diene rubber content.
|
