| 摘要 |
A core/shell polymer comprises a rubbery core of crosslinked, conjugated diolefin polymer or copolymer with 0 or upto 50%, based on the total core weight, of a first vinyl monomer copolymerized with the diolefin, and one or more polymer shells, at least one of which shells is a vinylaromatic polymer or copolymer, the particles further having an average particle diameter no more than 250 nanometers and toluene swell index of from 13 to 45, preferably from 15 to 25. The core/shell polymers are useful for modifying the properties of olefinic, aromatic addition and/or condensation resins, particularly poly(styrene). |
