| 摘要 |
<p>08-12-0376 APPLICATION FOR LETTERS PATENT FOR AN IMPROVED METHOD FOR PREPARING ABS TYPE RESIN This invention relates to an improved process for preparing ABS resins wherein a alkadiene rubber is grafted in aqueous emulsion with styrene and nitrile type monomers, forming a grafted rubber, extracting said grafted rubber into a monomer phase and separating said monomergrafted rubber phase from said aqueous phase rollowed by mass polymerizing said grafted rubber-monomer phase to form an ABS polyblend, wherein the improvement comprises, carrying out the mass polymerization of said monomers in the presence of sufficient carbon dioxide to provide an ABS resin having a substantially white color.</p> |
