Patent ID: 6906134
Filing Date: 2005-06-14
Classification: C08F,C08L

Abstract:
1. A process for preparing an ABS graft copolymer comprising the steps of introducing to a) 40 to 80 weight parts of rubber latex comprising b) 20 to 60 weight parts of a monomer mixture of two or more kinds selected from a group consisting of aromatic vinyl compounds and vinyl cyanide compounds to prepare a graft copolymer, wherein 5 to 30 wt % of the monomer mixture is introduced in a batch, and simultaneously 70 to 95 wt % of the monomer mixture is started to be continuously introduced in an emulsified state, and introducing a water-soluble polymerization initiator in the batch-introduction of the monomer mixture; and introducing a liposoluble polymerization initiator in the continuous introduction of the monomer mixture in the emulsified state.