PROCESS FOR PRODUCING FLAME-RETARDANT AND IMPACT-RESISTANT

摘要

adding and bulk-polymerising 5-10 wt.% of low cis type butadiene rubber having 150-300 cps of the solution viscosity, 0.1-5 wt.% of low cis type butadiene rubber having below than 50 cps of the solution viscosity within based styrene monomer and molecular controller and plasticizer, where the polymerization ratio is 30-40%, to prepare prepolymer which contains together the smaller rubber particle having 0.5-1.5 micron of particle size and the larger rubber particle having 3.0-5.0 micron of particle size; adding pure water and tricalcium phosphate, and suspending that; adding catalyst and second molecular controller then suspension polymerising that.