| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject resin having low environmental load without generating any harmful gas at the burning by using a graft copolymer obtained by graft polymerizing a vinyl-based monomer in the presence of a polyorganosiloxane-based particle having a specific rang of average particle diameter. SOLUTION: This fire-resistant resin is composed of a polyorganosiloxane- based graft copolymer obtained by graft polymerizing (B) a vinyl-based monomer (e.g. an aromatic vinyl-based monomer, a vinyl cyanide-based monomer, a halogenated vinyl-based monomer, a (meth)acrylate-based monomer, a carboxylic group-containing vinyl-based monomer, or the like) in the presence of (A) a polyorganosiloxane-based particle having 0.008-0.2μm, preferably 0.01-0.1μm average particle diameter (e.g. the one obtained by polymerizing a polyorganosiloxane-forming component comprising organosiloxane and/or a bifunctional or more than trifunctional silane compound, or the like), and preferably is composed of 5-99 pts.wt. of the component A and 95-1 pts.wt. of the component B.
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