| 摘要 |
PURPOSE:To obtain the titled composition moldable without causing the thermal decomposition of flame-retardant, generation of toxic gas and discoloration of the molding material, by adding specific amount of red phosphorus and melamine to an ABS resin containing p-methylstyrene unit. CONSTITUTION:100 pts.(wt.) of an ABS resin containing 5-60wt% p- methylstyrene unit is compounded with (A) 5-30 pts., preferably 10-20 pts. of fine particle of red phosphorus surface-treated with a thermosetting resin and (B) 5-30 pts., preferably 10-20 pts. of melamine. The ABS resin can be produced either by substituting one or more styrene monomer units in the polymer chain of an ABS resin with p-methylstyrene or by blending an ABS resin with a p-methylstyrene (co)polymer. |
