LOWLY SMOKING AND LOWLY TOXIC FLAME-RETARDANT POLYOLEFIN COMPOUND

摘要

PURPOSE: To obtain a lowly smoking and lowly toxic polyolefin compound suitable for, e.g. a wire coating material and an electrical part material, improved in mechanical characteristics and having ensured flame retardancy by reducing the amount of a flame-retardant material, especially a hydroxide, added to a halogen-free polyolefin resin material to a possible extent where it is less than the conventional amounts. ;CONSTITUTION: This compound is obtained by adding 80-130 pts.wt. flame retardant comprising a mixture of 100 pts.wt. composite metal hydroxide represented by the formula, Mg_1-xM⁺²_x(OH)₂ and 1-15 pts.wt. fine carbonaceous material powder to 100 pts.wt. polyolefin resin. In the formula, M⁺² stands for at least one kind of divalent metal ion selected from the group consisting of Mn⁺², Fe⁺², Co⁺², Ni⁺², Cu⁺² and Zn⁺²; and x is a number satisfying the relation of the formula, 0.001≤x≤0.9.;COPYRIGHT: (C)1996,JPO