FLAME-RETARDING COMPOSITION

摘要

PURPOSE:To obtain a flame-retarding composition which is rendered nondripping and highly flame-retarding without detriment to good extrusion moldability and mechanical properties and does not produce noxious gases even when burnt by adding an inorganic flame retardant and a specified inorganic powder to a polyolefin. CONSTITUTION:A flame-retarding composition is obtained by adding 50-300 pts.wt. inorganic flame retardant (e.g. aluminum hydroxide) and 10-100 pts.wt. powder of an inorganic substance (e.g. lead monoxide) which is vitrified at 800 deg.C or below and has a mean particle diameter of 50mum or below. The flame- retarding composition obtained in this way is rendered nondripping and highly flame-retarding without detriment to good extrudability and mechanical properties and does not produce noxious halogen gases even when burnt.