Flame retardant composition for thermoplastic polymers consisting of porous, amorphous glass powder and melamine cyanurate

摘要

A flame retardant composition for thermoplastic molding materials, and also moldings, fibers or films that can be prepared from the flame retardant molding materials. The composition includes 30 to 70% by weight of melamine cyanurate and of 30 to 70% by weight of porous amorphous glass particles. The composition is prepared from foam glass produced continuously in a high-temperature extruder. The sum of the components is 100% by weight.

主权项

1. A flame protection agent for thermoplastic molding material, the flame protection agent comprising:
a component of 30 to 70% by weight of amorphous, porous borosilicate glass particles made of foam glass with an average particle size of 1 to 100 μm, the amorphous, porous borosilicate glass particles having the characteristics of having been produced in a high-temperature extruder and subsequently milled and classified; and a component of 30 to 70% by weight of melamine cyanurate, said melamine cyanurate optionally also being in the form of equimolar quantities of melamine and cyanuric acid or isocyanuric acid; and wherein a sum of said components totals 100% by weight.