Flame retarded polyamides
AssigneeAtochem
InventorsGenevieve Morival, Catherine Hervy
Life of this patent
Estimating the term…
Abstract
Flame retarded polyamides and methods for their preparation, the polyamides being obtained by anionic polymerization of lactams or by the hydrolytic polycondensation of monomers in the presence of chain terminators, the flame resistance being conferred by incorporating into the molten polyamide a mixture of melamine cyanurate and a polyol having at least four hydroxy groups.
Claims14
Flame retarded polyamides with reduced dripping properties comprising a polyamide and an amount of (1) melamine cyanurate and (2) a polyol having at least four hydroxy groups, dispersed in the polyamide to retard combustion in the polyamide.
A method of improving the flame retardancy and drip resistance of polyamides which comprises adding to at least one polyamide an amount of a mixture of melamine cyanurate and a polyol having at least four hydroxy groups sufficient to reduce the combustibility of the polyamide.
Dependencies are inferred from the claim text.