Fire retardant polymer compositions

a non-halogenated polymer such as polystyrene, polyesters, polymono-olefins or ABS resins is made fire retardant by a low loading combination of a halogenated hydrocarbon fire retardant, zinc borate and a metal soap. The halogenated hydrocarbon preferably contains bromine or a combination thereof with chlorine. Suitable zinc borates are the hydrated zinc borates well known in the art. Metal soaps are preferably those of the metals calcium, zinc, aluminum, barium, cadmium and combinations thereof.Both synergistic fire retardancy and lower smoke emission are exhibited as compared to compositions excluding the metal soap.

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Description
Patent History
Patent number: T977004
Type: Grant
Filed: Mar 20, 1978
Date of Patent: Dec 5, 1978
Assignee: United States Borax & Chemical Corporation (Los Angeles, CA)
Inventors: Joseph Dulat (Fetcham), Leonard T. Arthur (Tolworth)
Application Number: 5/888,061
Classifications
Current U.S. Class: 260/23S; 260/4575W; 260/23H; 260/457RT; 260/22XA
International Classification: C08K 509;