Extruded Polymer Foams Containing Brominated Fatty Acid-Based Flame Retardant Additives
AssigneeDow Global Technologies LLC
InventorsWilliam J. Kruper, JR., David R. Arrowsmith, Duane R. Romer, Bruce M. Bell, William G. Stobby, Inken Beulich, Zenon Lysenko, John Gordon-Duffy, Chau V. Vo
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Abstract
Extruded polymer foams are prepared using brominated fatty acids, an ester, amide or ester-amide of a brominated fatty acid, a glyceride of one or more brominated fatty acids, or a polymerized brominated fatty acid as an FR additive. The brominated FR additives unexpectedly are stable at the extrusion temperatures, and provide excellent flame retardancy to the foams.
Claims26
A process comprising forming a pressurized molten mixture of (A) a combustible polymer, (B) a flame retarding amount of at least one brominated fatty acid, an ester, amide or ester-amide of a brominated fatty acid, a glyceride of one or more brominated fatty acids, a polymerized brominated fatty acid, or a mixture of any two or more of the foregoing, and (C) a blowing agent, and then extruding the mixture into a region of reduced pressure such that the mixture expands and cools to form an expanded polymer containing component (B).
An extruded combustible polymer foam containing a flame retarding amount of a brominated fatty acid, an ester, amide or ester-amide of a brominated fatty acid, a glyceride of one or more brominated fatty acids, a polymerized brominated fatty acid, or a mixture of any two or more of the foregoing, and a melt flow promoter.
An extruded combustible polymer molded article, the extruded combustible polymer molded article containing a flame retarding amount of a brominated fatty acid, an ester, amide or ester-amide of a brominated fatty acid, or a glyceride of one or more brominated fatty acids, a polymerized brominated fatty acid, or a mixture of any two or more of the foregoing.
Dependencies are inferred from the claim text.