Flame retardant expandable poly(arylene ether)/polystyrene compositions and preparation thereof
AssigneeGeneral Electric Company
InventorsAdrie Landa, Jan Keulen
Life of this patent
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Abstract
A non-halogenated, fire retardant, expandable poly (arylene ether)/polystyrene blends is produced by the method comprising, in a first step, forming a fire retardant mixture comprising a non-halogenated fire retardant, poly(arylene ether) resin and polystyrene resin by intimately mixing in melt; and in a second step, forming the non-halogenated, fire retardant, expandable poly (arylene ether)/polystyrene blend by intimately mixing in melt the fire retardant mixture with a blowing agent.
Claims27
A non-halogenated, fire retardant, expandable poly (arylene ether)/polystyrene blend produced by the method comprising:
- in a first step, forming a fire retardant mixture comprising a non-halogenated fire retardant, poly(arylene ether) resin and polystyrene resin by intimately mixing in melt;
- and in a second step, forming the non-halogenated, fire retardant, expandable poly (arylene ether)/polystyrene blend by intimately mixing in melt the fire retardant mixture with a blowing agent.
A method of making a non-halogenated, fire retardant, expandable poly (arylene ether)/polystyrene blend comprising:
- in a first step, intimately mixing in melt a non-halogenated fire retardant, a poly(arylene ether) resin and a polystyrene resin to form a fire retardant mixture;
- and, in a second step, combining, in melt, the fire retardant mixture with a blowing agent.
A method of making an expandable poly(arylene ether)/polystyrene blend comprising:
- in a first step, intimately mixing in melt a resin mixture comprising a non-halogenated fire retardant, a poly(arylene ether) resin and a polystyrene resin, wherein the amount of poly(arylene ether) resin is greater than about 25 wt % based on the weight of the composition;
- and
- in a second step, combining, in melt, the resin mixture with a blowing agent.
A non-halogenated fire retardant, expandable poly(arylene ether)/polystyrene blend comprising:
- a non-halogenated fire retardant, a poly(arylene ether) resin, a polystyrene resin, and a blowing agent,
- wherein the blend, when expanded, has at least an HBF rating according to UL ASTM D 4986/ISO/DIS 9772.3 test for 6 mm or greater thickness bars.
Dependencies are inferred from the claim text.