Transparent, flame retardant poly(arylene ether) blends
OwnerAdeyinka Adedeji, Mark Vendoninventors
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Abstract
A transparent, flame retardant poly(arylene ether) blend comprises a poly(arylene ether) resin, rubber-modified poly(styrene), optional impact modifier, optional poly (styrene), and an organic phosphate flame retardant or a mixture of organic phosphate flame retardants. Use of the organic phosphate flame retardants was unexpectedly found to provide flame retardance without affecting the transparency of objects molded from the blend.
Claims26
A poly(arylene ether) blend comprising, based on 100 wt. % of the total blend:
- about 10 to about 90 wt. % of a poly(arylene ether) resin;
- about 5 to about 50 wt. % of a rubber-modified poly(styrene) resin that is a tapered block copolymer;
- and
- about 2 to about 35 wt. % of an organic phosphate flame retardant;
- wherein the blend has a percent transmittance after molding of at least about 35% measured at ⅛ inch thickness.
A transparent poly(arylene ether) blend comprising, based on 100 wt. % of the total blend:
- about 10 to about 70 wt. % of a poly(arylene ether) resin;
- about 10 to about 40 wt. % of a rubber-modified poly(styrene) resin that is a tapered block copolymer;
- about 10 to about 70 wt. % of a poly(styrene) resin;
- about 0 to about 10 wt. % of an impact modifier;
- and
- about 5 to about 30 wt. % of an organic phosphate flame retardant;
- wherein the blend has a percent transmittance after molding of at least about 35% measured at ⅛ inch thickness.
A transparent poly(arylene ether) blend comprising, based on 100 wt. % of the total blend:
- about 30 to about 60 wt. % of a poly(arylene ether) resin;
- about 15 to about 35 wt. % of a rubber-modified poly(styrene) resin that is a tapered block copolymer;
- about 20 to about 50 wt. % of a poly(styrene) resin;
- about 0 to about 5 wt. % of a impact modifier;
- and
- about 10 to about 25 wt. % of an organic phosphate flame retardant;
- wherein the blend has a percent transmittance after molding of at least about 35% measured at ⅛ inch thickness.
Dependencies are inferred from the claim text.