Method for the preparation of a poly (arylene ether)-polyolefin composition, and composition prepared thereby
OwnerAdeyinka Adedeji, Thomas Hartleinventors
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Abstract
A poly(arylene ether)-polyolefin composition is prepared by melt-blending a poly(arylene ether) and a compatibilizer to form a first blend, and melt-blending the first blend and a polyolefin to form a second blend. The composition lacks an unhydrogenated block copolymer, a poly(alkenyl aromatic) resin, or both. Multiple mixing elements, low throughput, and high extruder rotations per minute may be used to achieve high energy mixing of the first and second blends. Compositions prepared by the method exhibit an improved balance of impact strength, stiffness, and heat resistance, as well as reduced variability of physical properties.
Claims28
A method of preparing a thermoplastic composition, comprising:
- melt-blending
- about 10 to about 70 weight percent of a poly(arylene ether), and
- about 0.5 to about 30 weight percent of a compatibilizer
- to form a first intimate blend;
- and
- melt-blending
- the first intimate blend, and
- about 10 to about 80 weight percent of a polyolefin
- to form a second intimate blend;
- wherein the thermoplastic composition is substantially free of at least one component selected from (a) an unhydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene, and (b) a poly(alkenyl aromatic) resin;
- and
- wherein all weight percents are based on the total weight of the composition.
A method of preparing a thermoplastic composition, comprising:
- melt blending
- a poly(arylene ether) and
- a compatibilizer
- to form a first intimate blend;
- and
- melt blending
- the first intimate blend and
- a polyolefin
- to form a thermoplastic composition consisting essentially of the poly(arylene ether), the compatibilizer, and the polyolefin.
Dependencies are inferred from the claim text.