Polyolefin composition with poly(phenylene ether) filler and article thereof

摘要

Polyolefin compositions having improved properties comprise oligomeric poly(phenylene ether) as an organic filler. The composition comprises specific amounts of polyolefin, oligomeric poly(phenylene ether), and optionally a compatibilizer. The polyolefin can be a polyethylene homopolymer, an ethylene-containing copolymer, a polypropylene homopolymer, a polypropylene-containing copolymer, or a combination thereof. The oligomeric poly(phenylene ether) can be monofunctional or bifunctional. The compositions can have increased flexural modulus, heat deformation resistance, and flame resistance, compared to compositions without the oligomeric poly(phenylene ether). A compatibilizer can partially restore elongation when high levels of oligomeric poly(phenylene ether) are present.

主权项

1. A composition comprising:
65 to 97.5 weight percent of a polyolefin; 2.5 to 25 weight percent of an oligomeric poly(phenylene ether) having an intrinsic viscosity of 0.01 to 0.12 deciliters per gram, as measured in chloroform at 25° C., and a weight average molecular weight of 1,200 to 8,000 atomic mass units, as measured by gel permeation chromatography; and 0 to 10 weight percent of a compatibilizer; wherein all weight percents are based on the combined weight of the polyolefin, the poly(phenylene ether), and the compatibilizer.