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US 8,541,505 B2Granted
Poly(arylene ether) composition with improved melt flow and method for the preparation thereof
AssigneeSabic Innovative Plastics IP B.V.
InventorsHua Guo, Michael L. Todt, John Yates
Life of this patent
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Abstract
A thermoplastic composition is prepared by melt blending a poly(arylene ether) and an other resin, where the poly(arylene ether) has a particular molecular weight distribution. The thermoplastic composition exhibits significantly increased melt flow compared to compositions containing poly(arylene ether)s with similar intrinsic viscosities but different molecular weight distributions. The increased melt flow facilitates preparation of the thermoplastic composition and subsequent article fabrication procedures.
Claims29
A method of increasing the melt flow rate of a poly(arylene ether)-containing thermoplastic composition, comprising:
- melt blending
- a poly(arylene ether) characterized by a weight average molecular weight and a peak molecular weight, wherein a ratio of the weight average molecular weight to the peak molecular weight is about 1.3:1 to about 4:1;
- wherein the poly(arylene ether) is a poly(2,6-dimethyl-1,4-phenylene ether);
- and wherein the poly(2,6-dimethyl-1,4-phenylene ether), after it is blended with the other resin, has a weight average molecular weight of about 75,000 to about 95,000 atomic mass units, a peak molecular weight of about 40,000 to about 60,000 atomic mass unit, a ratio of the weight average molecular weight to the peak molecular weight is about 1.6:1 to about 2.3:1, and a bimodal molecular weight distribution comprising a second local maximum having a second molecular weight of about 200,000 to about 400,000 atomic mass units;
- and
- an other polymer consisting of one or more members selected from the group consisting of styrenic polymers, polyesters, polyolefins, and poly(phenylene sulfide)s
- to form a thermoplastic composition.
4 more elements
A thermoplastic composition, comprising:
- a poly(arylene ether) characterized by a weight average molecular weight and a peak molecular weight, wherein a ratio of the weight average molecular weight to the peak molecular weight is about 1.3:1 to about 4:1;
- wherein the poly(arylene ether) is a poly(2,6-dimethyl-1,4-phenylene ether);
- and wherein the poly(2,6-dimethyl-1,4-phenylene ether), before it is blended with the other resin, has a weight average molecular weight of about 75,000 to about 95,000 atomic mass units, a peak molecular weight of about 40,000 to about 60,000 atomic mass unit, a ratio of the weight average molecular weight to the peak molecular weight is about 1.6:1 to about 2.3:1, and a bimodal molecular weight distribution comprising a second local maximum having a second molecular weight of about 200,000 to about 400,000 atomic mass units;
- and
- an other polymer selected from the group consisting of styrenic polymers, polyamides, polyolefins, poly(phenylene sulfide)s, and mixtures thereof.
2 more elements
A thermoplastic composition, comprising:
- a poly(arylene ether) characterized by a weight average molecular weight and a peak molecular weight, wherein a ratio of the weight average molecular weight to the peak molecular weight is about 1.3:1 to about 4:1;
- wherein the poly(arylene ether) is a poly(2,6-dimethyl-1,4-phenylene ether);
- and wherein the poly(2,6-dimethyl-1,4-phenylene ether), after it is blended with the other resin, has a weight average molecular weight of about 75,000 to about 95,000 atomic mass units, a peak molecular weight of about 40,000 to about 60,000 atomic mass unit, a ratio of the weight average molecular weight to the peak molecular weight is about 1.6:1 to about 2.3:1, and a bimodal molecular weight distribution comprising a second local maximum having a second molecular weight of about 200,000 to about 400,000 atomic mass units;
- and
- an other polymer selected from the group consisting of styrenic polymers, polyamides, polyolefins, poly(phenylene sulfide)s, and mixtures thereof.
2 more elements
A thermoplastic composition, comprising:
- a poly(arylene ether) characterized by a weight average molecular weight and a peak molecular weight, wherein a ratio of the weight average molecular weight to the peak molecular weight is about 1.3:1 to about 4:1;
- wherein the poly(arylene ether) is a poly(2,6-dimethyl-1,4-phenylene ether);
- and wherein the poly(2,6-dimethyl-1,4-phenylene ether), after it is blended with the other resin, has a weight average molecular weight of about 75,000 to about 95,000 atomic mass units, a peak molecular weight of about 40,000 to about 60,000 atomic mass unit, a ratio of the weight average molecular weight to the peak molecular weight is about 1.6:1 to about 2.3:1, and a bimodal molecular weight distribution comprising a second local maximum having a second molecular weight of about 200,000 to about 400,000 atomic mass units;
- wherein the poly(arylene ether) comprises about 10 to about 20 weight percent of molecules having a molecular weight greater than 500,000 atomic mass units;
- and
- an other polymer selected from the group consisting of styrenic polymers, polyamides, polyolefins, poly(phenylene sulfide)s, and mixtures thereof.
3 more elements
Dependencies are inferred from the claim text.