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US 10,584,237 B2Granted
Modified polypropylene and polymer blends thereof
AssigneeBraskem America, Inc.
InventorsElliot Carnevale, Riley Stevens, Kimberly Miller McLoughlin, William Scott Miller, Michael Robert Stephans, Steven Michael Krupinski
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Abstract
A propylene-based polymer composition is characterized by a melt strength at 190° C. of at least 20 cN, a melt drawability at 190° C. of at least 100 mm/s, and a flexural modulus at room temperature of at least 240,000 psi. The propylene-based polymer composition includes a propylene-based polymer resin having a crystallinity of at least 50% coupled with a poly(sulfonyl azide).
Claims27
A propylene-based polymer composition comprising:
- a propylene-based polymer resin having a crystallinity of at least 50%;
- a poly(sulfonyl azide);
- and
- a first uncoupled polypropylene homopolymer resin;
- wherein the propylene-based polymer composition has a melt strength at 190° C. of at least 20 cN, a melt drawability at 190° C. of at least 100 mm/s, a melt flow rate of at least 1.8 g/10min, and a flexural modulus at room temperature of at least 240,000 psi.
2 more elements
A propylene-based polymer composition comprising:
- 1-99% (by total weight of the composition) of a poly(sulfonyl azide)-coupled propylene-based polymer resin, the poly(sulfonyl azide)-coupled propylene-based polymer resin comprising:
- 90-99% (by total weight of the poly(sulfonyl azide)-coupled propylene-based polymer resin) of a homopolymer propylene resin having a crystallinity of at least 50%;
- 1-10% (by total weight of the poly(sulfonyl azide)-coupled propylene-based polymer resin) of a copolymer resin comprising a copolymer of ethylene and propylene;
- and
- 1000-2000 ppm (by total weight of the poly(sulfonyl azide)-coupled propylene-based polymer resin) of a poly(sulfonyl azide);
- and
- 1-99% (by total weight of the composition) of an uncoupled homopolymer polypropylene resin;
- wherein the propylene-based polymer composition has a melt strength at 190° C. of at least 20 cN, a melt drawability at 190° C. of at least 145 mm/s, an Izod impact resistance at room temperature (measured according to ASTM D256-10e1) of greater than or equal to 1.20 ft-lb/in, a melt flow rate of at least 1.8 g/10 min, and a flexural modulus at room temperature of at least 240,000 psi.
5 more elements
Dependencies are inferred from the claim text.