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US 2015/0307639 A1Published application
High Melt Strength Polypropylene and Methods of Making Same
AssigneeFina Technology, Inc.
InventorsFengkui Li, John Ashbaugh, David Rauscher, Robert Dotter
Life of this patent
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Abstract
A high melt strength polypropylene is formed using maleated polypropylene and a combination of coupling agents and acid neutralizers. The maleated polypropylene can be formed using multi-functional monomers. The high melt strength polypropylene can be useful for foaming, sheet extrusion thermoforming, extrusion blow molding, extrusion coating, fiber, film, and the like.
Claims38
1-14. (canceled)
A method of making a high melt strength polypropylene ionomer, comprising:
- reactively blending a combination of a functionalized polypropylene, from 0.5 to 1.0 weight percent water, from 0.5 to 10 weight percent of an acid neutralizer, and an amine coupling agent, and
- recovering a polypropylene product of enhanced melt strength.
(canceled)
A method of making a high melt strength polypropylene, comprising:
- reactively blending a combination of maleated polypropylene that has been formed in the presence of an acrylate multi-functional monomer, an amine coupling agent, and an acid neutralizer;
- and
- recovering a polypropylene product of enhanced melt strength.
A method comprising:
- reactively blending a functionalized polypropylene with an amine coupling agent, an acid neutralizer, or combinations thereof;
- and
- recovering a polypropylene product.
A method comprising:
- reactively blending a combination of a polypropylene, a free radical initiator, a graftable monomer, an amine coupling agent, and an acid neutralizer in a single reactive extrusion;
- and
- recovering a polypropylene ionomer.
Dependencies are inferred from the claim text.