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US 12,674,049 B2Granted
Polymer processing aids
AssigneeExxonMobil Technology and Engineering Company
InventorsMichael A Leaf, Danny Van Hoyweghen, Haiqing Peng, Petra M. Eiselt, Luke A. Galuska
Life of this patent
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Abstract
Methods and compositions for processing polymers with fluorine-free polymer processing aids (PPAs) are described. The methods can include extruding a polymer composition, optionally with a masterbatch, wherein the polymer composition and/or the masterbatch comprises a fluorine-free PPA to make a polymeric film. The PPA comprises a mixture of one or more polyamides and one or more polyphosphites.
Claims16
A polymer composition comprising:
- a C2-C6 olefin homopolymer or a copolymer of two or more C2-C20 α-olefins;
- and
- a polymer processing aid;
- wherein:
- the polymer processing aid comprises a mixture of one or more polyamides and one or more polyphosphites;
- the one or more polyamides are selected from a group consisting of aliphatic polyamides;
- the mixture is present in the polymer composition in an amount in the range of from 560 ppm to 4,400 ppm;
- and
- the polymer composition is substantially free of fluorine.
6 more elements
Dependencies are inferred from the claim text.