Fluorine-Free Polymer Processing Aids
OwnerDanny VAN HOYWEGHEN, Michael A. LEAFinventors
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Abstract
Provided herein are polymer compositions comprising a polymer and a surfactant. The surfactant can serve as a polymer processing aid (PPA), and can include a sorbitan ester and/or a polysorbate, preferably a polysorbate. The polymer composition can optionally include other additives, as well. The polymer can be a C2-Ce olefin homopolymer or a copolymer of two or more C2-C20 a-olefins, and the polymer composition can take the form of polymer pellets; a polymer melt; reactor-grade polymer granules and/or polymer slurries; or other form of polymer composition containing the PPA and optionally one or more other additives. The polymer composition is preferably free or substantially free of fluorine, including fluoropoly mer-based PPAs.
Claims15
A polymer composition comprising:
- a C2-C6 olefin homopolymer or a copolymer of two or more C2-C20 α-olefins;
- and
- from 200 to 5000 ppm (on the basis of mass of the polymer composition) of a surfactant comprising a hydrophilic head and a lipophilic tail.
Dependencies are inferred from the claim text.