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US 2024/0409729 A1Published application
Thermoplastic elastomer composition
AssigneeGEON Performance Solutions, LLC
InventorsYun Martin Lu, Xin Zhang, Xiaofeng Zheng, Qianqian Li
Life of this patent
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Abstract
A thermoplastic elastomer composition and method of making the thermoplastic elastomer are disclosed. The thermoplastic elastomer may comprise a polymer blend. The polymer bland may comprise a non-crosslinked elastomer, oil, and polyethylene. The oil may be from about 15 wt. % to about 60 wt. % oil. The polyethylene may be from about 0.1 wt. % to about 40 wt. %.
Claims21
1-57. (canceled)
A thermoplastic elastomer composition, comprising:
- styrenic block copolymer, wherein the styrenic block copolymer comprises styrene-butadiene-styrene (SBS);
- styrene-ethylene-butylene-styrene (SEBS);
- styrene-isoprene-styrene (SIS);
- styrene-isoprene-butadiene-styrene (SIBS);
- styrene-ethylene-propylene-styrene (SEPS);
- styrene-ethylene-propylene (SEP);
- styrene-ethylene-ethylene-propylene-styrene (SEEPS);
- hydrogenated polybutadiene;
- hydrogenated polyisoprene;
- hydrogenated styrene-isoprene random copolymer;
- poly (styrene-[(butadiene)1-x-(ethylene-co-butylene)x]-styrene), wherein x is the hydrogenated fraction of the molecule;
- and/or hydrogenated styrene-butylene random copolymer;
- from about 15 wt. % to about 60 wt. % oil;
- from about 0.1 wt. % to about 40 wt. % polyethylene;
- and
- wherein the thermoplastic elastomer composition has melt viscosity at shear rate of 67 1/s of about 200 to about 2000 measured at about 200° C.,
- wherein the thermoplastic elastomer composition has a weight percent ratio of styrenic block copolymer to oil of from about 0.4:1 to about 2.5:1, and
- wherein the thermoplastic elastomer composition exhibits compression set from about 12.7% to about 22.1%, measured at about 23° C. for about 22 hours.
15 more elements
Dependencies are inferred from the claim text.