Polyvinyl chloride elastomers
AssigneeTeknor Apex Company
InventorsDexi Weng, John C. Andries, Keith G. Saunders
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Abstract
Thermoplastic elastomers including a polyvinyl chloride and a nitrile rubber additive are disclosed. The nitrile rubber additive can be crosslinked and/or essentially free of plasticizer. The thermoplastic elastomers can include additional materials, such a copolyester and/or a plasticizer. The thermoplastic elastomers can be soft, elastomeric and/or oil resistant. The thermoplastic elastomers can have good low temperature properties. The thermoplastic elastomers can have good flame retardant, smoke suppressant and/or char forming properties.
Claims17
A thermoplastic elastomer composition, comprising:
- a polyvinyl chloride;
- and
- a nitrile rubber additive, wherein the thermoplastic elastomer composition has a compression set of from about 20 to about 50, a Shore A hardness of no greater than about 60, and retains its integrity when immersed in ASTM #1 oil for a period of about three days at a temperature of about 125° C. or when immersed in ASTM #3 oil for a period of about three days at a temperature of about 125° C., and wherein the thermoplastic elastomer composition has a melt flow rate of at least about 3.
A thermoplastic elastomer composition, comprising:
- a polyvinyl chloride;
- and
- a nitrile rubber additive, wherein the thermoplastic elastomer has a brittle point of no greater than about −50° C.
Dependencies are inferred from the claim text.