Thermoplastic elastomers exhibiting superior food contact compliance
AssigneePolyOne Corporation
InventorsGuoqiang Qian, Krishna Venkataswamy
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Abstract
A blend of any of three specific olefin polymers and ethylene/alpha-olefin interpolymer is disclosed. Optionally, the blend also includes styrene-isobutylene-styrene thermoplastic vulcanizate and calcium carbonate filler. The blend has good processability and passes Olive Oil Extraction Test EU82/711/EEC and the FDA Food Contact Test required at 21 CFR §177.2600, enabling plastic articles of the blend to be used as thermoplastic elastomers in food handling and storage articles.
Claims20
A plastic article, comprising a compound comprising
- (a) an olefin polymer selected from the group consisting of high density polyethylene, a homopolymer of propylene, and a random copolymer of propylene and ethylene, and combinations thereof and
- (b) ethylene/alpha-olefin interpolymer,
- wherein the plastic article passes Olive Oil Extraction Test EU82/711/EEC or Iso-octane Extraction Test EN1186-14.
A method of making a plastic article compliant with Olive Oil Extraction Test EU82/711/EEC, comprising the step of shaping the plastic article from a compound comprising
- (a) an olefin polymer selected from the group consisting of high density polyethylene, a homopolymer of propylene, and a random copolymer of propylene and ethylene, and combinations thereof and
- (b) ethylene/alpha-olefin interpolymer.
Dependencies are inferred from the claim text.