Ethylene-vinyl alcohol copolymer composition, and monolayer film and multilayer structure containing the same
AssigneeChang Chun Petrochemical Co., Ltd.
InventorsShih Yuan Su, Hou Hsi Wu
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Abstract
An ethylene-vinyl alcohol copolymer composition, a single-layer film and a multilayer structure containing the same. The ethylene-vinyl alcohol copolymer composition includes an ethylene-vinyl alcohol copolymer, an antioxidant, and a fluorine-containing compound; and the ratio of the antioxidant content to the fluorine content is 0.5 to 65. Thereby, the film containing said ethylene-vinyl alcohol copolymer composition not only has good heat resistance, but also can avoid the situation that a large number of gels are generated during the preparation process.
Claims9
An ethylene-vinyl alcohol copolymer (EVOH) composition, comprising an ethylene-vinyl alcohol copolymer with an ethylene content ranging from 20 mole % to 50 mole %, an antioxidant, and a fluorine-containing compound, wherein a ratio of an antioxidant content of the ethylene-vinyl alcohol copolymer composition to a fluorine content of the ethylene-vinyl alcohol copolymer composition ranges from 0.5 to 65;
- wherein the antioxidant content ranges from 250 ppm to 3200 ppm and the ethylene-vinyl alcohol copolymer composition has the fluorine content ranging from 40 ppm to 700 ppm;
- wherein the antioxidant is selected from the group consisting of a hindered-phenol-based antioxidant, a hindered-amine-based antioxidant, a phosphorous-ester-based antioxidant, a thioester-based antioxidant, a benzotriazole-based antioxidant, and a benzophenone-based antioxidant, and the fluorine-containing compound is derived from a compound of any one, or a combination selected from the group consisting of vinylidene fluoride (VDF), hexafluoropropylene (HFP), and tetrafluoroethylene (TFE).
Dependencies are inferred from the claim text.