US Patent No: 5,069,955
Number of patents in Portfolio can not be more than 2000
Film and blends of polyetheramide block copolymer and ethylene vinyl alcohol
Stats
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Dec 3, 1991
Issued date -
Jan 25, 1990
filing date -
07/471,009
serial no -
Expired
status
Importance
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Abstract
Ethylene vinyl alcohol copolymer is blended with polyetheramide block copolymer to form a novel composition of matter. The blended composition can be extruded and/or coextruded to make packaging films. In the most preferred embodiments, the blend is contained as one layer in a film comprising a multiplicity of layers, and at least the blend layer is molecularly oriented. Methods of making the films are also disclosed.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,347,332 Polyamide/polyethylene copolymer film and method for producing | 45 | 1981 | |
| 4,717,618 Film and blends of polyetheramide block copolymer and ethylene vinyl alcohol copolymer | 10 | 1985 | |
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| 4,500,677 Resin composition excellent in drawability | 21 | 1983 | |
| 4,562,118 Films, sheets, laminates and molded articles having gas barrier properties | 37 | 1984 | |
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| 4,427,825 Blends of polyamide and ethylene vinyl alcohol copolymers | 32 | 1981 | |
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| 4,464,438 Blends of polyvinyl alcohol and ethylene-vinyl alcohol copolymer as grease resistant melt extrudable films | 31 | 1983 | |
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| 4,365,041 Resin composition comprising water-soluble polyamide and vinyl alcohol-based polymer | 30 | 1981 | |