Ethylene vinyl alcohol (EVOH) is a formal copolymer of ethylene and vinyl alcohol. Because the latter monomer mainly exists as its tautomer acetaldehyde, the copolymer is prepared by polymerization of ethylene and vinyl acetate to give the ethylene vinyl acetate (EVA) copolymer followed by hydrolysis. EVOH copolymer is defined by the mole % ethylene content: lower ethylene content grades have higher barrier properties; higher ethylene content grades have lower temperatures for extrusion. It is also used as a hydrocarbon barrier in plastic fuel tanks and pipes.
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| - Ethylen-Vinylalkohol-Copolymer (de)
- EVOH (es)
- Ethylene vinyl alcohol (en)
- EVOH (nl)
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| - Ethylen-Vinylalkohol-Copolymer, Kurzzeichen EVOH, gelegentlich auch EVAL, ist ein Copolymer, das formal aus den Monomeren Ethen und Vinylalkohol aufgebaut ist. (de)
- El Etilen-Vinil-Alcohol, comúnmente abreviado como EVOH o EVAL, es un polímero termoplástico utilizado ampliamente en la industria de empaques para alimentos. (es)
- EVOH, de afkorting van etheen-vinylalcohol, is een synthetisch polymeer dat formeel gezien een copolymeer is van etheen en vinylalcohol. Maar omdat deze laatste verbinding bijna uitsluitend voorkomt onder de vorm van het tautomeer aceetaldehyde, wordt EVOH geproduceerd uit een ander polymeer, namelijk door hydrolyse van EVA (het copolymeer van etheen met vinylacetaat). Dit is vergelijkbaar met de productiewijze van polyvinylalcohol uit polyvinylacetaat. (nl)
- Ethylene vinyl alcohol (EVOH) is a formal copolymer of ethylene and vinyl alcohol. Because the latter monomer mainly exists as its tautomer acetaldehyde, the copolymer is prepared by polymerization of ethylene and vinyl acetate to give the ethylene vinyl acetate (EVA) copolymer followed by hydrolysis. EVOH copolymer is defined by the mole % ethylene content: lower ethylene content grades have higher barrier properties; higher ethylene content grades have lower temperatures for extrusion. It is also used as a hydrocarbon barrier in plastic fuel tanks and pipes. (en)
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| - Ethylene-vinyl alcohol polymer.svg (en)
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| - Ethenol, polymer with ethene (en)
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| - Ethylen-Vinylalkohol-Copolymer, Kurzzeichen EVOH, gelegentlich auch EVAL, ist ein Copolymer, das formal aus den Monomeren Ethen und Vinylalkohol aufgebaut ist. (de)
- Ethylene vinyl alcohol (EVOH) is a formal copolymer of ethylene and vinyl alcohol. Because the latter monomer mainly exists as its tautomer acetaldehyde, the copolymer is prepared by polymerization of ethylene and vinyl acetate to give the ethylene vinyl acetate (EVA) copolymer followed by hydrolysis. EVOH copolymer is defined by the mole % ethylene content: lower ethylene content grades have higher barrier properties; higher ethylene content grades have lower temperatures for extrusion. The plastic resin is commonly used as an oxygen barrier in food packaging. It is better than other plastics at keeping air out and flavors in, is highly transparent, weather resistant, oil and solvent resistant, flexible, moldable, recyclable, and printable. Its drawback is that it is difficult to make and therefore more expensive than other food packaging. Instead of making an entire package out of EVOH, manufacturers keep costs down by coextruding or laminating it as a thin layer between cardboard, foil, or other plastics. It is also used as a hydrocarbon barrier in plastic fuel tanks and pipes. (en)
- El Etilen-Vinil-Alcohol, comúnmente abreviado como EVOH o EVAL, es un polímero termoplástico utilizado ampliamente en la industria de empaques para alimentos. (es)
- EVOH, de afkorting van etheen-vinylalcohol, is een synthetisch polymeer dat formeel gezien een copolymeer is van etheen en vinylalcohol. Maar omdat deze laatste verbinding bijna uitsluitend voorkomt onder de vorm van het tautomeer aceetaldehyde, wordt EVOH geproduceerd uit een ander polymeer, namelijk door hydrolyse van EVA (het copolymeer van etheen met vinylacetaat). Dit is vergelijkbaar met de productiewijze van polyvinylalcohol uit polyvinylacetaat. (nl)
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| - Ethenol, polymer with ethene (en)
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