What Is Ethylene Vinyl Acetate

Eva is flexible has good clarity and is resistant to ultraviolet radiation.

What is ethylene vinyl acetate.

The major industrial route involves the reaction of ethylene and acetic acid with oxygen in the presence of a palladium catalyst. Vinyl acetate ethylene vae emulsions are based on the copolymerization of vinyl acetate and ethylene in which the vinyl acetate content can range between 60 and 95 percent and the ethylene content ranges between 5 and 40 percent of the total formulation. The weight percent vinyl acetate usually varies from 10 to 40 with the remainder being ethylene. Ethylene vinyl acetate is a type of plastic a polymer with a wide variety of uses both residential and industrial.

Ethylene vinyl acetate also known as eva is the copolymer of ethylene and vinyl acetate. The food and drug administration fda has stated that ethylene vinyl acetate is safe when used in food production packaging or transportation and it s not an especially dangerous material. Ethylene vinyl acetate copolymer eva for instance is produced by the copolymerization of ethylene and vinyl acetate under pressure using free radical catalysts. The weight percent of vinyl acetate usually varies from 10 to 40 with the remainder being ethylene.

Ethylene vinyl acetate eva also known as poly ethylene vinyl acetate peva is the copolymer of ethylene and vinyl acetate. Ethylene vinyl acetate eva is a random copolymer of ethylene and varying amounts of vinyl acetate va. Eva copolymers are more permeable to. Since vinyl alcohol is highly unstable with respect to acetaldehyde the preparation of vinyl acetate is more complex than the synthesis of other acetate esters.

It is a polymer that approaches elastomeric materials in softness and flexibility yet can be processed like other thermoplastics. Many different grades are manufactured with the vinyl acetate content varying from 5 to 50 percent by weight. There are three different types of eva copolymer which differ in the vinyl acetate va content and the way the materials are used.