Poly Vinyl Acetate Monomer

Vinyl acetate monomer vam is mainly used in polyvinyl acetate which has applications in water based paints adhesives acrylic fibres paper coatings and non woven binders. 3 the monomer vinyl acetate was first produced on an industrial scale by the addition of acetic acid to acetylene with a mercury i salt 4 but it is now primarily made by palladium catalyzed oxidative addition of acetic acid to ethylene. The major industrial route involves the reaction of ethylene and acetic acid with oxygen in the presence of a palladium catalyst.

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1 acetoxyethylene ethenyl acetate ethenyl ethanoate vac vinyl acetate monomer vinyl ethanoate colorless liquid with a pleasant fruity odor.

Poly vinyl acetate monomer.

Vinyl acetate monomer is mainly used in the production of polyvinyl acetate pvac and polyvinyl alcohol pvoh or pva. It is also used in adhesives. Polyvinyl acetate a synthetic resin prepared by the polymerization of vinyl acetate. Polyvinyl alcohol pvoh used in packaging film and glass laminates is the second largest consumer.

Poly vinyl acetate poly vinyl acetate pva is a thermoforming resin that is usually water carried and generally used for the wood working and diy industries. Celanese is a global leader in polyvinyl acetate homopolymer emulsions often called pvac or occasionally pva homopolymers. Learn more about polyvinyl acetate in this article. 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.

Polyvinyl acetate is used in paints adhesives paper coatings and textile treatments while polyvinyl alcohol is used in the production. It is a nonstructural adhesive with low price convenient usage and wide application range. Poly vinyl acetate was discovered in germany in 1912 by fritz klatte. Polyvinyl acetate is synthesized by the emulsion polymerization of vinyl acetate monomer vam.

The method allows us to detect as little as 3 mg kg vinyl acetate in polymer. Pvac emulsions are best known for their use in wood glues or school glues due to their strong adhesion properties. In this test the vinyl acetate is extracted from pvac into an appropriate solvent and analysed using gas chromatography with a flame ionization detector. Vinyl acetate is the acetate ester of vinyl alcohol.

Raw material for many polyvinyl resins. Polyvinyl acetate adhesives pvac polyvinyl acetate latex known as white latex is made of vinyl acetate monomer water dispersing agent polymerization starter and other auxiliary materials mixed together through emulsion polymerization. In fact 80 of all the vam produced in the world is used to make these two chemicals. Lcs laboratory offers the analysis of poly vinyl acetate for traces of vinyl acetate monomers.

In its most important application polyvinyl acetate serves as the film forming ingredient in water based latex paints.

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