Polymerization Vinyl Acetate

Vinyl acetate may undergo spontaneous exothermic polymerization on exposure to light.

Polymerization vinyl acetate.

Polyvinyl acetate a synthetic resin prepared by the polymerization of vinyl acetate. Vinyl acetate is the acetate ester of vinyl alcohol. 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. All polymerization reactions were performed using a facile approach using 15 ml glass pressure tubes with.

That is the. The polymerization of vinyl acetate is probably the second most frequent cause of runaway reaction accidents in the chemical industry after the phenol formaldehyde runaway reaction. The major industrial route involves the reaction of ethylene and acetic acid with oxygen in the presence of a palladium catalyst. The photoinduced polymerization of vinyl acetate vac proceeded very fast even at 40 c with a catalytic amount of mn 2 co 10 0 025 mol of vac or 5 0 mol of r i and completed within a few hours to give the polymers with controlled molecular weights up to 10 5.

It is a nonstructural adhesive with low price convenient usage and wide application range. Reacts with hydrogen peroxide to form explosive peracetic acid. Reacts with air or water to produces peroxides that initiate explosively violent polymerization. In its most important application polyvinyl acetate serves as the film forming ingredient in water based latex paints.

Applications edit as an emulsion in water pvac emulsions are used as adhesives for porous materials particularly for wood paper and cloth and as a consolidant for porous building stone in. It is also used in adhesives. Therefore vinyl acetate runaway polymerization incidents are very serious and they occur with a high frequency. The emulsion polymerization of vinyl acetate possesses the rather typical properties in comparison the emulsion polymerizations of the comonomers.

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. The controlled polymerization was photoresponsive. In the present report the madix polymerization of vinyl acetate in bulk or solution polymerization dichloromethane dcm or ethyl acetate was investigated in order to optimize monomer conversion and achieve molecular weight control. Vinyl acetate c4h6o2 cid 7904 structure chemical names physical and chemical properties classification patents literature biological activities safety.

Polyvinyl acetate is prepared by the polymerization of vinyl acetate monomer free radical vinyl polymerization of the monomer vinyl acetate.