Emulsion Polymerization Of Vinyl Acetate

Therefore vinyl acetate runaway polymerization incidents are very serious and they occur with a high frequency.

Emulsion polymerization of vinyl acetate.

Poly vinyl acetate latex b. Emulsion polymerization formulations a. It is also used for the production of various copolymers like acrylonitrile butadiene styrene abs. Emulsion polymerization is one of the most important methods for the polymerization of a large number of monomers like vinyl acetate vinyl chloride chloroprene acrylamide acrylates and methacrylates.

The reason is that vinyl caproate which is less soluble in water but subject to the influences of retarders or chain transfer agents in the same degree as vinyl acetate follows the smith ewart equation in emulsion polymerization and styrene when polymerized in aqueous methanol in which the solubility of styrene increases shows a. 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. As a case study the emulsion polymerization of vinyl acetate has been investigated experimentally to assess the practical feasibility of the proposed procedure. Thus more than 45 years after the first commercial production of vinyl acetate latexes their use is still growing both in actual quantities and different applications.

Thus the type of emulsion polymerization process batch semi continuous or. In order to perform a polyvinyl acetate laboratory synthesis as close as possible to that one carried out at industrial scale a rc1 equipment. Vinyl acetate has high water solubility a high monomer polymer swelling ratio and a high chain transfer constant. Polyvinyl acetate is prepared by the polymerization of vinyl acetate monomer free radical vinyl polymerization of the monomer vinyl acetate.

T butyl hydroperoxide sodium formaldehyde sulfoxylate initiated vinyl acetate vinyl versatate copolymer latex e. Persulfate initiated vinyl acetate vinyl versatate copolymer latex d. The emulsion polymerization of vinyl acetate possesses the rather typical properties in comparison the emulsion polymerizations of the comonomers. 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 particular.

The industrial importance of vinyl acetate latexes makes the mechanism and kinetics of their emulsion polymerization of practical as well as scientific interest. Vinyl acetate emulsion polymerization and copolymerization with acrylic monomers provides a collection and logical organization of the. We manufacture these high performance emulsions in all three major regions of the world at our facilities throughout north america europe and asia. Poly vinyl acetate latex c.