Vinyl Acetate Emulsion Polymerization Pdf

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.

Vinyl acetate emulsion polymerization pdf. It is also used for the production of various copolymers like acrylonitrile butadiene styrene abs. Whereas stable pvac latexes were obtained a stable pst latex was obtained only in the case of hs pva. El ltasser a n d j w. 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.

Therefore vinyl acetate runaway polymerization incidents are very serious and they occur with a high frequency. 7 1983 261 262 261 elsevier science publishers b v. Kinetics of the emulsion polymerization of vinyl acetate. Poly vinyl acetate latex b.

Persulfate initiated vinyl acetate vinyl versatate copolymer latex d. I the ty pe of dispersion oil in water or water in oil. The standards used for pvac wood adhesives are for example en 204 and en 205. Emulsion polymerization of vinyl acetate with renewable raw materials as protective colloids hanna lange 8 2 1 2 classification of adhesives pvac wood adhesives are classified according to different european standards en.

Poly vinyl acetate latex c. Emulsion polymerization of styrene st and vinyl acetate vac in the presence of conventional polyvinyl alcohol pva pva modified with a terminal alkyl group or pva modified with a terminal thiol group hs pva was compared. Vinyl acetate acrylonitrile esters of acrylic acid heterogeneous if polymer is insoluble leading to precipitation powder or granular polymerization. Effects of polymerization variables on the properties of vinyl acetate based emulsion polymers.

Solution polymerization general description. Emulsion polymerization formulations a. Amsterdam printed in the netherlands book review emulsion polymerization o f vinyl acetate e d i t e d b y m s. 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 metabisulfite initiated vinyl acetate vinyl. V a n d e r h o f f a p p l i e d s c i e n c e publishers n e w j e r s e y 1 9 8 1 xiv 290 pp 4 8. 1 2 overview of free radical emulsion polymerization an emulsion polymerization is one that takes place in a heterogeneous dispersion.

There are many different types of emulsion polymerizations depending on.