Branched Vinyl Polymers

Architectural thermal and rheological characterization of the derived branched products.

Branched vinyl polymers.

Manufacturing of vinyl acetate veova vinyl ester polymers is easy due to the favorable reactivity characteristics of the veova monomer and vinyl acetate. The copolymerization of hydrophobic vinyl ester of branched neo carboxylic acids significantly improves the performance of vinyl and acrylic binders. An approach to branched vinyl polymers through radical polymerization in the presence of 3 mercaptohexyl methacrylate mhm as the chain transfer monomer is reported in this paper. Synthesis of branched vinyl polymer using a balance of crosslinker and radical transfer agent.

For those reactions with 1 mol crosslinker and no thiol the reactions gelled. Table 1 summarises the results obtained. It is expected that these branched polymers will be used as polymer rheological modifiers 1 2 3 4. Veova vinyl esters are commonly used in vinyl acetate and acrylic polymers where they greatly improve hydrolytic stability adhesion water and uv resistance.

It was not until 1995 that fréchet et al. Graft copolymers 1 4 are one of the important classes of branched polymers and. Application of the strathclyde route to branched vinyl polymers in suspension polymerization. Macromolecules 2009 42 20 7745 7752.

In the case of polymerization at styrene100 mhm5 0 aibn2 0 the molecular weight increased with conversion and reached a value of 7 3 105 g mol at 99 conversion. Reported the preparation of branched vinyl polymer through self condensing vinyl polymerization of an inimer scvp. Furthermore radical polymerization in the presence of the peroxide monomer can be operated in a simple polymerization composition involving only the. Branched polymers have attracted increasing interest due to their numerous and various applications originating from a large variety of available polymer topologies compositions or morphologies for phase separating systems as emulsifier and interfacial compatibilizers or for surface modification properties.

Veova vinyl esters have unique highly branched aliphatic structures which contribute to the enhancement of key polymer performance properties. Copolymerisations of mma and bda were carried out in toluene solution under vacuum at 80 c using a standard methodology.