Branched Vinyl Polymers

Architectural thermal and rheological characterization of the derived branched products.

Branched vinyl polymers.

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. 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. Manufacturing of vinyl acetate veova vinyl ester polymers is easy due to the favorable reactivity characteristics of the veova monomer and vinyl acetate.

It is expected that these branched polymers will be used as polymer rheological modifiers 1 2 3 4. Also discovered is a vinyl polymer resin comprised of from 0 1 to 50 weight percent of non linear polymers having at least 0 06 branches 1000 backbone carbons where branching is measured using a heat polymerized polystyrene having from 0 0 to 0 06 branches 1000 backbone carbons as a linear reference. Graft copolymers 1 4 are one of the important classes of branched polymers and. Synthesis of branched vinyl polymer using a balance of crosslinker and radical transfer agent.

Branched polymers of styrene methyl methacrylate mma and vinyl acetate vac were prepared under solvent free conditions through radical polymerization in the presence of a peroxide monomer. Reported the preparation of branched vinyl polymer through self condensing vinyl polymerization of an inimer scvp. In addition the zimm branching factor g. Table 1 summarises the results obtained.

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. 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. For those reactions with 1 mol crosslinker and no thiol the reactions gelled. Veova vinyl esters are commonly used in vinyl acetate and acrylic polymers where they greatly improve hydrolytic stability adhesion water and uv resistance.

Macromolecules 2009 42 20 7745 7752. It was not until 1995 that fréchet et al.