Synthesis and copolymerization behavior of methacrylate dimers

Abbey, Kirk J.; Trumbo, David L.; Carlson, G. M.; Masola, M. J.; Zander, R. A.

doi:10.1002/pola.1993.080311330

Cited by 37 publications

(42 citation statements)

References 10 publications

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“…Although it is known that these macromonomers do not copolymerize with MMA, [49][50][51] copolymerization with ethyl acrylate does occur. [49,52] Therefore, copolymerization with BA is Figure 9. Reactivity ratios and 95% joint confidence intervals for the copolymerization of MMA and BA in bulk at 60 8C for different [CoBF].…”

Section: Effect Of Conversion On Cct Copolymerization Of Mma and Bamentioning

confidence: 99%

“…This can only mean that incorporation of macromonomers in the growing polymer chain occurs, as was also reported for MMA-homomacromer-ethyl acrylate copolymerization. [49,52] Although it is obvious that macromer copolymerization takes place at high conversions, it is expected to occur right from the start of the polymerization as well.…”

Section: Effect Of Conversion On Cct Copolymerization Of Mma and Bamentioning

confidence: 99%

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Catalytic Chain Transfer Copolymerization of Methyl Methacrylate and Butyl Acrylate

Pierik

Herk

2003

Macro Chemistry & Physics

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In this work it is shown that catalytic chain transfer is a very efficient way of controlling molecular weight in the copolymerization of methyl methacrylate (MMA) and butyl acrylate (BA). The experimental data are compared to a previously developed model based on copolymerization kinetics and the mechanisms for catalytic chain transfer and for cobalt‐mediated living radical polymerization that can describe the observed transfer constants. Secondly, it is shown that the presence of a catalytic chain transfer agent does not affect the reactivity ratios within the concentration range studied. Finally, the effect of conversion and therewith composition drift on the catalytic chain transfer polymerization of MMA and BA is investigated and it is shown that under the conditions employed in the experiments a certain degree of macromer copolymerization is present at high partial conversions of MMA.

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Section: Effect Of Conversion On Cct Copolymerization Of Mma and Bamentioning

confidence: 99%

Section: Effect Of Conversion On Cct Copolymerization Of Mma and Bamentioning

confidence: 99%

Catalytic Chain Transfer Copolymerization of Methyl Methacrylate and Butyl Acrylate

Pierik

Herk

2003

Macro Chemistry & Physics

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“…For all other monomers oligomer incorporation was achieved. Abbey et al 81 studied the copolymerization behaviour of functional methacrylate dimers with styrene and also found that addition of dimer to a dimer ended radical does not occur.…”

Section: Reactivity and Application Of Macromonomersmentioning

confidence: 99%

Shining a light on catalytic chain transfer

et al. 2002

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The catalytic chain transfer polymerization of styrene is only truly effective when the reaction mixture is exposed to (UV‐)light. The apparent chain transfer constant depends inversely on radical concentration and can be increased up to 8000. These results can be explained by combining aspects of both catalytic chain transfer and the formation of cobalt‐carbon bonds. For the catalytic chain transfer polymerization of n‐butyl acrylate a chain transfer constant of 650 was found. The resulting transfer coefficient has the same order of magnitude as the one for n‐butyl methacrylate. This means that the absence of an α‐methyl group hardly influences the transfer step itself. Furthermore, the effect of possible impurities on the catalytic chain transfer polymerization of methyl methacrylate is investigated.

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“…Cacioli et al 8 showed that MMA macromers prepared via CCT copolymerized with ethyl acrylate. In more recent work, Abbey et al 9 estimated reactivity ratios for MMA dimers (made by CCT) with styrene. A number of patents 10 -12 also have been published on synthesizing comb and star polymers with macromers produced by CCT via copolymerization with acrylate monomers.…”

Section: Macromer Reactivitymentioning

confidence: 98%