Polymerization of methyl methacrylate by sterically modulated bis(salicylaldiminate)-cobalt(II) complexes combined with methylaluminoxane

Synthesis and structural characterisation of tetrahedral zinc(II) and trigonal bipyramidal cadmium(II) complexes containing N′-cyclohexyl substituted N,N-bispyrazolyl ligand

“…Thus, MMA polymerisation through coordination complexes is used to achieve PMMA with high syndiotacticity, which resulted in T g up to 140°C [66,67,35]. The syndiotacticity of resultant PMMA was around 69%, which was similar to both Zn(II) and Cd(II) complexes.…”

“…However, all the Zn(II) and Cd(II) complexes in the current study have shown 100% conversion. In addition, Fe(II) complex with pyridylmethylamines [65] and Co(II) complex with phenoxy-imine [66] were reported to show moderate activity and syndiotacticity.…”

Cd(II) and Zn(II) Complexes Containing N,N'-Bidentate N-(Pyridin-2-ylmethylene)cyclopentanamine: Synthesis, Characterisation and Methyl Methacrylate Polymerisation

“…Thus, studies on nonradical-mediated MMA polymerisation, which able to produce a higher T g up to 140 o C, have been performed, and some transition metal complexes have successfully been applied to this process. [45][46][47][48][49][50][51][52][53] Recently, we explored the development of transition metal complexes as catalysts for homogeneous polymerisation of MMA to produce syndiotactic PMMA. Although the ligand impy has been applied to rhenium, copper, palladium and platinum complexes, rhenium and copper complexes did not utilized as catalyst for MMA polymerisation.…”

Synthesis, characterization, and MMA polymerization activity of tetrahedral Co (II) complex bearing N, N-bis(1-pyrazolyl)methyl ligand based on aniline moiety

“…The reactions were either unreactive in less polar environments or decomposed in more polar surroundings. However, all complexes could be activated with MMAO to polymerize methyl methacrylate (MMA) to give PMMA with T g from 110°C to 120°C [59][60][61][62]. The results of polymerization, including the influence of temperature and tacticity, are summarized in Table 1 [63].…”