Macro azo initiators (MAI) are a class of unique azo compounds, which can produce block polymers easily by polymerizing with radical polymeric vinyl monomer. MAI has repeated structural sequences of polymer segment and azo groups combined with several radical-generating sites. For this reason, when polymerized with the monomer, MAI can be designed to produce polymer with high effect of blocked state. Since it dissolves in various solvents, it can be employed on a wide range of polymerizations such as solution polymerization, suspension polymerization and emulsion polymerization. Since MAI reacts with a variety of monomers in copolymerization, it is highly potential for molecule design of block polymer and structure control for any purpose. VPS series whose polymer segment is polydimethylsiloxane and VPE series whose polymer segment is polyethyleneglycol are available in Wako. Besides, Wako undertakes custom manufacturing for various block polymers utilizing MAI.
VPS series (azo initiator having polydimethylsiloxane unit)
|Molecular weight of polydimethylsiloxane unit|
VPS-1001N has polydimethylsiloxane (silicone) unit and its block polymer polymerized with vinyl monomer can easily reflect features such as heat resistance, water repellency, lubricating ability, mold releasing, biocompatibility and gas permeability in resin materials blending with other polymers.
VPE series (azo initiator having polyethyleneglycol unit)
|Molecular weight of PEG unit|
VPE series have polyethyleneglycol (PEG) unit and its block polymer radically polymerized with vinyl monomer can easily reflect features such as hydrophilicity, dispersibility, antistatic property and anti-tarnish property in resin materials blending with other polymers.