Acrylic Macromonomers
"Acrylic" refers to a variety of ethylenically unsaturated monomers and comonomers that may be copolymerized with methacrylate monomers to form the oligomers or macromonomers. Thus the resulting macromonomers may comprise a variety of methacrylate ester monomers, acrylate ester monomers, styrene and alpha-methylstyrene, acrylonitrile and methacrylonitrile monomers. Other comonomers such as methylenebutyrolactone, vinylpyrrolidinone, chloroprene, vinyl acetate may also be incorporated into the macromonomers in lesser amounts. (RDC 2/4/2011)
Recent US Patents
10/19/2010
7,816,467
Processes for hydrazine addition to acrylic macromonomers and products therefrom
Ittel and Gridnev of DuPont, Delawarehave formed adducts of hydrazines with acrylic macromonomers Ring-closing reactions oare used to form aminolactams. The adducts are useful, for example, for making adhesives, surfactants, viscosity modifiers, processing aids, and other products. (RDC 1/24/2011)
Recent Journal Articles
Synthesis and photopolymerization kinetics of linear alicyclic urethane acrylate macromonomer in presence of reactive diluents
(2221-2228) Journal of Materials Science 46 #7 (2011)
Harikrishna et al, India showed that the rate of photopolymerization rapidly increases at very early stages of the reaction. The rate of reaction was further found to increase with the addition of crosslinking agents. The addition of trifunctional crosslinking agent to the macromonomeric formulation resulted in a higher polymerization rate and conversion than that of a difunctional crosslinking agent. (RDC 2/22/2011)