Telechelic Polymers (Macromers) (Macromonomers)
"A telechelic polymer or oligomer is a prepolymer capable of entering into further polymerization or other reactions through its reactive end-groups[1]. It can be used for example to synthesize block copolymers. By definition, a telechelic polymer is a di-end-functional polymer where both ends possess the same functionality. Where the chain-ends of the polymer are not of the same functionality they are termed di-end-functional polymers. " (Wikipedia, Telechelic Polymers, 1/18/2011)
Telechelic polymers are macromolecules with two reactive end groups and are used as cross-linkers, chain extenders, and important building blocks for various macromolecular structures, including block and graft copolymers, star, hyperbranched or dendritic polymers. (Tasdelen, Kahveci and Yagci, Prog Polym. Sci., 36 #4, 455-567 (2011)
Acrylic Macromers
Compounding
Polybutadiene Macromers
Polystyrene (PS) Telechelic Polymers
Protein Macromers
Vegetable Oil Macromers
Recent US Patents
10/4/2011
8,030,423
Multi-armed macromonomers
Salamone and Kunzler, Texas and New York, developed multi-armed macromonomers containing multiple side chains attached to a siloxy-containing core terminated on each end with one or more first substantially linear polysiloxane radicals having a polymerizable ethylenically unsaturated-containing terminal group, wherein each side chain comprises a second substantially linear polysiloxane radical having a polymerizable ethylenically unsaturated-containing terminal group are disclosed. Biomedical devices such as contact lenses formed from the multi-armed macromonomers are also disclosed. (RDC 10/6/2011)
10/19/2010
Aqueous-based polymers for sound deadening applications
Kania et al of PPG Ohio developedcopolymers prepared in aqueous medium from macromonomers and ethylenically unsaturated monomers. These copolymers are useful for sound and vibration dampening applications. (RDC 1/24/2011)
7/13/2010
7,754,241
Macromonomer for preparation of a degradable hydrogel
Webb and Vyavaharehave developed a degradable hydrogel using a macromonomer consisting of an ester, an alkyl group spacer, and a terminal vinyl group. (RDC 9/7/2010)
Recent Journal Articles
Synthesis and characterization of a novel silicone containing vinylic macromonomer and its uses in the preparation of poly (silicone-co-styrene-co-butylacrylate) with montmorillonite nanocomposite emulsion
(1227–1237)Journal of Applied Polymer Science 123 #2 (2012)
Naghash and Hajati of Islamic Azad University, Iran, synthesized a new silicone containing macromonomer, 4-(methacrylamido) phenoxy polymethylhydrosiloxane (4-MPMHS) with a vinyl group. Then poly (silicone-co-styrene-co-butylacrylate) with montmorillonite, P (Si-co-St-co-BA) with MMT nanocomposite emulsion was prepared by in situ intercalative emulsion polymerization of styrene (St), butyl acrylate (BA), and 4-MPMHS, in the presence of organic modified montmorillonite (OMMT) with different OMMT contents (0, 0.5, 1.0, 1.5, and 2 wt %). Potassium persulphate (KPS) was used as an initiator and sodium lauryl sulfoacetate (SLSA) and nonyl phenol ethylene oxide—40 U (NP-40) were used as anionic and nonionic emulsifiers, respectively. Results showed that OMMT could improve the properties of the emulsion. In other words, the properties of nanocomposite emulsions were better when compared with those of the silicone-acrylate emulsion. (RDC 10/12/2011)
Review Articles
Telechelic polymers by living and controlled/living polymerization methods Review Article
(455-567) Progress in Polymer Science 36 #4 (2011)
Tasdelen, Kahveci and Yagci of the Istanbul Technical University, Turkey reviews the preparation of Telechelic polymers, defined as macromolecules that contain two reactive end groups, are used as cross-linkers, chain extenders, and important building blocks for various macromolecular structures, including block and graft copolymers, star, hyperbranched or dendritic polymers. This review article describes the general techniques for the preparation of telechelic polymers by living and controlled/living polymerization methods; namely atom transfer radical polymerization, nitroxide mediated radical polymerization, reversible addition-fragmentation chain transfer polymerization, iniferters, iodine transfer polymerization, cobalt mediated radical polymerization, organotellurium-, organostibine-, organobismuthine-mediated living radical polymerization, living anionic polymerization, living cationic polymerization, and ring opening metathesis polymerization. The efficient click reactions for the synthesis of telechelic polymers are also presented. (RDC 2/9/2011)