01751nas a2200217   4500008004100000022001400041245014800055210006900203260007300272300001000345490000800355520086600363653001501229653002501244653002801269653003601297653002701333100002001360700002101380856013201401       2013                        eng d  a0926-860X00aInfluence of method of preparation of solid, double-metal cyanide complexes on their catalytic activity for synthesis of hyperbranched polymers0 aInfluence of method of preparation of solid doublemetal cyanide   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAUG  a51-600 v4643 a<p>Catalytic activity of a series of Fe-Zn double-metal cyanide (DMC) complexes with varying structural and acidic properties has been investigated for the synthesis of hyperbranched polyesters (HPs) from glycerol and succinic acid/adipic acid. The DMC complexes were prepared using different complexing and co-complexing agents. Hydrophobicity of the surface, Lewis acidity and micro-mesoporous architecture are the critical features of DMC enabled control on gelation process in preparing HPs of high degree of branching. The micro-mesoporous architecture of DMC acts as a nano-reactor for reactant molecules to form primary condensation products which further polymerize yielding dendrimers. Hyperbranched polyesters of degree of branching as high as 90% could be achieved without gelation using DMC catalysts. (C) 2013 Elsevier B.V. All rights reserved.</p>10aDendrimers10aDouble-metal cyanide10aheterogeneous catalysis10aHydrophobic solid acid catalyst10aHyperbranched polymers1 aSebastian, Joby1 aSrinivas, Darbha  uhttps://library.ncl.res.in/content/influence-method-preparation-solid-double-metal-cyanide-complexes-their-catalytic-activity-0