Cheng, Kuo-Chung; Cheng, Pei-Shan; Wang, Po-Chih published the artcile< Hyperbranched polyurethane acrylates synthesized via copolymerization of monomers A2 and B3 with monofunctional compound BR added gradually at different rates>, Category: esters-buliding-blocks, the main research area is hyperbranched polyurethane acrylate synthesis copolymerization kinetic model.
A kinetic model was proposed to describe hyperbranched polymers (HBPs) formed by the polymerization of monomers A2 and B3 with monofunctional compound (BR) added gradually in a semibatch reactor. The dependences of the d.p. (DP) and the degree of branching on the reaction time and the monomer compositions were calculated The DP of the HBPs could be increased by the slow addition of BR in the reactor. If the monomers B3 and A2 were mixed at a molar ratio of B3:A2 = 1:3, and the BR was fed slowly into the reactor, the HBPs with weight average DP were approx. 3200 and 16 700 at conversion of 0.95 and 0.99, resp., which were higher than those prepared by the batch system. This theory was further verified by an exptl. demonstration. Hyperbranched polyurethane acrylate can be synthesized with a higher DP in a semibatch system than in a batch reactor.
Polymer Engineering & Science published new progress about Batch reactors. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Category: esters-buliding-blocks.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics