Ring-Opening Polymerization of Chloromethyl Thiirane with AlCl3 and Nd(acac)3·3H2O-Al2Et3Cl3 Coordination Catalyst
نویسندگان
چکیده
منابع مشابه
Organocatalytic ring-opening polymerization.
Modern synthetic methods have revolutionized polymer chemistry through the development of new and powerful strategies for the controlled synthesis of complex polymer architectures.1-5 Many of these developments were spawned by new classes of transition metal catalysts for the synthesis of new polyolefin microstructures,5 the design of highly efficient families of “living” polymerization strateg...
متن کاملThermodynamics and Kinetics of Ring - Opening Polymerization
Cyclic monomers that have been polymerized via ring opening encompass a variety of structures, such as alkanes, alkenes, compounds containing heteroatoms in the ring: oxygen [ethers, acetals, esters (lactones, lactides, and carbonates), and anhydrides], sulfur (polysulfur, sulfi des and polysulfi des), nitrogen [amines, amides (lactames), imides, N carboxyanhydrides and 1,3 oxaza derivatives], ...
متن کاملChapter 5: Ring-Opening Metathesis Polymerization with an Ultra- fast-initiating Ruthenium Catalyst
Ring-opening metathesis polymerization (ROMP) is one of the most widely used polymerizations. With the development of well-defined catalysts, such as (t-BuO)2(ArN)Mo=CH(t-Bu) (1), Cl2(PCy3)2Ru=CHPh (2), and Cl2(PCy3)(IMesH2)Ru=CHPh (3), more controlled polymer structures have been obtained by either living polymerization or chain transfer induced polymerization. However, these catalysts suffer ...
متن کاملPulsed-addition ring-opening metathesis polymerization: catalyst-economical syntheses of homopolymers and block copolymers.
Poly(tert-butyl ester norbornene imide) homopolymers and poly(tert-butyl ester norbornene imide-b-N-methyloxanorbornene imide) copolymers were prepared by pulsed-addition ring-opening metathesis polymerization (PA-ROMP). PA-ROMP is a unique polymerization method that employs a symmetrical cis-olefin chain transfer agent (CTA) to simultaneously cap a living polymer chain and regenerate the ROMP ...
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ژورنال
عنوان ژورنال: Polymer Journal
سال: 1997
ISSN: 0032-3896,1349-0540
DOI: 10.1295/polymj.29.1037