Espeel, Pieter; Goethals, Fabienne; Driessen, Frank; Nguyen, Le-Thu T.; Du Prez, Filip E. published an article in 2013, the title of the article was One-pot, additive-free preparation of functionalized polyurethanes via amine-thiol-ene conjugation.COA of Formula: C4H8ClNOS And the article contains the following content:
A one-pot, isocyanate-free method for synthesis of functionalized polyurethanes based on amine-thiol-ene conjugation is presented. Aminolysis of a readily available AB’-urethane monomer, containing both an acrylate (A) and a thiolactone unit (B’), facilitates the preparation of various reactive thiol-acrylates. In situ polymerization via Michael addition proceeds under ambient conditions, yielding polyurethanes with a large variety of chem. functionalities. Side-chain functionality originates from the modular use of different amines, allowing for the introduction of pendent functional groups (e.g. double bond, triple bond, furfuryl, tertiary amine, morpholine) along the polyurethane backbone. Extensive model studies revealed the kinetic profile of this reaction sequence and excluded the occurrence of competing reactions, such as aza-Michael addition and disulfide formation. This mild one-pot reaction requires no additives or external trigger, and the obtained polyurethanes remain soluble throughout the process, enabling post-polymerization modification in the same reaction medium. The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).COA of Formula: C4H8ClNOS
The Article related to amine thiol acrylate reaction isocyanate free polyurethane synthesis, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.COA of Formula: C4H8ClNOS
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