Zareanshahraki, F. published the artcileSynthesis of non-isocyanate polyurethanes and their application in radiation-curable aerospace coatings, SDS of cas: 1761-71-3, the publication is Progress in Organic Coatings (2020), 105394, database is CAplus.
In this study, a series of sustainable UV-curable non-isocyanate urethane acrylate (NIPU-AC) oligomers, with different structures and acrylate equivalent weights, were synthesized and used as a primary building block of UV-curable coatings for aerospace applications. Synthesis of the NIPU-AC oligomers was carried out in three steps: First, multi-functional cyclic carbonates (MFCC) were prepared by carbonation of aliphatic epoxy compounds under mild temperature and pressure conditions in the presence of a catalyst. In the next step, amine-terminated polyurethane oligomers (PUPAs) were synthesized by the reaction of MFCCs with a stoichiometric excess amount of aliphatic and cycloaliphatic amines. (meth)acrylate functionality was then introduced by direct reaction of amine groups at the chain ends of PUPAs with methacrylic anhydride (MAAH). Finally, UV-curable NIPU coatings, as a new generation of sustainable coatings for aerospace applications, were developed and evaluated for aerospace-critical performance properties, such as low-temperature flexibility and resistance to specific chems./fluids. The results showed that flexibility at -54°C (no cracks or delamination at 1/8″), and good chem. resistance (MEK double rubs > 90, and no significant change in the appearance regarding the fluids) could be reached through the proper design of NIPU-ACs, selection of appropriate reactive diluents, and UV-cure conditions.
Progress in Organic Coatings published new progress about 1761-71-3. 1761-71-3 belongs to quinuclidine, auxiliary class Ploymers, name is 4,4-Diaminodicyclohexyl methane, and the molecular formula is C14H20BClO2, SDS of cas: 1761-71-3.
Referemce:
https://en.wikipedia.org/wiki/Quinuclidine,
Quinuclidine | C7H13N | ChemSpider