Development of high-performance networked polymers based on cyclotrimerization of isocyanates: Control of properties by addition of monoisocyanates

• Published in: Journal of polymer science. Part A, Polymer chemistry Vol. 50; no. 20; pp. 4365 - 4367
• Main Authors: Moritsugu, Masaki, Sudo, Atsushi, Endo, Takeshi
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 15.10.2012; Wiley
• Subjects: Applied sciences; Copolymerization; cyclopolymerization; Exact sciences and technology; high performance polymers; isocyanurate; networks; Organic polymers; Physicochemistry of polymers; Preparation, kinetics, thermodynamics, mechanism and catalysts; Substituent effect; isocyanurate; Organic isocyanate; Fluorine containing copolymer; Cyclopolymerization; Composition effect; Experimental study; networks; Triazine derivative copolymer; Thermal stability; Crosslinked copolymer; Cyclopolymer; Organic diisocyanate; Preparation; high performance polymers
• ISSN: 0887-624X; 1099-0518
• DOI: 10.1002/pola.26240

Highly heat‐resistant networked polymers consisting of isocyanurate moieties have been developed based on cyclotrimerization of isocyanates. To the polymerization system using methylene diphenyl 4,4′‐diisocyanate (MDI) as the main component, a series of aromatic monoisocyanates (p‐tolylisocyanate, p‐trifluoromethylphenylisocyanate, p‐tert‐butylphenylisocyanate, and p‐butylphenylisocyanate) were added with varying feed ratio [MDI]0:[monoisocyanate]0 to achieve successful control of flexibility of thecorresponding networked polymers without serious deterioration of the thermal stability.