Preparation of novel thermally stable polyurea by the cationic ring-opening isomerization polymerization of polycyclic pseudourea

Macromolecules

Volumn 31, Issue 20, 1998, Pages 6822-6827

  Miyamoto, Masatoshi ^a   Takashima, Yoshinori ^a   Kimura, Yoshiharu ^a  

^a KYOTO INSTITUTE OF TECHNOLOGY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

ACIDS; CATIONIC POLYMERIZATION; DIFFERENTIAL SCANNING CALORIMETRY; ISOMERIZATION; ORGANIC POLYMERS; RING OPENING POLYMERIZATION; TEMPERATURE; THERMODYNAMIC STABILITY; THERMOGRAVIMETRIC ANALYSIS;

DIHYDROBENZIMIDAZO OXAZOLE; DILUTION; POLYCYCLIC PSEUDOUREA; POLYUREA;

UREA;

EID: 0032491086     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma980715a     Document Type: Article

References (12)

1. Miyamoto, M.; Watanabe, T.; Kimura, Y. Macromol. Rapid Commun. 1997, 18, 897.
2. Miyamoto, M.; Watanabe, T.; Kimura, Y. Macromol. Chem. Phys., in press.
3. Crank, G.; Mursyidi, A. Aust. J. Chem. 1982, 35, 775.
4. Takeda, K.; Tsugoyama, K.; Takayanagi, H.; Shirokami, R.; Takeura, M.; Ogura, H. Chem. Pharm. Bull. 1989, 37, 2334.
5. Parrodi, C. A.; Quintero-Cortes, L.; Sandoval-Ramirez, J. Synth. Commun. 1996, 26, 3323.
6. Korach, M.; Nielsen, D. R.; Riedeout, W. H. J. Am. Chem. Soc. 1960, 82, 4328.
7. Benigni, F.; Trevisan, L. German Patent DE 75-251720; Chem. Abstr. 1977, 87, 55454.
8. Benigni, F.; Trevisan, L. German Patent DE 75-251720; Chem. Abstr. 1977, 87, 55454.
9. Hayward, R. J.; Htay, M.; Meth-Cohn, O. Chem. Ind. 1977, 21, 373.
10. Miyamoto, M.; Amii, H.; Aoi, K.; Saegusa, T. Macromolecules 1994, 26, 1474.
11. Kobayashi, S.; Saegusa, T. Ring-Opening Polymerization; Elsevier Applied Science Publishers: New York, 1985; Vol. 2, Chapter 11.
12. The assignment for signals h-k were done in consideration of the assignment for N-methyl-3,4-dihydro-2H-benzo[4,5]-imidazo[2,1-b]oxazinium trifluoromethanesulfonate, which was prepared by the reaction of 3,4-dihydro-2H-benzo[4,5]-imidazo[2,1-b]oxazine, a homologue of DBO having a [4.3.0] bicyclic ring system, with MeOTf as a stable compound. The detailed data will be indicated in our forthcoming manuscript. Miyamoto, M.; Tomari, K.; Kimura, Y. Macromol. Chem. Phys., in press.