Substituent effect on cationic ring-opening polymerization behavior of seven-membered cyclic carbonates
โ Scribed by Jyuhou Matsuo; Fumio Sanda; Takeshi Endo
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 161 KB
- Volume
- 201
- Category
- Article
- ISSN
- 1022-1352
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๐ SIMILAR VOLUMES
Cationic ring-opening polymerization behavior of a seven-membered cyclic sulfite ( 1) was examined. 1 was prepared by the reaction of 1,4-butanediol with SOCl 2 in 58% yield. The cationic polymerization of 1 was carried out at 0, 25, 60, or 100ะC with trifluoromethanesulfonic acid (TfOH), methyl tri
Anionic ring-opening polymerization of a seven-membered cyclic carbonate, 1,3-dioxepan-2-one ( 1), was carried out to observe that the higher the polymerization temperature and lower the initial monomer concentration were, the lower the yield and molecular weight, and wider the molecular weight dist
The cationic ring-opening polymerization of six-membered cyclic pseudoureas, 2-(1-pyrrolidinyl)-( 2a) and 2-morpholino-5,6-dihydro-4H-1,3-oxazine ( 2b), was examined, which proceeded in two different ways, depending on the nature of initiator. The polymerization of 2 with methyl p-toluenesulfonate o
Cationic copolymerization of seven-membered cyclic sulfite, 1,3,2-dioxathiepane-2-oxide ( 1) and oxetane ( 2) in one-shot feeding was carried out to obtain the corresponding copolymer. When a mixture of equimolar amount of 1 and 2 reacted at 0ะC in the presence of methyl trifluoromethanesulfonate (T