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
Equilibrium Anionic Ring-Opening Polymerization of a Six-Membered Cyclosiloxazane
✍ Scribed by Brochon, Cyril; Mingotaud, Anne Françoise; Schappacher, Michèle; Soum, Alain
- Book ID
- 118188457
- Publisher
- American Chemical Society
- Year
- 2007
- Tongue
- English
- Weight
- 151 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0024-9297
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📜 SIMILAR VOLUMES
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
## Abstract The initiation and propagation reactions in anionic non‐equilibrium polymerization of octamethylcyclotetrasiloxane (D~4~) initiated by silazyl‐lithiums are investigated. It is found that: both the steric hindrance effect and the electronic effect of the substitutes on the Si atom Si inf