| Autor: |
Ye.V. Stovbun, S.M. Baturin, V.P. Lodygina |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Polymer Science U.S.S.R.. 32:1175-1180 |
| ISSN: |
0032-3950 |
| DOI: |
10.1016/0032-3950(90)90174-5 |
| Popis: |
The kinetics of urethane formation on reaction of oligobutadienediols with 2,4-toluylene diisocyanate at an [NCO]:[OH] ratio 2:1 (prepolymer synthesis) is studied, and it is shown that a change in the reactivity of oligobutadienediols of different MM can be explained by different ratios of the auto-associated and π-bonded OH groups. The molecular mass parameters of the prepolymers and their changes during reaction and the fragmentary composition of the products are studied. The experimental data are treated by a mathematical simulation method, and a correlation is obtained between the prepolymer composition and the kinetic constants. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
