Research Article
Reactions of N,N′-bis(2-hydroxyethyl)oxalamide with Ethylene Carbonate and Use of the Obtained Products as Components of Polyurethanes Foams
Table 2
Percentage of by-products in reaction products of BHEOA with excess of EC.
| Entry* | Initial molar | Percentage of OXON in post-reaction | Percentage of glycols in postreaction mixtures (wt.-%) |
ratio | Mixtures (wt.-%) | | | |
| 1. | 1 : 2 | 0 | 0 | 0 | 0 | 2. | 1 : 2 | 5.49 | 0 | 0 | 0 | 3. | 1 : 2** | 18.48 | 0 | 0 | 0 | 4. | 1 : 2 | 4.74 | 0 | 0 | 2.26 | 5. | 1 : 4 | 0 | 2.15 | 0 | 0 | 6. | 1 : 6 | 0 | 1.41 | 3.41 | 0 | 7. | 1 : 6 | 0 | 2.75 | 3.49 | 2.35 | 8. | 1 : 10 | 1.75 | 0 | 0 | 1.47 | 9. | 1 : 10 | 2.65 | 0 | 0 | 2.45 |
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according to Table 1, was used as catalyst, glycol, glycol, glycol.
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