HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
N,N-diethyl-m-toluamide → Urea Urethane
Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|---|---|---|
| Edukt | N,N-diethyl-m-toluamide | HCID 4284 | — |
| Edukt | Zytron | HCID 9299 | — |
| Edukt | Sodium Hydroxide | HCID 14798 | — |
| Edukt | 1,3-Bis(1-isocyanato-1-methylethyl)benzene | HCID 17719 | — |
| Lösungsmittel | Water | HCID 962 | — |
| Lösungsmittel | Ethyl Acetate | HCID 8857 | — |
| Produkt | Urea Urethane | HCID 21585015 | — |
Reaktionsschritte
143.1 g of Rucoflex XS-5570-55, 154.4 g of Rucoflex S-1011-55, 9.0 g of MPdiol and 6.7 g of DMPA are reacted with 73.2 g of TMXDI and 25.2 d of HDI at 80° C. for 3 hours to prepare a prepolymer. The prepolymer is then dispersed in a solution of 3.0 NaOH and 2.75 g of EA in 736 g of water. After 5 minutes, a solution of 2.7 g of EDA and 3.06 g of DETA in 50.0 g of water is added to form a aqueous poly(urethane/urea) dispersion. A finely divided dispersion having solids content of 35.2% and a pH of 7.85 is obtained.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US05703158 |
| Quelldatensatz | uspto-grants-1997_12 |
| ORD ID | ord-278dd2f947f74721b09b9fbac89b2b03 |
| Quellennotiz | uspto-grants-1997_12 |