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
190.8 g of Rucoflex XS-5570-55, 102.9 g of Rucoflex S-1011-55 and 6.7 g of DMPA are reacted with 73.2 g of TMXDI in the presence of the T-12 at 85° C. for 4 hours to prepare a prepolymer. 3.4 g of sodium hydroxide and 1.83 g of EA are dissolved in 660 g of water, and then the prepolymer is dispersed by adding the aqueous solution containing NaOH and EA. After 5 minutes, a solution of 4.08 g of DETA in 51 g of water is added and stirring is continued for 15 minutes to form the aqueous poly(urethane/urea) dispersion. A finely divided dispersion having a solids content of 34.9% and a pH of 7.95 is obtained.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US05703158 |
| Quelldatensatz | uspto-grants-1997_12 |
| ORD ID | ord-8582a2b094ba4e238e32e6d94d5b52b3 |
| Quellennotiz | uspto-grants-1997_12 |