| 摘要 |
E 34470 Manufacture of Polyurethane Foam Process for the manufacture of flexible polyurethane foams based on methylene diphenyl isocyanates and isocyanate - reactive compounds, which comprises reacting methylene diphenyl isocyanates with one or more isocyanate - reactive compounds selected from polyols and polyamines and with water. MDI based foams with a broader range of properties are obtained without the necessity for halocarbon blowing agents. |
