| 摘要 |
Polyols or polyisocyanates, or both, are treated to reduce aldehyde impurities before being reacted together to form a polyurethane. Polyols are treated by adding certain aminoalcohols to them, preferably in the presence of a tertiary amine catalyst. Polyisocyanates are treated by added certain nitroalkanes to them, also preferably in the presence of a tertiary amine catalyst. Polyurethanes made using the treated materials emit smaller quantities of aldehydes.
|
