| 摘要 |
Polyether polyol having an average nominal hydroxyl functionality of 2-6, a number average equivalent weight of 500-5000, an unsaturation level of less than 0.03 meq/g, comprising 0.01-0.5% by weight of a compound selected from ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, glycerol, butanediol and mixtures thereof. Prepolymers and polyurethane foams thereof are claimed as well |
