| 摘要 |
<p>Cold-cured moulded polyurethane flexible foams having improved vibration damping properties are made by foaming in the presence of (1) a high molecular weight predominantly linear siloxane polyoxyalkylene block copolymer and (2) a solvent which is compatible with the block copolymer and which has a viscosity of3 to 100 cps and a surface tension between 15 and 60 dynes/cm. </p> |
