首页>
外国专利>
Polyurethane elastomers and polyurea elastomers made using high functionality, low unsaturation level polyols prepared with double metal cyanide catalysts
Polyurethane elastomers and polyurea elastomers made using high functionality, low unsaturation level polyols prepared with double metal cyanide catalysts
展开▼
机译:使用由双金属氰化物催化剂制备的高官能度,低不饱和度的多元醇制得的聚氨酯弹性体和聚脲弹性体
展开▼
页面导航
摘要
著录项
相似文献
摘要
This invention relates to a method of fabricating an elastomer which comprises the steps of: (a) fabricating a polyol having a molecular weight of between about 400 and about 15,000 and having a level of end group unsaturation of no greater than 0.04 milliequivalents per gram of polyol, said polyol being fabricated in the presence of a double metal cyanide catalyst, (b) reacting said polyol with a polyisocyanate to produce an isocyanate-terminated prepolymer, and (e) reacting said isocyanate-terminated prepolymer with a chain extender in a mold in order to produce the elastomer. Also claimed is the elastomer produced by the above method utilizing a one-shot technique.
展开▼