发明授权
US5284980A Block copolyethers via oxonium coupling of poly(tetramethylene ether) glycols 失效
通过聚(四亚甲基醚)二醇的氧杂偶联来嵌段共聚醚

Block copolyethers via oxonium coupling of poly(tetramethylene ether)
glycols
摘要:
Treatment of poly(tetramethylene ether) glycols with acid catalysts at elevated temperatures leads to a chain coupling with rapid increase in molecular weight. Various alcohols including diols and triols can be incorporated into poly(tetramethylene ether) glycol backbone with modified properties and performance.
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