发明授权
US06809172B2 Polyester polyols and the use of polyester for producing PUR cast elastomers that have an improved resistance to hydrolysis
失效
聚酯多元醇和聚酯用于生产具有改进的抗水解性的PUR铸塑弹性体
- 专利标题： Polyester polyols and the use of polyester for producing PUR cast elastomers that have an improved resistance to hydrolysis
- 专利标题（中）： 聚酯多元醇和聚酯用于生产具有改进的抗水解性的PUR铸塑弹性体
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申请号： US10220250申请日： 2002-08-29
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公开(公告)号： US06809172B2公开(公告)日： 2004-10-26
- 发明人: James-Michael Barnes , Michael Schneider , Andreas Hoffmann
- 申请人： James-Michael Barnes , Michael Schneider , Andreas Hoffmann
- 优先权： DE10010047 20000302
- 主分类号： C08G1842
- IPC分类号： C08G1842
摘要：
The polyester polyols according to the invention with an average equivalent weight in the range from 200 to 4,000, which were prepared by reacting &agr;,&ohgr;-dicarboxylic acids with butane 1,4-diol, hexane 1,6-diol, propane 1,3-diol or pentane 1,5-diol and with polyols having 3 to 6 hydroxyl groups, are used for the preparation of PUR pourable elastomers with improved resistance to hydrolysis.
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