发明名称 |
Amide and hydroxymethyl functionalized polyethers as thermoplastic barrier resins |
摘要 |
Polyethers having improved barrier to oxygen are normally solid, thermoplastic polyethers having aromatic ether repeating units in their backbones and pendent hydroxyl moieties and pendent amido, N-substituted amido and/or hydroxyalkyl moieties. Such polyethers are prepared by reacting diglycidyl ethers of dihydric aromatic compounds such as diglycidyl ether of bisphenol A with dihydric phenols having pendent amido, N-substituted amido and/or hydroxyalkyl moieties such as 2,2-bis(4-hydroxyphenyl)acetamide and 3,5-dihydroxybenzamide.
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申请公布号 |
US5115075(A) |
申请公布日期 |
1992.05.19 |
申请号 |
US19900520689 |
申请日期 |
1990.05.08 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
BRENNAN, DAVID J.;WHITE, JERRY E.;HAAG, ANTHONY P.;KRAM, SHARI L. |
分类号 |
C07C235/34;C07D303/24;C08G59/62 |
主分类号 |
C07C235/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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