发明授权
- 专利标题: TWO STEP PREPARATION OF RANDOM POLYOXADIAZOLE COPOLYMER AND ARTICLES RESULTING THEREFROM
- 专利标题(中): 统计聚二共聚物在两步,第由其制成的研制
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申请号: EP07756011.8申请日: 2007-04-26
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公开(公告)号: EP2013262B1公开(公告)日: 2012-02-01
- 发明人: LEE, Kiu-Seung , SMITH, JR., Harry, Lee
- 申请人: E.I. DU PONT DE NEMOURS AND COMPANY
- 申请人地址: 1007 Market Street Wilmington, DE 19898 US
- 专利权人: E.I. DU PONT DE NEMOURS AND COMPANY
- 当前专利权人: E.I. DU PONT DE NEMOURS AND COMPANY
- 当前专利权人地址: 1007 Market Street Wilmington, DE 19898 US
- 代理机构: Morf, Jan Stefan
- 优先权: US414959 20060501
- 国际公布: WO2007133408 20071122
- 主分类号: C08G73/00
- IPC分类号: C08G73/00 ; C08G73/08 ; C08G73/22
摘要:
In a preparation of random polyoxadiazole copolymer by reaction of a mixture of oleum, hydrazine sulfate, terephthalic acid, and isophthalic acid, the improvement requires the addition of oleum in more than one step.
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