发明授权
US4140722A Oxidation of substituted p-xylenes to substituted terephthalaldehydes
失效
取代的对二甲苯氧化成取代的对苯二甲醛
- 专利标题: Oxidation of substituted p-xylenes to substituted terephthalaldehydes
- 专利标题(中): 取代的对二甲苯氧化成取代的对苯二甲醛
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申请号: US779432申请日: 1977-03-21
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公开(公告)号: US4140722A公开(公告)日: 1979-02-20
- 发明人: James E. Williams , Kenneth E. Simmons
- 申请人: James E. Williams , Kenneth E. Simmons
- 申请人地址: NY Rochester
- 专利权人: Eastman Kodak Company
- 当前专利权人: Eastman Kodak Company
- 当前专利权人地址: NY Rochester
- 主分类号: B01J23/31
- IPC分类号: B01J23/31 ; B01J37/02 ; C07C45/36 ; C07C45/02
摘要:
Substituted terephthalaldehydes are produced by the vapor phase oxidation of similarly substituted p-xylenes in the presence of a catalyst mixture of tungsten in the form of an oxide or silicotungstic acid, molybdenum in the form of an oxide and optionally bismuth in the form of an oxide.
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