发明名称 |
Preparation of unsaturated ketones from acetone and paraformaldehyde (II) |
摘要 |
Unsaturated ketones are produced from ketones and paraformadehyde under mild reaction conditions utilizing a catalyst comprising a halogen acid salt of a secondary amine and a nonsoluble solid oxide of an element selected from groups IB, IIIA, IVA, IVB, VA, VB, VIB and VIII of the periodic table. Temperatures of 120-150 and pressures of 700-1200 kpa are preferred; by-products may include di-unsaturated ketones such as divinyl ketone. Unsaturated ketones such as methyl vinyl ketone are useful in imparting ultraviolet sensitivity to plastics which enhances degradability.
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申请公布号 |
US5004839(A) |
申请公布日期 |
1991.04.02 |
申请号 |
US19900508454 |
申请日期 |
1990.04.13 |
申请人 |
ARISTECH CHEMICAL CORPORATION |
发明人 |
PUGACH, JOSEPH;SALEK, JEFFREY S. |
分类号 |
B01J31/02;C07B61/00;C07C45/75;C07C49/203;C07C49/217 |
主分类号 |
B01J31/02 |
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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