发明名称 |
AN IMPROVED METHOD TO REDUCE FUEL VAPOR EMISSIONS |
摘要 |
Hydrocarbon emissions from fuel reservoirs, particularly those associated with motor vehicles, are abated by contacting a vented hydrocarbon fuel vapor stream from the reservoirs with a polymeric adsorbent derived from a macroporous or macroreticular copolymer of at least one monovinylidene aromatic monomer and a crosslinking monomer. The macroporous copolymers are converted into suitable adsorbents by post-polymerization crosslinking in a swollen state in the presence of a Friedel-Crafts catalyst. The resulting adsorbent has improved hydrocarbon adsorption capacity relative to conventional activated carbon adsorbents. |
申请公布号 |
WO9405417(A1) |
申请公布日期 |
1994.03.17 |
申请号 |
WO1993US08029 |
申请日期 |
1993.08.26 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
GOLTZ, H., ROBERT;DEMOPOLIS, TOM, N. |
分类号 |
B01J20/26;C08F8/24;F02M25/08;(IPC1-7):B01J20/26 |
主分类号 |
B01J20/26 |
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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