发明授权
US06521461B2 Fluoroalkene-nucleophile adducts for analysis and removal of fluoroalkenes
失效
用于分析和除去氟代烯烃的氟烯烃 - 亲核试剂加合物
- 专利标题: Fluoroalkene-nucleophile adducts for analysis and removal of fluoroalkenes
- 专利标题(中): 用于分析和除去氟代烯烃的氟烯烃 - 亲核试剂加合物
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申请号: US09881494申请日: 2001-06-14
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公开(公告)号: US06521461B2公开(公告)日: 2003-02-18
- 发明人: Mark Eugene Mueller , Donald Frederick Hagen , Yuri Cheburkov , Fred Lynn DeRoos , Glenn Delmont Johnson , John Stephen Marhevka , Venkateswarlu Pothapragada
- 申请人: Mark Eugene Mueller , Donald Frederick Hagen , Yuri Cheburkov , Fred Lynn DeRoos , Glenn Delmont Johnson , John Stephen Marhevka , Venkateswarlu Pothapragada
- 主分类号: G01N3300
- IPC分类号: G01N3300
摘要:
A method for removing one or more fluorinated alkenes from a fluid comprises the step of contacting the fluid with an N-, S-, or P-containing nucleophile for a time sufficient to form an N-, S-, or P-containing nucleophile-fluoroalkene adduct. The nucleophile, and therefore the adduct, can be covalently bonded, coated or sorbed to a particulate support which can be enmeshed in a porous, fibrous web. In a preferred embodiment the fluorinated alkene can have the formula wherein A=F or Rf; X=H, F, Cl, Rf, or YRf; Z= H, F, Cl, or Rf; and Y=O, N, or S; with the proviso that at least one A=F, and at most one of Z and X is H; wherein each Rf is independently selected from the group consisting of highly fluorinated or perfluorinated alkyl groups; and a combination of any two Rf groups can be linked to form a cyclic structure. The Rf alkyl chains may contain from 1-20 carbon atoms, with 1-12 carbon atoms preferred. The Rf alkyl chains may be straight, branched, or cyclic. Preferably, Rf is CF3, C2F5, or C3F7.