PROCESSES FOR SEPARATION OF FLUOROOLEFINS FROM HYDROGEN FLUORIDE BY AZEOTROPIC DISTILLATION
申请人:KNAPP JEFFREY P.
公开号:US20080051612A1
公开(公告)日:2008-02-28
The present disclosure relates to a process for separating a fluoroolefin from a mixture comprising hydrogen fluoride and fluoroolefin, comprising azeotropic distillation both with and without an entrainer. In particular are disclosed processes for separating any of HFC-1225ye, HFC-1234ze, HFC-1234yf or HFC-1243zf from HF.
Methods for making foams using blowing agents comprising unsaturated fluorocarbons
申请人:Creazzo Anthony Joseph
公开号:US20070100009A1
公开(公告)日:2007-05-03
Disclosed herein are blowing agents comprising fluorocarbons and/or hydrofluorocarbons useful in foamable compositions. Also disclosed are methods for forming a foam comprising the aforementioned blowing agents.
Blowing agents for forming foam comprising unsaturated fluorocarbons
申请人:Creazzo Anthony Joseph
公开号:US20070100010A1
公开(公告)日:2007-05-03
Disclosed herein are blowing agents comprising fluorocarbons and/or hydrofluorocarbons useful in foamable compositions. Also disclosed are methods for forming a foam comprising the aforementioned blowing agents.
Disclosed is a method for removing residue from a surface comprising: contacting the surface with a composition comprising at least one unsaturated fluorinated hydrocarbon selected from the group consisting of compounds having the formula E- or Z-R
1
CH═CHR
2
, wherein R
1
and R
2
are, independently, C
1
to C
6
perfluoroalkyl groups, or C
1
to C
6
hydrofluoroalkyl groups, and recovering the surface from the composition.
Disclosed is a method for removing residue from a surface comprising: contacting the surface with a composition comprising at least one unsaturated fluorinated hydrocarbon selected from the group consisting of compounds having the formula E- or Z—R
1
CH═CHR
2
, wherein R
1
and R
2
are, independently, C
1
to C
6
perfluoroalkyl groups, or C
1
to C
6
hydrofluoroalkyl groups, and recovering the surface from the composition.