Methods of making fluorinated ethers, fluorinated ethers, and uses thereof
申请人:3M Innovative Properties Company
公开号:US07988877B2
公开(公告)日:2011-08-02
A method of making a fluorinated ether includes combining, in a polar aprotic solvent: a fluorinated alcohol represented by the formula X—Rf1CH2OH, and a fluorinated sulfonate ester represented by the formula Rf2CH2OS(═O)2Rf3, and base; and obtaining a fluorinated ether represented by the formula Y—Rf1CH2OCH2Rf2—Y. Rf1 is selected from perfluorinated C1-C10 alkylene groups having from 1 to 10 carbon atoms and partially fluorinated C1-C10 alkylene groups, and derivatives thereof having catenated heteroatom(s). X represents H, F, or an HOCH2— group. Rf2 is selected from perfluorinated C1-C10 alkyl groups and partially fluorinated C1-C10 alkyl groups, and derivatives thereof having catenated heteroatom(s). Rf3 is a C1-C4 alkyl group. Y represents H, F, or an Rf2CH2OCH2— group. A variant method, useful for preparing symmetric fluorinated ethers, is also disclosed. The present disclosure also provides fluorinated ethers preparable according to the methods. Use of fluorinated ethers in various applications is also disclosed.
METHODS OF USING HYDROFLUOROETHERS AS HEAT TRANSFER FLUIDS
申请人:FLYNN Richard M.
公开号:US20110100601A1
公开(公告)日:2011-05-05
An apparatus is provided that includes a device and a mechanism for heat transfer. The mechanism includes a hydrofluoroether heat-transfer fluid wherein the heat transfer fluid is represented by the following structure:
Y—R
f
—CH
2
OCH
2
R
f
—Y
wherein R
f
may be the same or different and is, independently, selected from the group consisting of perfluorinated alkylene groups which may be linear, cyclic, or branched having from 1 to 10 carbon atoms, partially fluorinated alkylene groups having from 1 to 10 carbon atoms, and derivatives thereof wherein one or more carbon atoms are replaced by catenated nitrogen or oxygen heteroatoms, wherein each R
f
contains at most one hydrogen atom, wherein Y represents H, F, or an R
f
CH
2
OCH
2
— group, and wherein the total number of carbon atoms in the molecule is at least 6. A method of transferring heat including the device and the provided heat-transfer fluid is also provided
Methods of using hydrofluoroethers as heat transfer fluids
申请人:3M Innovative Properties Company
公开号:US08261560B2
公开(公告)日:2012-09-11
An apparatus is provided that includes a device and a mechanism for heat transfer. The mechanism includes a hydrofluoroether heat-transfer fluid wherein the heat transfer fluid is represented by the following structure:
Y—Rf—CH2OCH2Rf—Y
wherein Rf may be the same or different and is, independently, selected from the group consisting of perfluorinated alkylene groups which may be linear, cyclic, or branched having from 1 to 10 carbon atoms, partially fluorinated alkylene groups having from 1 to 10 carbon atoms, and derivatives thereof wherein one or more carbon atoms are replaced by catenated nitrogen or oxygen heteroatoms, wherein each Rf contains at most one hydrogen atom, wherein Y represents H, F, or an RfCH2OCH2— group, and wherein the total number of carbon atoms in the molecule is at least 6. A method of transferring heat including the device and the provided heat-transfer fluid is also provided