Preparation of polytrimethylene ether glycol and copolymers thereof
申请人:Harmer Andrew Mark
公开号:US20070066854A1
公开(公告)日:2007-03-22
The present invention relates to a process comprising using ionic liquids for the polycondensation of 1,3-propanediol reactants to produce polytrimethylene ether glycol and copolymers thereof.
Hydrofluoroalkanesulfonic acids from fluorovinyl ethers
申请人:Junk P. Christopher
公开号:US20060276670A1
公开(公告)日:2006-12-07
Hydrofluoroalkanesulfonates of the general formula R—O—CXH—CX
2
—SO
3
M, where R is selected from the group consisting of alkyl groups, functionalized alkyl groups, and alkenyl groups; X is selected from the group consisting of hydrogen and fluorine with the proviso that at least one X is fluorine; and M is a cation, are made by reacting fluorovinyl ether with aqueous sulfite solution. Organic onium hydrofluoroalkanesulfonates are useful as ionic liquids and photoacid generators.
Compositions of matter useful as ionic liquids of the formula Z
+
A
−
, wherein Z
+
is a cation selected from the group consisting of pyridinium, pyridazinium, pyrimidinium, pyrazinium, imidazolium, pyrazolium, thiazolium, oxazolium, triazolium, and phosphonium, ammonium cations with specified substituents, and A
−
is selected from the group consisting of the following three anions wherein R
11
, R
12
and R
13
are as specified.
R
11
—CHF—CF
2
—SO
3
−
Formula I
R
12
—CF
2
—CF
2
—SO
3
−
Formula II
(R
13
—CHF—CF
2
—SO
2
)
2
N
−
Formula III