Sulfonium organosulfonates
AssigneeThe Dow Chemical Company
InventorsGary R. Buske, Richard G. Pews
Life of this patent
Estimating the term…
Abstract
Monomeric and polymeric triarylsulfonium complex salts which may be prepared by contacting diarylsulfoxides or polymeric arylsulfoxides with aromatic compounds in the presence of an organosulfonic acid are described. An example is tris-(4-phenoxyphenyl)sulfonium methane sulfonate prepared by reaction of bis-(4-phenoxyphenyl)sulfoxide, diphenyl ether and methane sulfonic acid. The compounds demonstrate useful corrosion inhibiting properties.
Claims9
A triarylsulfonium complex salt corresponding to the formula:
- (A--Ph--.sub.2 S.sup.+ --PhB(Z.sup.-)
- wherein
- Ph is phenylene;
- A independently each occurrence is C.sub.1-4 alkyl or phenoxy;
- PhB is phenoxyphenyl;
- and
- Z.sup.- is a counterion selected from the group consisting of RSO.sub.3.sup.-, BF.sub.4.sup.-, PF.sub.6.sup.-, AsF.sub.6.sup.- and SbF.sub.6.sup.- where R is lower alkyl, phenyl or tolyl.
A polymeric triarylsulfonium complex salt corresponding to the formula ##STR5## wherein Ph is phenylene, diphenylene or oxydiphenylene;
- Z.sup.- is a counterion selected from the group consisting of RSO.sub.3.sup.-, BF.sub.4.sup.-, PF.sub.6.sup.-, AsF.sub.6.sup.- and SbF.sub.6.sup.- where R is lower alkyl, phenyl or tolyl;
- A and B independently each occurrence are hydrogen, C.sub.1-4 alkyl, phenyl, alkoxy or phenoxy;
- m is an integer greater than or equal to zero, equal to the number of sulfoxide moieties in the complex salt;
- and
- n is an integer greater than or equal to one, equal to the number of sulfonium moieties in the complex salt;
- provided that m+n is from about 2 to about 30 and the ratio of m/n is from about 95/5 to about 10/90.
A polymeric triarylsulfonium complex salt corresponding to the formula ##STR6## wherein Ph is oxydiphenylene;
- Z.sup.- is a counterion selected from the group consisting of RSO.sub.3.sup.-, BF.sub.4.sup.-, PF.sub.6.sup.-, AsF.sub.6.sup.- and SbF.sub.6.sup.- where R is lower alkyl, phenyl or tolyl;
- A and B independently each occurrence are hydrogen, C.sub.1-4 alkyl, phenyl, alkoxy or phenoxy;
- m is an integer greater than or equal to zero, equal to the number of sulfoxide moieties in the complex salt;
- and
- n is an integer greater than or equal to one, equal to the number of sulfonium moieties in the complex salt;
- provided that m+n is from about 2 to about 30.
Dependencies are inferred from the claim text.