Partially fluorinated polysulfinic acids and their salts
Assignee3M Innovative Properties Company
InventorsZai-Ming Qiu, Gregg D. Dahlke, Tatsuo Fukushi, Werner M. Grootaert, Miguel A. Guerra
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Abstract
Described herein is a composition comprising a fluorinated polysulfinic acid or a salt thereof having the following formula (I): wherein X1, X2, and X3 are independently selected from H, F, Cl, Br, I, CF3, and CH3 and wherein at least one of X1, X2, or X3 is H; R1 is a linking group; Z1 and Z2 are independently selected from Br, Cl, I, F, CF3, and a perfluorinated alkyl group; M is a cation; p is 0 or 1; and n is at least 2. Also described is a method of making the partially fluorinated polysulfinic acid or salt thereof.
Claims19
A composition comprising the following formula (I):
- wherein X1, X2, and X3 are all H;
- R1 is a perfluorinated alkylene;
- Z1 and Z2 are independently selected from Br, Cl, I, and F, CF3, and a perfluorinated alkyl group;
- M is a cation;
- p is 0 or 1;
- and n is at least 2.
A method for making a composition comprising:
- oligomerizing a halofluoroalkene monomer, CX7X9═CX8—(R3)p—CZ5Z6—Y, with a sulfinating agent to produce the composition of formula (I),
- wherein X7, X8, and X9 are independently selected from H, F, Cl, Br, I, CF3, and CH3, and wherein at least one of X7, X8, and X9 is H;
- and R3 is a linking group;
- Z5 and Z6 are independently selected from Br, Cl, I, F, CF3, and a perfluoroalkyl group;
- p is 0 or 1;
- and Y is selected from I, Br, and Cl.
Dependencies are inferred from the claim text.