Fluorinated oligomers having pendant functional groups
Assignee3M Innovative Properties Company
InventorsZai-Ming Qiu, Miguel A. Guerra
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Abstract
Described herein is an oligomer according to formula I: (I) wherein Y is an anionic group selected from the group consisting of: sulfates, carboxylates, phosphate, phosphonate, and sulfonate, wherein each X1, X2, and X3 are independently selected from F, Cl, H, and CF3; R is a linking group; each Z1 and Z2 is independently selected from F and CF3; m is at least 2; and R1 and R2 are end groups, wherein the oligomer comprises substantially no pendant functional groups, except those selected from the group consisting of: sulfates, carboxylates, phosphate, phosphonate, and sulfonate.
Claims15
A composition comprising a compound, wherein the compound consists of end groups R1 and R2 and at least m repeating segments of the following structure:
- wherein Y is an anionic group selected from the group consisting of:
- sulfate, carboxylate, phosphate, phosphonate, and sulfonate, wherein each X1, X2, and X3 are independently selected from F, Cl, H, and CF3;
- R is a linking group;
- each Z1 and Z2 is independently selected from F and CF3;
- m is at least 2;
- wherein the compound comprises substantially no other anionic pendant functional groups, except those selected from the group consisting of:
- sulfate, carboxylate, phosphate, phosphonate, and sulfonate, wherein the compound has a number average molecular weight of no more than 10,000 grams/mole and an average number of anionic groups of greater than 2.
Dependencies are inferred from the claim text.