Aqueous compositions of fluorinated surfactants and methods of using the same
US8338517B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2008 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Oct 11, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/37
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Aqueous compositions comprising surfactant represented by a formula selected from the group consisting of:[Rf—(O)t—CHF—(CF2)n—COO−]iXi+;{[Rf—(O)t—CQH—CF2—O]m—R—COO−}iXi+;{[Rf—(O)t—CQH—CF2—O]m—R—SO3−}iXi+; and[CF3CFH—O—(CF2)p—COO−]iXi+;wherein Rf represents a partially or fully fluorinated aliphatic group optionally interrupted with at least one oxygen atom; Q is selected from the group consisting of F and CF3; R is selected from the group consisting of alkylene and arylene; Xi+ represents a cation having a valence i, wherein i is 1, 2 or 3; t is 0 or 1; m is 1, 2, or 3; n is 0 or 1; and p is an integer from 1 to 6. The aqueous composition comprises a non-fluorinated polymer and is essentially free of fluoropolymers. Methods of coating a surface and an article having a surface in contact with the composition are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.