Highly repellent carpet protectants
US6790905B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2001 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Aug 30, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2893
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Carpet protectants comprising an aqueous dispersion comprisingA. a partially fluorinated urethane polymer having at least one urea linkage, which compound is the product of the reaction of: (1) at least one organic polyisocyanate containing at least three isocyanate groups; (2) at least one fluorochemical compound which contains per molecule (a) a single functional group having one or more Zerewitinoff hydrogen atoms and (b) at least two carbon atoms, each of which is attached to at least two fluorine atoms; and (3) water in an amount sufficient to react with from about 5% to about 60% of the isocyanate groups in said polyisocyanate;B. a non-fluorinated cationic surfactant; andC. a non-fluorinated nonionic surfactant are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.