Mixed fluorochemical hydrocarbon condensates to impart oil and water repellency to a substrate
US6440321B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1999 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Sep 17, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2200/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A fluorochemical composition to impart water repellency and/or oil repellency to a substrate, the composition comprising one or more condensates of (i) a methylolated amine or a C1-C4 alkoxylated derivative thereof, (ii) a hydrocarbon compound represented by formula (II) and (iii) a fluorinated compound represented by formula (I):Rf—(X1)n—Z1  (I)wherein:Rf is a fluorinated aliphatic group; X1 is an organic divalent linking group; Z1 is selected from the group consisting of hydroxy, thiol, amide or acid groups; and n is 0 or 1; andRh—Z2  (II) wherein:Rh is a hydrocarbon group having at least 6 carbon atoms and optionally being substituted with 1 to 3 subsituents; Z2 is selected from the group consisting of hydroxy, thiol, amide or acid groups. The invention further provides a method of treatment of a substrate with the fluorochemical composition and a treated substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.