Urea-aldehyde condensates and melamine derivatives comprising fluorochemical oligomers
AssigneeMinnesota Mining and Manufacturing Company
InventorsRudolf J. Dams, Johan E. De Witte
Life of this patent
Estimating the term…
Abstract
Fluorochemical compositions comprising fluorinated compounds, wherein the fluorinated compound comprises fluorochemical oligomeric portion bonded through --O--, --S--, --NH--, or CO.sub.2 -- to a moiety comprising a group derived from an amino resin. Also disclosed are fluorochemical compositions in the form of fluorochemical liquid dispersions and methods for preparing substrates treated with such compositions. Substrates so treated exhibit particularly durable and abrasion-resistant oil and water repellent properties.
Claims31
A fluorochemical composition comprising one or more fluorinated compounds, each of the latter comprising:
- a fluorochemical oligomeric portion comprising an aliphatic backbone with a plurality of fluoroaliphatic groups attached thereto, each fluoroaliphatic group having a fully fluorinated terminal group and each independently linked to a carbon atom of the aliphatic backbone through an organic linking group, wherein the oligomeric portion is bonded through a linking group selected from the group consisting of --O--, --S--, --NH--, and --CO.sub.2 --, to a moiety comprising a group derived from an amino resin.
A compound resulting from a process comprising the steps of
- (a) oligomerizing a fluoroaliphatic-group-containing fluorochemical olefinic monomer and optionally one or more non-fluorinated olefinic monomers in the presence of an end-capping agent that comprises a thiol group and a functional group capable of reacting with an amino resin, in order to provide a functionalized fluorochemical oligomer containing a plurality of fluoroaliphatic groups;
- (b) reacting the functionalized fluorochemical oligomer from step (a) with an an amino resin.
Dependencies are inferred from the claim text.