Fluorochemical biuret compositions and fibrous substrates treated therewith

• US 4,668,406 A
• Filed: 04/02/1984
• Issued: 05/26/1987
• Est. Priority Date: 04/02/1984
• Status: Expired due to Term

• Current Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Original Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Inventors: Chang, John C.
• Primary Examiner(s): Clingman, A. Lionel
• Application Number:
  US06/595,901
• Time in Patent Office: 1,149 Days
• Field of Search: 252/8.8, 252/8.75, 528/70, 427/393.4, 560/158
• US Class Current: 252/8.62
• CPC Class Codes: C07C 275/62 Y being a nitrogen atom, e.g. biuret
• CPC Class Codes: D06M 13/432 Urea, thiourea or derivatives thereof, e.g. biurets; Urea-inclusion compounds; Dicyanamides; Carbodiimides; Guanidines, e.g. dicyandiamides
• CPC Class Codes: Y10T 442/2172 Also specified as oil repellent
• CPC Class Codes: Y10T 442/2189 Fluorocarbon containing
• CPC Class Codes: Y10T 442/2246 Nitrogen containing
• CPC Class Codes: Y10T 442/227 Fluorocarbon containing

Abstract

Fluorochemical biurets containing one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, the radicals and moieties bonded together by hetero atom-containing or organic linking groups are provided. These fluorochemical biurets are useful in the form of aqueous dispersions or emulsions or organic solutions in the treatment of fibrous substrates, such as textile fibers, to impart oil and water repellency.

Claims

1. Fluorochemical biuret compositions comprising fluorochemical biuret compounds of mixtures of fluorochemical biuret compounds, each biuret compound having one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, ##STR32## said radicals bonded to the biuret moieties by hetero atom-containing or organic linking groups, which linking groups are free of active hydrogen atoms, with the proviso that the fluorochemical biuret compounds contain one or more organic radicals having at least one acid or amino moiety or are salts formed from the compounds containing said acid or amino moiety or that said fluorochemical biuret compounds contain at least three biuret moieties.

2. A fluorochemical composition comprising a blend of the composition of claim 1 and a fluoroaliphatic radical-containing poly(oxyalkylene) having one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated carbon atoms and one or more poly(oxyalkylene) moieties, said radicals and moieties bonded together by hetero atom-containing or organic linking groups.

3. A fiber finish comprising an organic solution or aqueous emulsion of the fluorochemical biuret composition of claim 1.

4. Fluorochemical biuret compositions comprising fluorochemical biuret compound or mixtures of fluorochemical biuret compounds, each biuret compound having one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, ##STR33## said radicals bonded to the biuret moieties by hetero atom-containing or organic linking groups, which linking groups are free of active hydrogen atoms, with the proviso that said fluorochemical biuret compounds contain one or more organic radicals having at least one acid or amino moiety or are salts formed from the compounds containing said acid or amino moiety.

5. Fluorochemical biuret compositions comprising fluorochemical biuret compound or mixtures of fluorochemical biuret compounds, each biuret compound having one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, ##STR34## said radicals bonded to the biuret moieties by hetero atom-containing or organic linking groups, which linking groups are free of active hydrogen atoms, with the proviso that said fluorochemical biuret compounds contain at least three biuret moieities.