Water-and oil-repellent, antistatic composition

• US 20030211320A1
• Filed: 06/11/2003
• Published: 11/13/2003
• Est. Priority Date: 12/29/1999
• Status: Active Grant

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Klun, Thomas P., Lamanna, William M., Thompson, Delton R.
• Granted Patent: US 6,784,237 B2
• Time in Patent Office: Days
• US Class Current: 428/375
• CPC Class Codes: C08K 5/0075 Antistatics
• CPC Class Codes: C08K 5/42 Sulfonic acids; Derivatives thereof
• CPC Class Codes: C09D 5/00 Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced electrically insulating plastics, resins or waxes H01B3/30; Filling pastes
• CPC Class Codes: D01F 1/09 for making electroconductive or anti-static filaments
• CPC Class Codes: D06M 13/236 containing halogen atoms
• CPC Class Codes: D06M 13/285 Phosphines; Phosphine oxides; Phosphine sulfides; Phosphinic or phosphinous acids or derivatives thereof
• CPC Class Codes: D06M 13/463 derived from monoamines
• CPC Class Codes: D06M 13/47 derived from heterocyclic compounds
• CPC Class Codes: D06M 15/277 containing fluorine
• CPC Class Codes: D06M 15/576 containing fluorine
• CPC Class Codes: D06M 2200/00 Functionality of the treatment composition and/or properties imparted to the textile material
• CPC Class Codes: D06M 2200/11 Oleophobic properties
• CPC Class Codes: D06M 2200/12 Hydrophobic properties
• CPC Class Codes: Y10S 524/91 Antistatic compositions
• CPC Class Codes: Y10T 428/23936 Differential pile length or surface
• CPC Class Codes: Y10T 428/2933 Coated or with bond, impregnation or core
• CPC Class Codes: Y10T 428/2967 Synthetic resin or polymer
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31511 Of epoxy ether
• CPC Class Codes: Y10T 428/3154 Of fluorinated addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31544 : Addition polymer is perhalogenated
• CPC Class Codes: Y10T 428/31551 : Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 442/2164 : Coating or impregnation specified as water repellent
• CPC Class Codes: Y10T 442/2189 : Fluorocarbon containing
• CPC Class Codes: Y10T 442/2238 : Fluorocarbon containing
• CPC Class Codes: Y10T 442/2246 : Nitrogen containing

Abstract

A water- and oil-repellent, antistatic composition comprises (a) at least one nonpolymeric ionic salt consisting of (i) at least one cation selected from the group consisting of monovalent metal cations, divalent metal cations, and organic onium cations, and (ii) at least one weakly coordinating anion, the conjugate acid of the anion having an acidity greater than or equal to that of a hydrocarbon sulfonic acid, and with the proviso that the anion is organic or fluoroorganic when the cation is a metal; (b) at least one fluorochemical repellency-imparting additive or repellent; and (c) at least one insulating material. The composition exhibits good antistatic and repellency characteristics.

Claims

1. A film comprising a composition comprising (a) at least one nonpolymeric ionic salt consisting of (i) at least one cation selected from the group consisting of monovalent metal cations, divalent metal cations, and organic onium cations and (ii) at least one weakly coordinating anion, the conjugate acid of said anion having an acidity greater than or equal to that of a hydrocarbon sulfonic acid, and with the proviso that said anion is organic or fluoroorganic when said cation is a metal;

(b) at least one fluorochemical repellent; and

(c) at least one insulating material selected from the group consisting of thermoplastic polymers, thermoset polymers, and reactive precursors thereof;

wherein said composition is prepared by forming a blend of components (a), (b), and (c).

2. A molded or blown article comprising a composition comprising (a) at least one nonpolymeric ionic salt consisting of (i) at least one cation selected from the group consisting of monovalent metal cations, divalent metal cations, and organic onium cations and (ii) at least one weakly coordinating anion, the conjugate acid of said anion having an acidity greater than or equal to that of a hydrocarbon sulfonic acid, and with the proviso that said anion is organic or fluoroorganic when said cation is a metal;

(b) at least one fluorochemical repellent; and

(c) at least one insulating material selected from the group consisting of thermoplastic polymers, thermoset polymers, and reactive precursors thereof;

wherein said composition is prepared by forming a blend of components (a), (b), and (c).

3. A process for preparing a water- and oil-repellent, antistatic composition comprising the steps of (a) combining (i) at least one nonpolymeric ionic salt consisting of at least one cation and at least one anion, said cation being selected from the group consisting of monovalent metal cations, divalent metal cations, and organic onium cations, and said anion being a weakly coordinating anion, the conjugate acid of said anion having an acidity greater than or equal to that of a hydrocarbon sulfonic acid, and with the proviso that said anion is organic or fluoroorganic when said cation is a metal, (ii) at least one fluorochemical repellent, and (iii) at least one thermoplastic polymer;

and (b) melt processing the resulting combination.

4. The process of claim 3 wherein either said ionic salt or said fluorochemical repellent is combined with said thermoplastic polymer, and the other is topically applied to the surface of the resulting melt-processed combination.

5. A process for preparing a water- and oil-repellent, antistatic composition comprising the steps of (a) combining (i) at least one nonpolymeric ionic salt consisting of at least one cation and at least one anion, said cation being selected from the group consisting of monovalent metal cations, divalent metal cations, and organic onium cations, and said anion being a weakly coordinating anion, the conjugate acid of said anion having an acidity greater than or equal to that of a hydrocarbon sulfonic acid, and with the proviso that said anion is organic or fluoroorganic when said cation is a metal, (ii) at least one fluorochemical repellent, and (iii) at least one thermosetting polymer or ceramer or the reactive precursors of said polymer or ceramer;

and (b) allowing the resulting combination to cure.

6. A process for preparing a water- and oil-repellent, antistatic composition comprising the step of applying a topical treatment composition to at least a portion of at least one surface of at least one insulating material, said topical treatment composition comprising (a) at least one nonpolymeric ionic salt consisting of at least one cation and at least one anion, said cation being selected from the group consisting of monovalent metal cations, divalent metal cations, and organic onium cations, and said anion being a weakly coordinating anion, the conjugate acid of said anion having an acidity greater than or equal to that of a hydrocarbon sulfonic acid, and with the proviso that said anion is organic or fluoroorganic when said cation is a metal;

and (b) at least one fluorochemical repellent.

7. The process of claim 6 wherein a first topical treatment composition comprises said ionic salt, a second topical treatment composition comprises said fluorochemical repellent, and said first and second topical treatment compositions are sequentially applied to said portion of said surface.

8. A process for preparing a water- and oil-repellent, antistatic composition comprising the steps of (a) dissolving (i) at least one nonpolymeric ionic salt consisting of at least one cation and at least one anion, said cation being selected from the group consisting of monovalent metal cations, divalent metal cations, and organic onium cations, and said anion being a weakly coordinating anion, the conjugate acid of said anion having an acidity greater than or equal to that of a hydrocarbon sulfonic acid, and with the proviso that said anion is organic or fluoroorganic when said cation is a metal, (ii) at least one fluorochemical repellent, and (iii) at least one insulating material in at least one solvent;

(b) casting or coating the resulting solution on at least one substrate; and

(c) allowing evaporation of said solvent.

9. A process for preparing a water- and oil-repellent, antistatic composition comprising the steps of (a) combining (i) at least one nonpolymeric ionic salt consisting of at least one cation and at least one anion, said cation being selected from the group consisting of monovalent metal cations, divalent metal cations, and organic onium cations, and said anion being a weakly coordinating anion, the conjugate acid of said anion having an acidity greater than or equal to that of a hydrocarbon sulfonic acid, and with the proviso that said anion is organic or fluoroorganic when said cation is a metal, (ii) at least one fluorochemical repellent, and (iii) at least one monomer;

and (b) allowing polymerization of the monomer to occur.