Aqueous liquid dispersion of water and oil repellent agent

• US 20070100064A1
• Filed: 11/04/2004
• Published: 05/03/2007
• Est. Priority Date: 11/13/2003
• Status: Abandoned Application

• Current Assignee: Daikin Industries Ltd
• Original Assignee: Daikin Industries Ltd
• Inventors: Fukumori, Masaki, Aga, Tsukasa
• Application Number:
  US10/579,216
• Publication Number:
  US 20070100064A1
• Time in Patent Office: Days
• US Class Current: 524/556
• CPC Class Codes: C08F 214/182 Monomers containing fluorine not covered by the groups C08F214/20 - C08F214/28
• CPC Class Codes: C08F 220/24 containing perhaloalkyl radicals
• CPC Class Codes: C09K 3/18 for application to surfaces to minimize adherence of ice, mist or water thereto rendering particulate materials free flowing, in general, e.g. making them hydrophobic B01J2/30; Thawing or antifreeze materials for application to surfaces used in liquids for heat-transfer, heat-exchange or heat-storage or for the production of heat or cold other than by combustion, e.g. radiator liquids, C09K5/00
• CPC Class Codes: D06M 13/2243 Mono-, di-, or triglycerides
• CPC Class Codes: D06M 15/277 containing fluorine
• CPC Class Codes: D06M 2200/11 Oleophobic properties
• CPC Class Codes: D06M 2200/12 Hydrophobic properties

Abstract

Disclosed is an aqueous liquid dispersion of a water and oil repellent agent which contains (I) a copolymer between a polymerizable compound having a perfluoroalkyl or perfluoroalkenyl group and an acrylic acid group, methacrylic acid group or alpha-substituted acrylic acid group, a chlorine-containing polymerizable compound, and another optionally present copolymerizable compound which is copolymerizable with the foregoing compounds, and (II) a hydrochloric acid trapping compound. Such an aqueous liquid dispersion of a water and oil repellent agent is excellent in shelf life stability, and is capable of providing a base material with excellent water and oil repellency.

Claims

1. An aqueous water- and oil-repellent dispersion comprising:

(I) a copolymer comprising a polymerizable compound having a perfluoroalkyl or perfluoroalkenyl group and an acrylate group, methacrylate group or alpha-substituted acrylate group, a chlorine-containing polymerizable compound, and, optionally present, another copolymerizable compound copolymerizable with the foregoing monomers, and

(II) a hydrochloric acid-trapping compound.

2. The aqueous water- and oil-repellent dispersion according to claim 1, wherein the hydrochloric acid-trapping compound is an epoxy compound, a weakly basic compound, or combination thereof.

3. The aqueous water- and oil-repellent dispersion according to claim 2, wherein the epoxy compound is an epoxidized vegetable oil.

4. The aqueous water- and oil-repellent dispersion according to claim 3, wherein the epoxidized vegetable oil is an epoxidized soybean oil or an epoxidized linseed oil.

5. The aqueous water- and oil-repellent dispersion according to claim 2, wherein the weakly basic compound is a metal salt of an acid.

6. The aqueous water- and oil-repellent dispersion according to claim 2, wherein the weakly basic compound is sodium hydrogen carbonate or sodium carbonate.

7. The aqueous water- and oil-repellent dispersion according to claim 1, wherein the chlorine-containing polymerizable compound is vinyl chloride, vinylidene chloride, alpha-chloroacrylate or 3-chloro-2-hydroxypropyl methacrylate.

8. The aqueous water- and oil-repellent dispersion according to claim 1, wherein the aqueous dispersion also contains a surfactant which consists of a nonionic surfactant.

9. The aqueous water- and oil-repellent dispersion according to claim 8, wherein the nonionic surfactant is three surfactants having different HLB values.

10. A textile to which the aqueous dispersion according to claim 1 is applied.

11. A method of processing a textile, which comprises using the aqueous dispersion according to claim 1.