Claims
- 1. A durable water repellent agent comprising a repellent and a fluorine-containing resin, wherein the repellent comprises a perfluoroalkyl group-containing polymer, the solid content weight ratio between said repellent and said fluorine-containing resin being (repellent):(fluorine-containing resin)=50:50 to 99:1,said perflouroalkyl group-containing polymer comprises a copolymer of a perfluoroalkyl group-containing ethylenically unsaturated monomer and one or more other monomers, said perfluoroalkyl group-containing ethylenically unsaturated monomer is at least one compound selected from the group consisting of: in the formulas, Rf represents a perfluoroalkyl group whose alkyl moiety contains 4 to 20 carbon atoms, R1 represents hydrogen or an alkyl group containing 1 to 10 carbon atoms, R2 represents an alkylene group containing 1 to 10 carbon atoms, R3 represents hydrogen or a methyl group, R4 represents an alkyl group containing 1 to 17 carbon atoms, n represents an integer of 1 to 10 and m represents an integer of 0 to 10,said other monomers are selected from the group consisting of alkyl(meth)acrylates containing 1 to 20 carbon atoms in the alkyl moiety, cyclohexyl(meth)acrylate, benzyl(meth)acrylate, polyethylene glycol di(meth)acrylate, N-methylolacrylamide, ethylene, vinyl chloride, (meth)acrylamide, styrene, α-methylstyrene, p-methylstyrene, vinyl alkyl ethers containing 1 to 20 carbon atoms in the alkyl moiety, halogenated alkyl vinyl ethers containing 1 to 20 carbon atoms in the alkyl moiety, vinyl alkyl ketones containing 1 to 20 carbon atoms in the alkyl moiety, maleic anhydride, butadiene, isoprene, chloroprene and silyl-containing vinyl monomers, said fluorine-containing resin comprises a fluororesin or a mixture of a fluororesin and some other resin, said fluororesin comprises a copolymer of a fluoroolefin and a vinyl monomer or a copolymer of fluoroolefins, or is obtained by seed polymerization of an acrylic resin.
- 2. The durable water repellent agent according to claim 1, wherein the silyl-containing vinyl monomer is selected from the group consisting of vinyltriethoxysilane, vinyltrimethoxysilane and γ-(methacryloxypropyl)trimethoxysilane.
- 3. The durable water repellent agent according to claim 1, wherein the fluorine-containing resin derives from an aqueous dispersion or dissolving in a solvent.
- 4. The durable water repellent agent according to claim 1, wherein said other resin is an acrylic resin.
- 5. The durable water repellent agent according to claim 1, wherein the copolymer of fluoroolefins is a copolymer of vinylidene fluoride and a fluoroolefin other than vinylidene fluoride.
- 6. The durable water repellent agent according to claim 5, wherein the fluorine-containing resin derives from an aqueous dispersion.
- 7. A coated article which comprises being coated with the durable water repellent agent according to claim 1.
- 8. The coated article according to claim 7, wherein the surface of the article comprises a porous substrate material.
- 9. The coated article according to claim 8, wherein the porous substrate material is concrete.
- 10. The durable water repellent agent according to claim 1 which is used for concrete, wood or cloth.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8-323557 |
Nov 1996 |
JP |
|
Parent Case Info
This application is a division of Ser. No. 09/308,162 filed Jul. 7, 1999 which is a 371 of PCT/JP97/04178 filed Nov. 18, 1997.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4075362 |
Concannon |
Feb 1978 |
A |
5462586 |
Sugiyama et al. |
Oct 1995 |
A |
6410626 |
Wada et al. |
Jun 2002 |
B1 |
Foreign Referenced Citations (10)
Number |
Date |
Country |
0700975 |
Mar 1996 |
EP |
0930338 |
Jul 1999 |
EP |
2140255 |
May 1990 |
JP |
3007784 |
Jan 1991 |
JP |
4033942 |
Feb 1992 |
JP |
4-85369 |
Mar 1992 |
JP |
5156029 |
Jun 1993 |
JP |
5-170909 |
Jul 1993 |
JP |
7-126428 |
May 1995 |
JP |
7268163 |
Oct 1995 |
JP |