Fluorine containing aqueous composition having water repellent and oil repellent properties

• US 5,346,949 A
• Filed: 05/25/1993
• Issued: 09/13/1994
• Est. Priority Date: 05/29/1992
• Status: Expired due to Fees

• Current Assignee: Hoechst Gosei Kabushiki Kaisha
• Original Assignee: Hoechst Gosei Kabushiki Kaisha
• Inventors: Fukazawa, Yuji
• Primary Examiner(s): Schofer, Joseph L.
• Assistant Examiner(s): SMITH, JEFFREY
• Application Number:
  US08/066,664
• Time in Patent Office: 476 Days
• Field of Search: 524/805, 524/544, 524/251, 526/245
• US Class Current: 524/805
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 33/16 Homopolymers or copolymers of esters containing halogen atoms
• CPC Class Codes: D06M 15/227 of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
• CPC Class Codes: D06M 15/263 of unsaturated carboxylic acids; Salts or esters thereof
• CPC Class Codes: D06M 15/267 of unsaturated carboxylic esters having amino or quaternary ammonium groups
• CPC Class Codes: D06M 15/277 containing fluorine
• CPC Class Codes: D06M 15/3562 containing nitrogen
• CPC Class Codes: D06M 15/3564 containing phosphorus
• CPC Class Codes: D06M 2200/11 Oleophobic properties
• CPC Class Codes: D06M 2200/12 Hydrophobic properties

Abstract

A feature of the present invention resides in a fluorine containing aqueous composition having water repellent and oil repellent properties comprising:

(A) a fluorine containing copolymer aqueous emulsion which can be obtained by way of radical polymerization of perfluoroalkyl-acrylate monomer, monomer having carboxyl group and monomer having hydroxyl group at a certain ratio; and

(B) cationic water soluble polymer such as polyallylamine salt.

Claims

1. A fluorine containing aqueous composition having water repellent and oil repellent properties comprising:

(A) a fluorine containing copolymer aqueous emulsion obtained by radical polymerization after refining the size of the dispersed particles to under 0.3 microns through an emulsifying process in water by adding a surfactant to a composition of monomers comprising;

(a) 2 to 40 mol % of a perfluoro-alkyl-acrylate monomer wherein the alkyl group has 6 to 12 carbon atoms;

(b) 0.1 to 15 mol % of an α

,β

-ethylenically unsaturated monomer containing carboxyl group which can be copolymerized with monomer (a);

(c) 0 to 25 mol % of an α

,β

-ethylenically unsaturated monomer containing hydroxyl groups which can be copolymerized with the monomers (a) and (b); and

(d) 97.9 to 45 mol % of α

,β

-ethylenically unsaturated monomer which can be copolymerized with the monomers described in (a), (b) and (c) and which is different than monomers (a), (b) and (c); and

(B) a cationic water soluble polymer compound.

2. The fluorine containing aqueous composition with water repellent and oil repellent properties according to claim 1 which is in the form of a mixture of the aqueous emulsion (A) and the cationic compound (B).

3. The fluorine containing aqueous composition with water repellent and oil repellent properties according to claim 1 wherein the cationic water soluble polymer compound in the cationic compound (B) is polyallylamine salt.

4. The fluorine containing aqueous composition with water repellent and oil repellent properties according to claim 1, wherein a solution of the cationic compound (B) is used with 0.5 to 10 parts by weight, based on solids, with 100 parts by weight, based on solids, of (A).

5. The fluorine containing aqueous composition with water repellent and oil repellent properties according to claim 1, wherein the size of the dispersed particles having refined to under 0.3 microns by way of ultrasonic homogenizing or high pressure homogenizing process after monomer composition is emulsified in water using surfactant.

6. The fluorine containing aqueous composition with water repellent and oil repellent properties according to claim 1 wherein the perfluoro-alkyl-acrylate monomer is α

,β

-perfluro octyl ethyl methacrylate.

7. The fluorine containing aqueous composition with water repellent and oil repellent properties according to claim 1 wherein the α

,β

-ethylenically unsaturated monomer (b) is methacrylic acid.

8. The fluorine containing product with water repellant and oil repellant properties comprising:

(A) The fluorine containing copolymer aqueous emulsion obtained by radical polymerization after refining disperse particles to under 0.3 microns through an emulsifying process in water by adding a surfactant to a composition of monomers comprising;

(a) 2 to 40 mol % of a perfluoro-alkyl-acrylate monomer wherein in the alkyl group has six to twelve carbon atoms;

(b) 0.1 to 15 mol % of α

,β

-ethylenically unsaturated monomer contained carboxyl group which can be copolymerized with monomer (a);

(c) 0 to 25 mol % of an α

,β

-ethylenically unsaturated monomer containing hydroxyl groups which can be copolymerized with the monomers (a) and (b); and

(d) 97.9 to 45 mol % of an α

,β

-ethylenically unsaturated monomer which can be copolymerized with the monomers described in (a), (b), and (c) and which is different than monomers (a), (b) and (c); and

(B) A cationic water-soluble polymer compound;

which is in the form of a two-liquid component product comprising the aqueous emulsion (A) separate from the cationic compound (B) .