Antifouling composition, method for its production and product treated therewith

• US 6,207,777 B1
• Filed: 06/29/1998
• Issued: 03/27/2001
• Est. Priority Date: 06/30/1997
• Status: Expired due to Term

• Current Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Original Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Inventors: Sanekata, Akane, Shimada, Toyomichi, Maekawa, Takashige
• Primary Examiner(s): Morris, Terrel
• Assistant Examiner(s): SINGH-PANDEY, ARTI R
• Application Number:
  US09/106,347
• Time in Patent Office: 1,002 Days
• Field of Search: 526/245, 526/246, 526/301
• US Class Current: 526/245
• CPC Class Codes: D06M 15/263 of unsaturated carboxylic acids; Salts or esters thereof
• CPC Class Codes: D06M 15/27 of alkylpolyalkylene glycol esters of unsaturated carboxylic acids
• CPC Class Codes: D06M 15/277 containing fluorine
• CPC Class Codes: D06M 15/568 Reaction products of isocyanates with polyethers
• CPC Class Codes: D06M 2200/25 Resistance to light or sun, i.e. protection of the textile itself as well as UV shielding materials or treatment compositions therefor; Anti-yellowing treatments

Abstract

An antifouling composition comprising, as an effective component, a copolymer comprising the following polymer units (a), (b), (c) and (d):

(a) polymer units of a (meth)acrylate having a polyfluoroalkyl group,

(b) polymer units of a (meth)acrylate having a polyoxyethylene group,

(c) polymer units of a (meth)acrylate having a polyoxypropylene group, and

(d) polymer units of a (meth)acrylate having a blocked isocyanate group.

Claims

1. An antifouling composition comprising, as an effective component, a copolymer comprising the following polymer units (a), (b), (c) and (d):

(a) a polymer unit of a (meth)acrylate having a polyfluoroalkyl group,

(b) a polymer unit of a (meth)acrylate having a polyoxyethylene group,

(c) a polymer unit of a (meth)acrylate having a polyoxypropylene group, and

(d) a polymer unit of a (meth)acrylate having a blocked isocyanate group;

wherein said polyflouroalkyl group is represented by formula (1)

2. The antifouling composition according to claim 1, wherein the polymer unit (d) is a (meth)acrylate having an isocyanate group blocked with methyl ethyl ketoxime or ε

-caprolactam.

3. The antifouling composition according to claim 2, wherein the polymer unit (d) is a 2-isocyanate ethyl (meth)acrylate having a blocked isocyanate group.

4. The antifouling composition according to claim 3, wherein R^f=C_nF_2n+1, with n=6-16.

5. The antifouling composition according to claim 2, wherein the polymer unit (d) is obtained by reacting a (meth)acrylate having a hydroxyl group with a polyisocyanate in such a ratio that at least one isocyanate group will remain.

6. The antifouling composition according to claim 5, wherein R^f=C_nF_2n+1, with n=6-16.

7. The antifouling composition according to claim 2, wherein R^f=C_nF_2n+1, with n=6-16.

8. The antifouling composition according to claim 1, wherein the polymer unit (d) is a 2-isocyanate ethyl (meth)acrylate having a blocked isocyanate group.

9. The antifouling composition according to claim 8, wherein R^f=C_nF_2n+1, with n=6-16.

10. The antifouling composition according to claim 1, wherein the polymer unit (d) is obtained by reacting a (meth)acrylate having a hydroxyl group with a polyisocyanate in such a ratio that at least one isocyanate group will remain.

11. The antifouling composition according to claim 1, wherein R^f=C_nF_2n+1, with n=6-16.

12. The antifouling composition according to claim 1, wherein the copolymer comprises from 20 to 80 parts by weight of the polymer unit (a), from 10 to 50 parts by weight of the polymer unit (b), from 10 to 50 parts by weight of the polymer unit (c) and from 0.1 to 30 parts by weight of the polymer unit (d), per 100 parts by weight of the copolymer.

13. An antifouling composition comprising an aqueous medium and the copolymer according to claim 1, as an effective component, dispersed in the aqueous medium.

14. A method for producing an antifouling composition, which comprises copolymerizing a polymerizable monomer mixture comprising (a) a (meth)acrylate having a polyfluoroalkyl group, (b) a (meth)acrylate having a polyoxyethylene group, (c) a (meth) acrylate having a polyoxypropylene group and (d) a (meth)acrylate having a blocked isocyanate group, in the presence of a medium, wherein said polyflouroalkyl group is represented by formula (1)