Claims
- 1. A water-borne road marking paint comprising a binder having a total weight and a chelating agent capable of chelating iron ions to form a substantially colorless complex, said chelating agent comprising a material selected from the group consisting of aminocarboxylic acid, ammonium or alkali metal salts thereof; phosphonocarboxylic acid, ammonium or alkali metal salts thereof; phosphonic acid, ammonium or alkali metal salts thereof; aminophosphonic acid, ammonium or alkali metal salts thereof; tripolyphosphoric acid, ammonium or alkali metal salts thereof, pyrophosphoric acid, ammonium or alkali metal salts thereof; hexametaphosphoric acid, ammonium or alkali metal salts thereof; organic acid, ammonium and alkali metal salts thereof; diketone derivative of 2,4-pentandione; hydroxamic acid; and combinations thereof.
- 2. The road marking paint according to claim 1, wherein the aminophosphonic acid is selected from the group consisting of aminotri(methylenephosphonic acid), diethylenetriamine penta(methylene phosphonic acid) and hexamethylene diamine tetra(methylene phosphonic acid).
- 3. The road marking paint according to claim 1, wherein the chelating agent capable of chelating iron ions is amino-tris-methylene phosphonic acid, ammonium or alkali metal salts thereof.
- 4. The road marking paint according to claim 1 wherein said paint comprises 0.1 to 5 percent by weight based on the total weight of polymer solids of said chelating agent.
- 5. The road marking paint according to claim 1 further comprising a pigment dispersant.
- 6. The road marking paint according to claim 1 further comprising a white pigment.
- 7. The road marking paint according to claim 1 wherein the chelating agent capable of chelating iron ions comprises a compound bearing one PO(OH).sub.2 group or EDTA.
- 8. The road marking paint according to claim 1, wherein said organic acid is selected from the group consisting of fumaric acid, citric acid, oxalic acid, itaconic acid, crotonic acid and maleic acid.
- 9. The road marking paint according to claim 1 further comprising a substance selected from the group consisting of a polyfunctional amine, an amine modified, dispersed or solubilized polymer, and a combination thereof.
- 10. The road marking paint according to claim 9, wherein said polyfunctional amine is polymerized from a monomer selected from the group consisting of dimethylaminopropylmethacrylamide, oxazolidinoethylmethacrylate, dimethylaminoethylmethacrylate and a combination thereof.
- 11. The road marking paint according to claim 1, wherein the phosphonic acid comprises 1-hydroxyethylidene-1,1-diphosphonic acid.
Parent Case Info
This is a continuation of application Ser. No. 08/651,836, filed Jun. 4, 1996, now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (4)
Number |
Date |
Country |
343831 |
May 1989 |
EPX |
482 961 A2 |
Apr 1992 |
EPX |
0482961 |
Apr 1992 |
EPX |
1 082 051 |
Sep 1967 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
651836 |
Jun 1996 |
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