초록 ▼

A flushing solution containing: a) a solvent component, b) an alkaline source; and c) a corrosion inhibitor component is provided. The solvent component preferably contains an alkoxylated aromatic alcohol. The corrosion inhibitor component may contain a fatty acid salt, a mixture of an aliphatic p

A flushing solution containing: a) a solvent component, b) an alkaline source; and c) a corrosion inhibitor component is provided. The solvent component preferably contains an alkoxylated aromatic alcohol. The corrosion inhibitor component may contain a fatty acid salt, a mixture of an aliphatic phosphate ester and a buffering agent such as boric acid or phosphoric acid, a mixture of a fatty acid salt, aliphatic phosphate ester, and buffering agent, or a mixture of a fatty acid salt and buffering agent. Alkanolamines are preferably used to form the fatty acid salt and/or as the alkaline source. The flushing solutions can be prepared in stable concentrated form and are useful for removing coatings such as paint from substrate surfaces.

대표청구항 ▼

What is claimed is: 1. A flushing solution composition comprising: an organic solvent component which comprises one or more compounds each of which contains at least one aromatic ring, said compounds comprising 1.62 to 3.24 weight percent of the flushing solution composition; 0.005 to 0.10 weight p

What is claimed is: 1. A flushing solution composition comprising: an organic solvent component which comprises one or more compounds each of which contains at least one aromatic ring, said compounds comprising 1.62 to 3.24 weight percent of the flushing solution composition; 0.005 to 0.10 weight percent of a fatty acid salt; and an alkaline source. 2. The flushing solution composition of claim 1 wherein the alkaline source is selected from the group consisting of inorganic bases, alkanolamines, amines, and mixtures thereof. 3. The flushing solution composition of claim 1 further comprising a buffering agent selected from the group consisting of buffering organic acids, salts of buffering organic acids, buffering inorganic acids, salts of buffering inorganic acids and mixtures thereof. 4. The flushing solution composition of claim 1 further comprising a buffering agent selected from the group consisting of phosphoric acid, boric acid, benzoic acid, gluconic acid, citric acid and salts and mixtures thereof. 5. The flushing solution composition of claim 1 wherein the organic solvent component comprises one or more compounds each of which contains at least one aromatic ring and alkoxylate units of general formula I wherein: R1, R2, R3 and R4 are independently selected from hydrogen and methyl; R5 is hydrogen, a C1-C6 alkyl, or phenyl; and n is 2-10. 6. The flushing solution composition of claim 1 wherein the organic solvent component comprises a mixture of alkoxytated aromatic alcohols of general formula II with a number average Navg. of alkoxylate units from about 2.5 to about 5, and wherein R1, R2, R3, R4 and R5 are as defined for formula I, and R6, R7 and R8 are independently selected from hydrogen and C1-C4 alkyl 7. The flushing solution composition of claim 1 wherein the organic solvent component comprises a mixture of alkoxylated aromatic alcohols of general formula III with a number average Navg. of alkoxylate units from about 2.5 to about 5, wherein R1, R2, R 3, R4 and R5 are as defined for formula I, and R6 and R7 are independently selected from hydrogen and C1-C4 alkyl 8. The flushing solution composition of claim 1 wherein the fatty acid salt is obtained by combining a fatty acid with sixteen or more carbons with a nitrogen-containing compound selected from the group consisting of amines, alkanolamines, and mixtures thereof. 9. The flushing solution composition of claim 8 wherein the fatty acid is selected from the group consisting of palmitic acid, oleic acid, stearic acid, montanic acid and mixtures thereof. 10. The flushing solution composition of claim 1 wherein the organic solvent component contains one or more water-soluble or water-miscible compounds selected from the group consisting of glycols, glycol ethers, alcohols, alkoxylated alcohols, esters, ketones and mixtures thereof. 11. The flushing solution composition of claim 1 wherein the organic solvent component contains one or more alkoxylated aromatic alcohols selected from the group consisting of ethoxylated phenols, ethoxylated benzyl alcohols and mixtures thereof. 12. The flushing solution composition of claim 1 wherein at least one alkanolamine is present in cationic or free base form. 13. The flushing solution composition of claim 1 wherein the fatty acid salt has an alkanolammonium cation. 14. The flushing solution composition of claim 1 wherein the organic solvent component is comprised of an alkoxylated aromatic alcohol and a C1-C6 aliphatic mono-alcohol. 15. The flushing solution composition of claim 1 wherein: the organic solvent component is comprised of an alkoxylated aromatic alcohol and an aliphatic mono-alcohol; the fatty acid salt comprises ten or more carbons; and the alkaline source comprises an amine and/or alkanolamine. 16. The flushing solution composition of claim 15 wherein the fatty acid is selected from the group consisting of palmitic acid, oleic acid, stearic acid, montanic acid and mixtures thereof. 17. The flushing solution composition of claim 15 further comprising a buffering agent. 18. A flushing solution composition comprising: (a) an organic solvent component comprising a mixture of alkoxylated benzyl alcohols; (b) a fatty acid salt obtained by combining a fatty acid with a nitrogen-containing compound selected from the group consisting of amines, alkanolamines, and mixtures thereof; and (c) an alkaline source. 19. The flushing solution composition of claim 18 wherein the alkaline source is selected from the group consisting of inorganic bases, alkanolamines, amines, and mixtures thereof. 20. The flushing solution composition of claim 18 further comprising a buffering agent selected from the group consisting of buffering organic acids, salts of buffering organic acids, buffering inorganic acids, salts of buffering inorganic acids and mixtures thereof. 21. The flushing solution composition of claim 18 further comprising a buffering agent selected from the group consisting of phosphoric acid, boric acid, benzoic acid, gluconic acid, citric acid and salts and mixtures thereof. 22. The flushing solution composition of claim 18 wherein the organic solvent component further comprises one or more compounds each of which contains at least one aromatic ring and alkoxylate units of general formula I wherein: R1, R2, R3 and R4 are independently selected from hydrogen and methyl; R5 is hydrogen, a C1-C6 alkyl, or phenyl; and n is 2-10. 23. The flushing solution composition of claim 18 wherein the organic solvent component comprises a mixture of alkoxylated aromatic alcohols of general formula II with a number average Navg. of alkoxylate units from about 2.5 to about 5, and wherein R1, R2, R3, R4 and R5 are as defined for formula I, and R6, R7 and R8 are independently selected from hydrogen and C1-C4 alkyl 24. The flushing solution composition of claim 18 wherein the organic solvent component further comprises a mixture of alkoxylated aromatic alcohols of general formula III with a number average Navg. of alkoxylate units from about 2.5 to about 5, wherein R1, R 2, R3, R4 and R5 are as defined for formula I, and R6 and R7 are independently selected from hydrogen and C1-C4 alkyl 25. The flushing solution composition of claim 18 wherein the fatty acid salt is obtained by combining a fatty acid with sixteen or more carbons with a nitrogen-containing compound selected from the group consisting of amines, alkanolamines, and mixtures thereof. 26. The flushing solution composition of claim 25 wherein the fatty acid is selected from the group consisting of palmitic acid, oleic acid, stearic acid, montanic acid and mixtures thereof. 27. The flushing solution composition of claim 1 further comprising water, and the organic solvent component is present from 60% to 99% by weight, not including the weight percent of water in the composition. 28. The flushing solution composition of claim 18 wherein the organic solvent component contains one or more water-soluble or water-miscible compounds selected from the group consisting of glycols, glycol ethers, alcohols, alkoxylated alcohols, esters, ketones and mixtures thereof. 29. The flushing solution composition of claim 18 wherein the organic solvent component contains one or more alkoxylated aromatic alcohols selected from the group consisting of ethoxylated phenols, ethoxylated benzyl alcohols and mixtures thereof. 30. The flushing solution composition of claim 18 wherein at least one alkanolamine is present in cationic or free base form. 31. The flushing solution composition of claim 18 wherein the fatty acid salt has an alkanolammonium cation. 32. The flushing solution composition of claim 18 wherein the organic solvent component is comprised of an alkoxylated benzyl alcohol and a C1-C6 aliphatic mono-alcohol. 33. A flushing solution composition formed by combining: an organic solvent component which comprises a mixture of alkoxylated aromatic alcohols of general formula I with a number average Navg. of alkoxylate units from about 2.5 to 5, wherein R1, R 2, R3 and R4 are independently selected from hydrogen and methyl; R5 is hydrogen, a C1-C6 alkyl, or phenyl, and R6 and R7 are independently selected from hydrogen and C1-C4 alkyl a fatty acid having ten or more carbons; and an alkaline source comprising an amine and/or alkanolamine, said alkaline source being present in stoichiometric excess relative to said fatty acid, wherein the flushing solution composition has a pH of at least 8. 34. The flushing solution composition of claim 33 wherein the alkaline source further comprises an inorganic base. 35. The flushing solution composition of claim 33 further comprising a buffering agent selected from the group consisting of buffering organic acids, salts of buffering organic acids, buffering inorganic acids, salts of buffering inorganic acids and mixtures thereof. 36. The flushing solution composition of claim 33 further comprising a buffering agent selected from the group consisting of phosphoric acid, boric acid, benzoic acid, gluconic acid, citric acid and salts and mixtures thereof. 37. The flushing solution composition of claim 33 wherein the organic solvent component further comprises a mixture of alkoxylated aromatic alcohols of general formula II with a number average Navg. of alkoxylate units from about 2.5 to about 5, and wherein R1, R 2, R3, R4 and R5 are as defined for formula I, and R6, R7 and R8 are independently selected from hydrogen and C1-C4 alkyl 38. The flushing solution composition of claim 33 wherein the organic solvent component comprises a mixture of alkoxylated aromatic alcohols of general formula III with a number average Navg. of alkoxylate units of about 4, wherein R1, R2, R3, R4 and R5 are as defined for formula I, and R6 and R7 are independently selected from hydrogen and C1-C 4 alkyl 39. The flushing solution composition of claim 33 wherein the fatty acid has sixteen or more carbons. 40. The flushing solution composition of claim 33 wherein the fatty acid is selected from the group consisting of palmitic acid, oleic acid, stearic acid, montanic acid and mixtures thereof. 41. The flushing solution composition of claim 33 further comprising water, and the organic solvent component is present from 60% to 99% by weight, not including the weight percent of water in the composition. 42. The flushing solution composition of claim 33 wherein the organic solvent component contains one or more water-soluble or water-miscible compounds selected from the group consisting of glycols, glycol ethers, alcohols, alkoxylated alcohols, esters, ketones and mixtures thereof. 43. The flushing solution composition of claim 33 wherein the organic solvent component contains one or more alkoxylated aromatic alcohols selected from the group consisting of ethoxylated phenols, ethoxylated benzyl alcohols and mixtures thereof. 44. The flushing solution composition of claim 33 wherein at least one alkanolamine is present in cationic or free base form.