초록 ▼

Cleaning compositions are disclosed that economically and effectively remove a variety of marking materials from many coated or uncoated substrate surfaces. The compositions contain a terpene compound, a pyrrolidone compound, an emulsifying surfactant, and water, the compositions being in the form o

Cleaning compositions are disclosed that economically and effectively remove a variety of marking materials from many coated or uncoated substrate surfaces. The compositions contain a terpene compound, a pyrrolidone compound, an emulsifying surfactant, and water, the compositions being in the form of a microemulsion. Also disclosed are methods of cleaning marked surfaces with the microemulsion compositions.

대표청구항 ▼

[ We claim:] [1.] A microemulsion cleaning composition comprising:a. about 1% to about 60% by weight of a terpene compound;b. about 1% to about 60% by weight of a pyrrolidone compound;c. about 1% to about 35% by weight of a surfactant effective to form a microemulsion;d. 9.5% to about 20% by weight

[ We claim:] [1.] A microemulsion cleaning composition comprising:a. about 1% to about 60% by weight of a terpene compound;b. about 1% to about 60% by weight of a pyrrolidone compound;c. about 1% to about 35% by weight of a surfactant effective to form a microemulsion;d. 9.5% to about 20% by weight of the solvent extender selected from the group consisting of small chain alcohols, alkylene carbonates, monoglycols, and glycol ethers, with the proviso that the solvent extender is not ethyleneglycolmonobutylether; ande. at least about 20% by weight water. [13.] A method for removing markings from a surface comprising:a. applying to a marking material on a substrate surface a microemulsion cleaning composition comprising:i. about 1% to about 60% by weight of a terpene compound;ii. about 1% to about 60% by weight of a pyrrolidone compound;iii. about 1% to about 35% by weight of a surfactant effective to form a microemulsion;iv. 9.5% to about 20% by weight of a solvent extender selected from the group consisting of small chain alcohols, alkylene carbonates, monoglycols, and glycol ethers, with the proviso that the solvent extender is not ethyleneglycolmonobutylether; andv. at least about 20% by weight water;b. contacting the marking material with said microemulsion composition for a period of time sufficient to solubilize said marking material; andc. removing from said surface said composition and said marking material with water. A method for removing markings from a surface according to claim 5, wherein the terpene compound ranges from about 5% to about 40% by weight, the pyrrolidone compound ranges from about 5% to about 40% by weight, and the surfactant ranges from about 5% to about 20% by weight, the solvent extender ranges from 9.5% to about 15% by weight, and the water ranges from about 25% to about 60% by weight. A method for removing markings from a surface according to claim 5, wherein the terpene compound ranges from about 10% to about 20% by weight, the pyrrolidone compound ranges from about 10% to about 20% by weight, and the surfactant ranges from about 10% to about 15% by weight. A method for removing markings from a surface according to claim 15, wherein the cleaning composition comprises from about 10% to about 15% by weight of a solvent extender. A method for removing markings from a surface according to claim 16, wherein:a. the surfactant effective to form a microemulsion comprises a nonionic surfactant and a cationic surfactant;b. the pyrrolidone compound is N-methylpyrrolidone;c. the solvent extender comprises propylene glycol monomethyl ether and hexylene glycol;d. the cleaning composition has a flash point of at least about 105.degree. F.; ande. the cleaning composition has a pH of about 6.0 to about 8.0.