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US 5,691,289 AGranted
Cleaning compositions and methods of using the same
AssigneeKay Chemical Company
InventorsKaren Purcell, Charles L. Hawes, David R. Harry, Jr., Gerald E. La Cosse
Life of this patent
Estimating the term…
Abstract
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.
Claims15
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 a solvent extender selected from the group consisting of small chain alcohols, alkylene carbonates, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, diethyleneglycolmonobutylether, diethyleneglycolmonoethylether, diethyleneglycolmonohexylether, diethyleneglycolmonomethylether, diethyleneglycolmonopropylether, dipropyleneglycolmonobutylether, dipropyleneglycolmonomethylether, dipropyleneglycolmonopropylether, ethoxypropyleneglycolmonobutylether, ethyleneglycolmonoethylether, ethyleneglycolmonohexylether, ethyleneglycolmonomethylether, ethyleneglycolmonopropylether, propyleneglycolmonobutylether, propyleneglycolmonomethylether, propyleneglycolmonopropylether, propyleneglycolmono-t-butylether, triethyleneglycolmonoethylether, triethyleneglycolmonomethylether, triethyleneglycolmonopropylether, and tripropyleneglycolmonomethylether;
- and
- e. at least about 20% by weight water;
- said composition being in the form of a microemulsion.
4 more elements
A microemulsion cleaning composition comprising:
- a. about 10% to about 20% by weight of a terpene compound;
- b. about 10% to about 20% by weight of N-methylpyrrolidone;
- c. about 10% to about 15% by weight of a surfactant effective to form a microemulsion, said surfactant being selected from the group consisting of a nonionic surfactant and a cationic surfactant and mixtures thereof;
- d. about 40% to about 50% by weight of water;
- and
- e. about 10% to about 15% by weight of a solvent extender selected from the group consisting of propylene glycol monomethyl ether and hexylene glycol and mixtures thereof;
- said composition being in the form of a microemulsion and having a flash point of at least 105 degrees F. and a pH of about 6.0 to about 8.0.
4 more elements
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, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, diethyleneglycolmonobutylether, diethyleneglycolmonoethylether, diethyleneglycolmonohexylether, diethyleneglycolmonomethylether, diethyleneglycolmonopropylether, dipropyleneglycolmonobutylether, dipropyleneglycolmonomethylether, dipropyleneglycolmonopropylether, ethoxypropyleneglycolmonobutylether, ethyleneglycolmonoethylether, ethyleneglycolmonohexylether, ethyleneglycolmonomethylether, ethyleneglycolmonopropylether, propyleneglycolmonobutylether, propyleneglycolmonomethylether, propyleneglycolmonopropylether, propyleneglycolmono-t-butylether, triethyleneglycolmonoethylether, triethyleneglycolmonomethylether, triethyleneglycolmonopropylether, and tripropyleneglycolmonomethylether;
- and
- v. at least about 20% by weight water, said composition being in the form of a microemulsion;
- b. contacting the marking material with said microemulsion composition for a period of time sufficient to solubilize said marking material;
- and
- c. removing from said surface said composition and said marking material with water.
7 more elements
Dependencies are inferred from the claim text.