Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1996-12-12
1998-07-21
McGinty, Douglas J.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510365, 510501, 510500, 510495, 510426, 510435, 510433, C11D 183, C11D 114, C11D 122, C11D 310
Patent
active
057835381
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention pertains to a detergent composition including an inorganic alkali salt, water insoluble organic solvent, amine, pyrrolidone compound, anionic surface active agent, and water.
BACKGROUND ART
The conventional detergent composition for detergent the smears composed of oils is composed of widely known combination of a strong alkaline substance, such as sodium hydroxide, potassium hydroxide, sodium silicate or the like, with a surface active agent. Such a strong alkaline detergent composition raises safety problems. That is, in the case where a facility such as grill and oven (the facilities, devices and the like, the smears of which are required to be deterged will be hereinafter referred to as "object to be cleaned" as a generic name) is used at a high temperature and cleaned with such a detergent immediately after the use thereof (high temperature cleaning), such a detergent easily splatters to present a danger to the users in the vicinity. Another problem is that dispersion of a detergent into the application area, where it can be inhaled or settle on surfaces other than object to be cleaned, is noticeable while cleaning is carried out by spraying operation. Note, the terminology "dispersing" of the detergent, as used herein, includes a mist of the detergent generated during spraying thereof, a vapor. If cleaning is to be carried out after the temperature of an object to be cleaned has been lowered approximately to room temperature, the pause time extending from the stop of use to reuse becomes a considerably long period of time, thus making that time-consuming approach highly inconvenient. In addition, the conventional detergent composition contains a great amount of solids content, and there is a concern that it tends to leave residues adhered to an object cleaned at high temperature. These residues are essentially irremovable once baked onto the surface of the object cleaned, even by rinsing for an extended period of time.
On the other hand, another detergent composition useful for the cleaning of kitchen ranges, barbecue utensils, and the like is known from Japanese Examined Patent Publication No. 57-47238. This detergent composition is composed of water, an inorganic detergent, ammonia and/or organic amine compound, water soluble mono- or di-substituted amide, water insoluble or slightly soluble solvent, and a surface active agent, and can effectively clean and remove grease, fat and the like at a low temperature of 150.degree. F. (about 65.degree. C.), and owing to its non-alkalinity exposure, dangers to users can be avoided. However, since this detergent composition is poor in compatibility, variability is observed in the detergency thereof, and a phenomenon of producing white turbidity appears easily and phase separation is likely to be produced. Therefore, at the time of the practical use of this detergent composition, it is necessary to add thereto a much greater amount of thickener to produce a paste, and as a result thereof, it becomes difficult to coat this detergent composition by a hand spray, and it is necessary to resort to brushing by use of a brush or spraying it in an aerosol form. This brings about noticeable lowering of its workability. Further, this detergent composition has the problem that a great amount of residue remains on the surface of the cleaned object after completion of cleaning. The residue of this kind is difficult to remove by rinsing, requiring a long period of rinsing time, and as a result, a safety problem emerges due to the prolonged exposure to cleaning agents.
In addition, a detergent composition for detergent smears of grill, oven and the like also is known from, e.g., Japanese Examined Patent Publication No. 4-61915. This detergent composition is used for quickly deterging the carbonized oily smears of a grill, oven, and the like, and grease and the like accumulated within a duct, and contains, as indispensable constituent ingredients, alkali metal hydroxide, triethanolamine, polyhydric alcohol, ampholytic surface active
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McGinty Douglas J.
Minnesota Mining and Manufacturing Company
Pastirik Daniel R.
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