JPH0913072A - Treating agent capable of partly saponifying and solidifying oil saponifiable and liquid at ordinary temperature like triglyceride and its production - Google Patents

Abstract

PURPOSE: To solidify a waste oil which is liquid at ordinary temp. to obtain a solid to be discarded as a kitchen refuse or reused as a crude soap, by using a solution comprising an alkali for partially saponifying the oil and a saponification accelerator for solidifying the oil within a few minutes after initiation of the saponification. CONSTITUTION: An oil which is liquid at ordinary temp. is saponified with an alkali, i.e., caustic soda or caustic potash, in an amount of 1/6 to 1/3 of that necessary for complete saponification, in the presence of a saponification accelerator for solidifying the oil within about one to three minutes after initiation of the saponification. The alkali is preferably caustic soda from the standpoint of the hardness of the solid saponification product. Examples of the accelerator include diethylene glycol monoethyl ether, diethylene glycol monoisobutyl ether, diethylene glycol monobutyl ether, propylene glycol, and 2-phenoxyethanol polypropylene glycol. Also effective are combinations of any of these with ethyl alcohol, isopropyl alcohol, n-propyl alcohol, etc.

Description

Detailed Description of the Invention

[Field of Industrial Application] The present invention relates to waste oils and fats, etc., which are liquid at room temperature and are used at about 90 ° C. from room temperature.
In the meantime, about 15% to 20% by volume of the solution of an alkali and a saponification accelerator, which is about 1/6 to 1/3 of the saponification value of the fat, is added to the fat and the mixture is stirred for about 1 to 3 minutes. Then, if it is made uniform, it solidifies, so it is discarded as raw garbage or it is used for cleaning other than cosmetics by utilizing the cleaning power. In this case, it is possible to use it as a crude soap by using a solidified solution prepared by increasing the solution in advance.

2. Description of the Related Art Conventionally, the waste oil of edible oil for home and business has been treated by solidifying the oil with castor fatty acid or soaking it in newspaper or the like and discarding it as raw garbage. When the solidification or the packaging is insufficient, the inside of the garbage truck is contaminated in any case, which hinders the work.

(Problems to be Solved by the Invention) In the present invention, the solidification treatment time is extremely short at 1 to 3 minutes, there is no fear of burns or fires, and the oil does not exude from the solidified product. It is clean because it can be treated as soap instead of as. If it is used as soap, it will also be a resource reuse.

A specific embodiment of the present invention will be described.

Example 1

Caustic soda 25 was dissolved by stirring with water 50 (dissolved by heat of dissolution), and propylene glycol 30, ethyl alcohol 10, diethylene glycol monoisobutyl ether 30, laurylamine oxide 30% aqueous solution 5 were added to make a uniform solution. . Fat 100 (volume)
On the other hand, when this solution 15 (volume) is added and stirred well for about 1 minute and left to stand, it solidifies while producing reaction heat. Remove it from the container with chopsticks, spatula, etc. to make garbage or coarse soap. The used container can be washed only by washing with water. Example 2

To a solution of caustic soda 30 dissolved in water 60, 2-phenoxyethanol 40 polypropylene glycol 20, isopropyl alcohol 10, laurylamine oxide 30% aqueous solution 3 are added to form a solution. Usage is the same as in Example 1.

Claims (3)

[Claims] 1. When saponifying an oil or fat that is liquid at room temperature with an alkali such as caustic soda or potassium hydroxide, it is saponified with 1/6 to 1/3 of the amount of alkali required for complete saponification, and about 1 to 3 minutes after the saponification is started. Saponification accelerator for solidification with 2. The alkali used for saponification is caustic soda,
Although caustic potash is suitable, caustic soda seems to be suitable from the viewpoint of the hardness of the solidified product after saponification. As the saponification accelerator, diethylene glycol monoethyl ether,
Diethylene glycol monoisobutyl ether, diethylene glycol monobutyl ether, propylene glycol, 2-phenoxyethanol polypropylene glycol, and the like, which are effective in combination with the above, include ethyl alcohol, isopropyl alcohol, and n-propyl alcohol. 1 to 3 of the above are blended and used. 3. When a saponification accelerator, a caustic soda aqueous solution and the like are blended, a two-liquid separation state may occur. In this case, it becomes one liquid by using a surfactant. Lauryl amine oxide and the like are suitable as the surfactant.