JP5032022B2 - Method for producing foamable oil and fat composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a stable foaming oil and fat composition having persistency. <P>SOLUTION: The above problem is solved by including a step for confirming existence of needle crystals having &le;1 &mu;m diameter and 2-200 &mu;m length in oil and fat. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention relates to a method for producing a foamable oil / fat composition having a step of confirming the presence of needle-like crystals in the oil / fat.

  Conventionally, the preparation of a foamable oil / fat composition often relies on the experience and intuition of researchers, and the desired foamable oil / fat cannot always be obtained. Whether it can be a foamable oil or fat composition or has good foam quality, there is no production method that can be easily judged in the process without actually checking the foamability in the form of a pump former or aerosol. It was. Japanese Industrial Standards describe a method for evaluating foam in a general aqueous system, but foam in an oil system has a drawback that foaming is low and evaluation is difficult. (For example, refer nonpatent literature 1.)

JIS K 3362 method

  It aims at providing the manufacturing method of the stable and foamable oil-fat composition which is durable.

  The above-mentioned problems are solved by containing a surfactant and a needle-shaped crystal having a specific shape (diameter: 1 μm or less, length: 2-200 μm) composed of a surfactant and an oil and fat.

  The acicular crystals of the present invention represent surfactants and fine acicular crystals composed of a surfactant and an oil and fat, and a solution containing appropriate amounts of specific oils and surfactants is prepared for the formation of acicular crystals. Can be obtained at The prepared foamable oil / fat composition can be obtained by filling and injecting in the form of a pump former and an aerosol and then spraying. The method for measuring the number and size of needle crystals is not particularly limited. For example, 0.1 ml of a solution prepared at 80 ° C. is dropped on a slide glass and cooled at 25 ° C. for 2 hours, and then at room temperature. There is a method of observing in a 200 μm square visual field using a normalsky type phase contrast microscope with a scale at normal pressure. In order to obtain good foam generation and stabilization of the foamable oil and fat composition, it is preferable that 1 to 100 acicular crystals exist in a 100 μm square, more preferably 30 to 80, and even more preferably 70 to 80 is desirable. The size is preferably 1 μm or less in diameter and 2 to 200 μm in length, more preferably 1 μm or less in diameter and 10 to 100 μm in length, and further preferably 1 μm or less in diameter and 30 to 50 μm in length.

  In the present invention, the evaluation of foamability of a foamable oil and fat composition, which conventionally had no way to rely on the experience and intuition of a researcher, did not actually require a foaming test. A manufacturing method and an evaluation method that can be evaluated by observation are provided.

  The oil and fat used in the present invention is not particularly limited as long as it is liquid at the time of foaming, and may be a natural product or a chemically synthesized product. For example, avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, sasanqua oil, castor oil, flaxseed oil, safflower oil, Cotton oil, eno oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnagiri oil, Japanese kiri oil, jojoba oil, germ oil, trioctanoic acid glycerin, triisopalmitic acid glycerin and other liquid oils and liquid paraffin , Hydrocarbons such as squalene, squalane and pristane, higher alcohol fatty acids such as oleic acid, tall oil, isostearic acid, higher alcohols such as lauryl alcohol, oleyl alcohol, isostearyl alcohol, octyldodecanol, methyl polysiloxane, methyl phenyl poly Siloxane, methyl high Silicone such as rhogen polysiloxane and decamethylpolysiloxane, isopropyl myristate, isopropyl palmitate, hexyl laurate, oleyl oleate, decyl oleate octyldodecyl myristate, hexyldecyl dimethyloctanoate, diethyl phthalate, dibutyl phthalate Ester etc. are mentioned. Moreover, what is obtained by processing the said fats and oils, such as hydrogenation and fractionation, may be used. It should be noted that unsaturated fatty acids, side chain fatty acids, diglycerides, monoglycerides and the like as glyceride components may be contained in a slight amount.

  Although the compounding quantity of the fats and oils used by this invention is not specifically limited, Preferably, it is 10 to 99 weight% in the whole foamable fat and oil composition, More preferably, it is 30 to 95 weight%.

  The surfactant used in the present invention is not particularly limited as long as it is a glycerin fatty acid ester. For example, monocaprin, monocaprylin, monolaurin, monomyristin, monopalmitin, monoolein, monostearin, Monobehenine is desirable.

  The blending amount of the glycerin fatty acid ester is not particularly limited, but is preferably 0.01 to 50% by weight, more preferably 0.1 to 30% by weight, based on the fat and oil content of the foamable fat and oil composition. More preferably, it is 1 to 20% by weight.

  The foamable oil and fat composition of the present invention may be an aerosol type by further adding a propellant.

  The propellant used in the present invention is not particularly limited, but for example, chlorofluorocarbons such as trichlorofluoromethane, dichlorodifluoromethane, dichlorofluoromethane, trichlorotrifluoromethane, dichlorotetrafluoromethane, propane, isobutane, isopentane, norma It is a liquefied gas such as rubane and liquefied petroleum gas (hereinafter abbreviated as LPG), and is preferably propane, isobutane, isopentane, normal butane, or LPG, more preferably LPG from the viewpoint of foam quality and foam stability. In addition to these propellants, dimethyl ether, carbon dioxide gas, or nitrogen gas may be used. These gases can be used alone or in combination of two or more. The blending amount is preferably 2 to 90% by weight of the composition. If it is less than 2% by weight, it is difficult to obtain a good foam, and if it exceeds 90% by weight, the foam is scattered and difficult to handle.

  The aerosol of the present invention is obtained by filling a foamable oil and fat composition and a propellant in a container. In the present invention, the above-mentioned propellant may be blended, but foaming is possible even in a so-called non-gas type by blowing and mixing air without blending the propellant.

  In the method for producing a foamable oil and fat composition containing acicular crystals of the present invention, in addition to the above-mentioned essential components, other components can be appropriately blended within the scope of achieving the object of the present invention. For example, polyglycerin fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether, polyoxypropylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene glycol fatty acid ester, polyoxyethylene alkyl ether, Surfactant such as alkylol amide, polyoxyethylene hydrogenated castor oil, polyether-modified silicone oil such as polyoxyethylene / methylpolysiloxane copolymer, polyoxyethylene / polyoxypropylenemethylpolysiloxane copolymer, alkyl phosphorus Acids, phosphoric acid esters such as alkyl ether phosphoric acid, titanium oxide, talc, bentsite, cations, mica powders, preservatives, colorants, oxidation Sealant, water, perfume, drug, solid oil component, semisolid oil component, an alcohol, humectants, and the like.

  The use of the foamable oil and fat composition of the present invention is not particularly limited, but is a cleaning agent such as oil stains, a cleansing agent for cosmetics such as lipstick and foundation, suntan oil, baby oil, hair oil, Foamed massage oils and the like can be mentioned, and the use as baby oil is preferable.

  Next, the present invention will be described in more detail by way of examples. The present invention is not limited to these examples.

Example 1 Foamable oil / fat composition for baby oil Based on the raw material formulation shown in Table 1, a moisturizing type foamable oil / fat composition was prepared by the following method.

  The raw materials 1 to 10 in Table 1 were stirred and dissolved at 80 ° C. and cooled to room temperature to obtain a moisturizing type foamable oil and fat composition. Thereafter, 18 g of the composition was filled in a 100 ml aerosol can, a valve was set, and 2 g of liquefied petroleum gas was filled as a propellant to obtain the foamable oil and fat composition. The obtained foamable oil-fat composition was made into this invention product AL. Further, 0.1 ml of a foamable oil / fat composition obtained by dissolving raw materials 1 to 10 in Table 1 at 80 ° C. was dropped on a slide and cooled at 25 ° C. for 2 hours to obtain a sample for microscope observation. * The numbers in parentheses in the raw material names in the table indicate the number of moles of ethylene oxide added. same as below.

Comparative Example 1 Foamable oil / fat composition for baby oil A moisturizing type foamable oil / fat composition was prepared in the same manner as in Example 1 based on the raw material composition shown in Table 2.

  That is, for the products A to F of the present invention, the same oily component blending composition containing no surfactant is used as a comparative product A, and the same oily component blending composition containing a polyoxyethylene (2) cetyl ether is used as a comparison product B. The oil-based component blended composition containing glycerin monooleate ester is Comparative Product C, the oil-based component blended composition blended with tetraglycerin monostearate ester is Comparative Product D, polyoxyethylene (2) oleyl ether and polyoxyethylene ( 4) The said foamable oil-fat composition was obtained by the method similar to Example 1 by making the same oil-based component mixing | blending composition containing sodium lauryl ether phosphate into the comparative product E.

Test example 1
The inventive products A to L and the comparative products A to E were compared.
Evaluation methods and evaluation criteria are as follows.

(Bubble formation state)
Foam formation was performed by visual observation. The evaluation criteria were extremely uniform and fine bubbles ◎, uniform and fine bubbles ◯, coarsely textured bubbles Δ, and liquid that did not become bubbles X. Each aerosol was judged immediately after being sprayed onto an acrylic plate (length: 10 cm, width: 10 cm).
(Foam stability)
The persistence of the foam formed was evaluated. As the evaluation criteria, a case where bubbles persisted was marked as ◯, a time until collapse was recorded, and a case where bubbles were not formed at all and was in a liquid state was marked as x.
(Check the number and size of needle crystals)
The number and size of the needle-like crystals of the foamable oil and fat composition were evaluated at normal temperature and pressure using a normalsky phase contrast microscope with a micrometer. Those with needle-like crystals were marked with ◯, the number was specified, and those without needles were marked with x. The diameter and length of the needle-like crystals were measured.
The results are shown in Table 3.

  As shown in Table 3, the products A to L of the present invention contain needle-like crystals, are excellent in usability, and have fine fine bubbles and good foam stability, while comparative products A to E. Did not foam at all. As described above, it has been found that there is a high correlation between the needle-like crystal in the oil and fat composition and its foamability. For this reason, the method of evaluating foaming property by observing the needle-like crystal | crystallization of an oil-fat composition previously was found unlike the method based on the experience and intuition of the developer performed conventionally.

Claims (3)

  A foam composition comprising a glycerin fatty acid ester and an oil and fat, comprising a step of confirming the presence of needle-like crystals having a diameter of 1 μm or less and a length of 2 to 200 μm in the oil or fat. Method for producing an oily fat composition.   A method for evaluating foamability of an oil or fat composition, wherein the presence of needle-like crystals having a diameter of 1 μm or less and a length of 2 to 200 μm in an oil or fat composition containing a glycerin fatty acid ester and an oil or fat is confirmed.   A foamable oil and fat composition comprising needle-like crystals having a diameter of 1 μm or less and a length of 2 to 200 μm in an oil and fat composition containing a glycerin fatty acid ester and an oil and fat.