JPS6373965A - Deodorizing material - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a deodorizing material. More specifically, the present invention relates to a deodorizing material in which a liquid deodorant substance is held in granules.

[Conventional technology]

Methods for eliminating various odors including malodors include sensory deodorization, chemical deodorization, physical/chemical deodorization, physical adsorption deodorization, and biological deodorization.

Currently, activated carbon is commonly used as a deodorizer for bad odors, but the action of activated carbon is physical adsorption deodorization, so when the adsorption reaches a saturation point, it not only becomes less effective, but also removes ammonia. It has drawbacks such as almost no adsorption ability for.

On the other hand, Japanese Patent Publication No. 46-27704 describes a method for preserving meat products, in which fish and livestock meat are treated with amino acid-type or betaine-type amphoteric surfactants, sorbitan-type nonionic surfactants, and nonanol (nonyl alcohol). It is stated that a preservative and sterilizing effect can be imparted to the product by treating it with a composition containing the following.

It has been confirmed that such compositions not only exhibit antiseptic and sterilizing effects, but also are effective in removing the characteristic odors emitted from clothing, containers, etc. that adhere to them when they are handled. The composition is a liquid composition,
Although it can be used for antiseptic and sterilizing purposes by brushing or spraying a diluted solution of it, there are some difficulties in handling it when used for deodorizing purposes.

[Problem that the invention seeks to solve]

Therefore, the present inventors investigated how to continuously exhibit the effectiveness of the deodorizing effect of the above composition and also improve its handling properties. They focused on the fact that beads are porous and therefore retain a large amount of water, and found that it is effective to impregnate these granules with a liquid deodorant made of the above composition.

At the same time, in order to retain the deodorant in the granular form while maintaining its liquid state and to maintain its deodorizing effect, it is possible to coexist with a water-absorbing substance to suppress water evaporation. It was also found to be more effective.

[Means for solving problems]

Therefore, the present invention relates to a deodorizing material, which comprises an amino acid type or betaine type amphoteric surfactant, a sorbitan type nonionic surfactant, nonanol and preferably further a water-absorbing substance co-coated with styrene-divinibenzene. It is held in polymer-based microporous beads.

As the amino acid type amphoteric surfactant, alkyl polyaminoethylglycine hydrochloride, lauryl aminopropionate sodium salt, stearyl amino dipropionate sodium salt, etc. are used.

As the betaine type amphoteric surfactant, lauryl dimethyl betaine, stearinone dimethyl betaine, lauryl dihydroxyethyl betaine, etc. are used.

Examples of sorbitan nonionic surfactants include sorbitan laurate monoester, sorbitan balmitate monoester, sorbitan stearate triester, sorbitan stearate triester, sorbitan oleate monoester, sorbitan oleate triester, and others. Those to which ethylene oxide is added are used.

As other surfactants, quaternary ammonium salt type cationic surfactants and the like may be used in combination.

As the water-absorbing substance, glycerin, ethylene glycol, polyethylene glycol, polyvinyl alcohol, polyacrylic acid, polyvinylpyrrolidone, starch, calcium chloride, lithium chloride, etc. are used.

The styrene-divinibenzene copolymer-based microporous beads that retain each of the above components are resins in which the divinylbenzene portion acts as a crosslinking point for the styrene base, and have a pore size of 16 to 16 aoooi and 0.1 m6/g or more. It has a pore volume and is commercially available as the Mitsubishi Chemical Industries product Diaion HP series.

The deodorizing material is prepared by using a deodorizing agent consisting of an amphoteric surfactant, a nonionic surfactant, and a nonanol from about 0.001 to 5.
In a preferred embodiment, about 1 to 100 parts by weight of a water-absorbing substance is further added to 100 parts by weight of the 0% by weight aqueous solution, and then an organic solvent such as acetone, methanol, ethanol, etc. dissolved in the deodorant solution is added as an impregnation accelerator. about 5 to 1
Microporous beads are added to the mixed solution containing 00 parts by weight, and the mixture is left to stand or stirred under open or closed conditions at a temperature of room temperature to about 150°C, and then stirred under reduced pressure to evaporate and remove the organic solvent. This is done by

When the microporous beads are impregnated with the deodorant solution in this way, if the amount of impregnation is small relative to the amount of voids in the microporous beads, the aqueous deodorant solution will not adhere to the bead surface. Moreover, the impregnation operation is completed in a state in which beads do not adhere to each other. In addition, if the amount of impregnation is large compared to the amount of voids in the microporous beads,
In other words, when most of the organic solvent used is removed and the beads are impregnated with a highly concentrated aqueous deodorant solution, the organic solvent and water are evaporated by heating under open or reduced pressure conditions, and the adhesion between beads is prevented. Impregnation is carried out in such a way that it cannot be impregnated.

[Action] and [Effects of the Invention] An aqueous solution of a deodorant consisting of an amino acid or betaine type amphoteric surfactant, a sorbitan nonionic surfactant, and nonanol effectively decomposes bad odors; When an aqueous solution of the deodorant is used in liquid form by washing, brushing, spraying, etc., there are limits to its effective use as a deodorant.

However, in the deodorizing material of the present invention, the aqueous deodorant solution is impregnated into granular styrene-divinibenzene typical aggregate type microporous beads and held therein, so that it is not only extremely easy to handle; , it becomes possible to store it in any container, thereby expanding the range of use.

Furthermore, when a water-absorbing substance is used in combination, the evaporation of water is greatly suppressed and the water is retained continuously, so that it can exhibit a long-term deodorizing effect as a deodorizing material.

〔Example〕

Next, the present invention will be described in detail with reference to examples.

Example 1 50 g of a deodorant consisting of 7.5 parts by weight of alkyl polyaminoethylglycine hydrochloride, 5 parts by weight of a sorbitan nonionic surfactant, 0.2 parts by weight of nonanol and 87.3 parts by weight of water was further added to 50 g of water. 40 g of methanol was added to the dissolved deodorant aqueous solution, and 29 g of styrene-divinibenzene typical composite type microporous beads (Diaion HP 20, manufactured by Mitsubishi Chemical Industries, Ltd.) were added to this mixed solution. After mixing, the mixture was heated at 80° It was placed in a constant temperature electric dryer (C) and heated and dried until the weight decreased from 169 g to 79 g.

2.0 g of the deodorizing material made of steel in this way was
It was packed into a glass tube with a diameter of 0 mm and a length of 20t1, and both sides of the deodorizing material were fixed with glass filters. Air containing ammonia gas with a concentration of 15 pprrI was flowed through one side of the glass tube at a flow rate of 200 mJ+ per minute for 80 minutes, and the ammonia gas concentration in the air that had passed through the deodorizing material layer was measured after 80 minutes. It had decreased to 1 ppm or less.

Example 2 In Example 1, 30 g of deodorant and 40 g of methanol
g without adding water and 20 g of glycerin to prepare a mixed solution, which was then mixed with styrene-Hinni-Hensen combined microporous beads (Daiai, t
7HP-20) and then heated and dried at 80° C. until the weight decreased from 110 g to 70 g.

When this deodorizing material was subjected to a deodorizing test for ammonia gas in the air in the same manner as in Example 1, the ammonia gas concentration in the deodorized air was 1 ppm or less.

In addition, this deodorizing material 5. When OOg was placed in a lidless chalet with an inner diameter of 50 mm and left under conditions of 25° C. and 58% RH for 124 hours, the weight after drying was 4.36 g. Incidentally, when a similar drying test was conducted on a deodorizing material prepared without using glycerin but with an extra amount of deodorant to give 50 g, the weight after drying was 3.05 g. From this data, it is clear that the water retention effect when glycerin is present.

Claims (1)

[Claims] 1. A deodorizing material in which an amino acid type or betaine type amphoteric surfactant, a sorbitan type nonionic surfactant, and nonanol are held in styrene-divinylbenzene copolymer type microporous beads. 2. A deodorizing material in which an amino acid type or betaine type amphoteric surfactant, a sorbitan type nonionic surfactant, a nonanol, and a water-absorbing substance are held in styrene-divinylbenzene copolymer type microporous beads.