JPH01164371A - Deodorant - Google Patents

Abstract

PURPOSE:To obtain a harmless safe deodorant widely utilizable in various fields of a sanitary article, a tray, raw garbage, a car, a refrigerator, a kitchen, a boot cupboard, a barn or the like, by containing a maleic anhydride copolymer. CONSTITUTION:As a maleic anhydride copolymer to be used, an ethylene/maleic anhydride copolymer, a methyl vinyl ether/maleic anhydride copolymer and an isobutylene/maleic anhydride copolymer are suitable. Especially, the methyl vinyl ether/maleic anhydride copolymer is suitable. In the compounding of various base agents, verious shapes such as a liquid, a powder, a sheet, a solid form foam, a spray form, a gel or a capsule can be used. For example, in the case of the solid form, only the maleic anhydride copolymer is used as an effective component or said copolymer is desirably contained in a compounding ratio of at least 0.1wt.% or more. In the case of the powder, the compounding of an excipient is desirable because it is necessary to make the copolymer easy to process and the amount of the effective component is set to 0.1-80wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to deodorants and deodorizers containing a maleic anhydride copolymer as an active ingredient, such as sanitary products (e.g.
A harmless and safe deodorizer that can be widely used in fields such as disposable diapers, breast milk pads, portable toilets, sanitary napkins, sheets, etc.), toilets, garbage, cars, refrigerators, kitchens, shoe cabinets, and livestock barns. Our goal is to provide the following.

(Prior art) Various methods have been proposed to remove bad odors such as mercaptans, hydrogen sulfide, and ammonia. or inorganic and organic deodorization methods using chemical reactions.
Deodorizers, etc. are used. Among these, there are few reports of organic deodorizing/deodorizing agents that utilize chemical reactions, such as organic polymer compounds, and JP-A No. 62-53658
No. 1, JP-A-62-57556, JP-A-62-
101252 and Japanese Patent Publication No. 1983-9070.

(Problems to be Solved by the Invention) The present inventors found that there are few research reports on organic polymer-based deodorizing and deodorizing agents that utilize the above chemical reactions, and furthermore, the deodorizing and deodorizing effects are not very strong. They focused on the fact that it was not only a simple product, but also completely satisfactory in terms of sustainability and safety.

(Means for Solving the Problems) In order to improve the above-mentioned drawbacks, the present inventors have conducted various studies on organic polymer compounds. The present invention was completed by discovering that the combination has a remarkable deodorizing and deodorizing effect.

The maleic anhydride copolymer used in the present invention includes:
Ethylene-maleic anhydride copolymer [Product name: EMA (
manufactured by Monsando)],] Methyl vinyl ether-maleic anhydride copolymer Product name: GANTRE
Z) Manufactured by GAF, e.g. AN-119, AN-139, A
N-149゜AN-169, AN-179, etc.], isobutylene-maleic anhydride copolymer [trade name: Isopan (
(manufactured by Kuraray)] etc. Among these, methyl vinyl ether-maleic anhydride copolymer is particularly suitable. In addition, the maleic anhydride copolymer can be used with other deodorizing/deodorizing organic polymer compounds (e.g., polyacrylic acid or its salts, acrylic copolymers) or organic acids (e.g., citric acid, oxalic acid, glycol). Acid, malic acid, lactic acid, tartaric acid, succinic acid, adipic acid, maleic acid, phthalic acid,
malonic acid, benzoic acid, ascorbic acid, L-ascorbic acid, nicotinic acid, pyrocatechol, pyrogallol, gallic acid), natural plant extracts, surfactants, aldehyde compounds, inorganic compounds (e.g. activated carbon, zeolite, silica gel, etc.) , or a bactericidal agent (for example, parabens, photosensitizers, nonionic surfactants), etc. can be blended as appropriate.

Suitable diluents include, for example, ethers (ethyl ether, dioxane, methylcarpitol, tetrahydrofuran, etc.), esters (methyl acetate, ethyl acetate, etc.), ketones (acetone, etc.).

cyclohexanone, methyl ethyl ketone, etc.), lactams or lactones (2-pyrrolidone, N-methyl-2-pyrrolidone, N-vinyl-2-pyrrolidone, butyrolactone, etc.), hydrocarbons (benzene, toluene, xylene,
(hexane, tE oil, etc.).

The solvent is an organic solvent such as acetic acid, but is not limited to these organic solvents, and any solvent that does not react with the maleic anhydride copolymer can be used.

Also, fragrances, inorganic compounds (zinc oxide, activated carbon, zeolite, silica gel, talc, kaolin, aluminum chlorohydrates, aluminum zirconium chlorhydrates, aluminum chloride, buffered aluminum sulfate)
, liquefied gases, resins, gelling agents (sodium alginate,
It can also be blended with excipients such as carrageenan, sodium polyacrylate, etc.).

The present invention can be used in various forms such as liquid, powder, sheet, solid, foam, spray, gel, and capsule form in combination with various bases. Moreover, among maleic anhydride copolymers, methyl vinyl ether
Maleic anhydride copolymer has the property of forming a film when used in liquid, spray, or gel form, so it can be used on cloth, nonwoven fabric, paper, nonwoven paper, pulp, cotton, wood, glass, metal, porous resin. It can also be used in the form of impregnation, coating, or spraying on plastics, ceramics, etc. Especially in the case of spray form, a film is formed by spraying directly on the source of the odor, so it is easy to use and has a long-lasting deodorizing effect. etc. is very good.

The amount of the maleic anhydride copolymer, which is an active ingredient, needs to be determined depending on the type and area of the source of the malodor. In addition, various base materials are mixed depending on the shape, so
Although the blending ratio of the maleic anhydride copolymer, which is an active ingredient, varies, for example, in the case of solid form, it is desirable to use only the active ingredient or to contain it in an amount of at least 0.1% by weight. In addition, in the case of powder, it is necessary to make it easy to process into powder, so it is desirable to mix it with an excipient, and the amount of active ingredient is 0.
It is used in a range of 1 to 80% by weight. In addition, in the case of foam, spray, gel, and capsule forms, it is necessary to mix with various excipients, so the active ingredient is 0.1 to 95% by weight, preferably 0.5 to 80% by weight. , more preferably 1.0 to 50%. In addition, in the case of sheet form, the weight % is 1 to 70 g/rd, preferably 3 to 50 g/n?
, more preferably adjusted to 5 to 30 g/rrr, and how to use deodorants and deodorizers made of these shapes include disposable diapers, breast milk vats, portable toilets, menstrual toilets, etc. Hygiene products such as sanitary napkins, wet tissues, toilet paper, sheets, shoe insoles, armpit deodorizing pads, toilets, garbage, cars, refrigerators,
It can be used in a wide range of applications, including as a deodorizer for kitchens, shoe closets, pet excrement from birds, dogs, cats, etc., and in places where bad odors are likely to occur, such as livestock barns.

(Function/Effect) The deodorizing and deodorizing effects of the maleic anhydride copolymer, which is the active ingredient of the present invention, are thought to be due to chemical reactions, and the reaction with ammonia or mercaptans is as shown below. Since a ring-opening reaction occurs due to the reaction with the anhydride contained in the polymer, it is thought to have deodorizing and deodorizing effects by incorporating ammonia odor or mercapto odor, which is the source of bad odors.

Therefore, the maleic anhydride copolymer of the present invention is industrially very useful as a deodorizing agent and as a deodorizing agent for molding for various uses.

The present invention will be explained in more detail below with reference to Examples and Test Examples.

Example 1 Methyl vinyl ether was added to 10 g/rrr.
The same water-absorbing paper was covered with a water-absorbing paper in which a maleic anhydride copolymer (manufactured by Gantlef F GAF) was dispersed and embossed to obtain a deodorizing sheet of the present invention.

Example 2 Example 1 using ethylene-maleic anhydride copolymer (F, MA manufactured by Monsando) so as to give 15 glrd
processed in the same way.

Example 3 A nonwoven fabric in which a methyl vinyl ether-maleic anhydride copolymer (manufactured by Gauntlet GAF) was dispersed at a concentration of 15 g/nf and a nonwoven fabric containing a water-absorbing polymer of 20 g/d were laminated together to form a fabric of the present invention. A deodorizing sheet was obtained.

Test Example 1 The sheets obtained in Examples 1.2 and 3 were cut into 5×5 marks and placed on the bottom of a 300 m1 beaker.A water-absorbing paper to which the resin of the present invention was not added was used as a control.

1 ml of 1% ammonia water was taken and dropped onto each sheet, and the mouth was immediately sealed with rose film. Five panelists were asked to smell the odor at regular intervals, and their deodorizing effects were judged. (The results are shown in Table 1) The criteria for evaluation are as follows.

◎ Odorless △ Slight odor × Strong odor Table 1 As is clear from the results, the usefulness of the deodorized molded product of the present invention is supported.

Claims (1)

[Claims] A deodorizing agent characterized by containing a maleic anhydride copolymer.