JP2000169732A - Mildewproof resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a resin composition having excellent mildewproof effects by mixing and kneading imazalil (or its salt) into a thermoplastic resin. SOLUTION: Imazalil, i.e., 1-[2-(2,4-dichlorophenyl)-2-(2-propyloxy)ethyl]-1H- imidazole, is a mildewproof agent approved as a food additive. Preferably, imazalil is used as it is, though its sulfate or nitrate is also used. The objective composition can be prepared by melting a thermoplastic resin at a temp. of 150-300 deg.C for instance, and mixing and kneading thereinto imazalil (or its salt). The amount of imazalil (or its salt) mixed into the resin is preferably 0.01-3.0 wt.% of the resin. Imazalil (or its salt) is stable at the processing temperature (200 deg.C or higher) of the composition and does not deteriorate the basic properties of the resin, thus giving a mildewproof resin composition useful for electric appliances, packaging films, building materials, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a mold-resistant resin composition.

[0002]

Various additives such as a plasticizer, an antioxidant, a filler and an antistatic agent are used in the processing of plastics, and a fungicide is also an important additive in plastic processing. It is. By the way, the processing temperature of plastics is almost 200 ° C. or more, and a fungicide for plastics must be stable at this processing temperature, and it is not sufficient to have only mildew resistance. The present invention provides a fungicide for a resin that withstands high temperatures during processing of a plastic, does not impair the basic performance of the plastic, and has a high antifungal property, and a fungicide resin composition treated with the fungicide. The task is to do this.

[0003]

SUMMARY OF THE INVENTION The present invention provides a fungicidal resin composition obtained by kneading imazalil or a salt thereof in a thermoplastic resin, and kneading imazalil or a salt thereof in a molten thermoplastic resin. It is intended to provide a method for producing a fungicide-resistant resin composition to be incorporated, and a fungicide for kneading a resin, containing imazalil or a salt thereof as an active ingredient.

[0004]

DETAILED DESCRIPTION OF THE INVENTION Imazalil used in the present invention is a food additive whose chemical name is 1- [2- (2,4-dichlorophenyl) -2- (2-propyloxy) ethyl] -1H-imidazole. It is an antifungal agent approved in Japan, and is also used in the form of sulfate, nitrate and the like. In the present invention, the use of the imazalil drug substance is preferred.

[0005] The thermoplastic resin used in the present invention is not particularly limited, and examples thereof include polyvinyl chloride, polyolefin, acrylonitrile-butadiene-styrene copolymer resin, polyamide, and polyester resin. The fungicidal resin composition of the present invention in which imazalil or the salt is kneaded is used for household appliances, OA equipment, packaging films, agricultural films, food belts, tents, sheets, ropes, PVC pipes It is useful for preventing mold contamination of coated electric wires, building materials, and various resin molded products.

The anti-mold resin composition of the present invention is produced by melting a thermoplastic resin usually at 150 to 300 ° C., adding imazalil or a salt thereof and kneading it. Imazalil or the salt can be used as it is when added, or can be used as a masterbatch previously melted and mixed with the thermoplastic resin. Incidentally, when producing the mold-resistant resin composition of the present invention in this way, usually used additives, for example,
Plasticizers, antioxidants, coloring agents, insect repellents, flavoring agents, antibacterial agents, other fungicides, and the like may be added at the same time.

In the antifungal resin composition of the present invention, the amount of imazalil or the salt kneaded into the thermoplastic resin is usually 0.01 to 100 parts by weight of the thermoplastic resin.
To 3.0 parts by weight, preferably 0.05 to 1.0 part by weight.

[0008] The antifungal resin composition of the present invention comprises Aspe
rgillus, Penicillium, Cla
genus dosporium, Gliocladium, C
It has an antifungal effect against molds such as Haetium.

[0009]

The mildew-proofing treatment of the thermoplastic resin using imazalil or the salt of the present invention exerts the mildew-proofing property against a wide range of molds.

[0010]

The present invention will be described below in detail with reference to examples. But,
The present invention is not limited to these examples.

Formulation Example 1 0.5 to 1.0 g of imazalyl sulfate is added to 1 kg of a polyvinyl chloride resin melted at 150 ° C. to prepare a 1 mm thick sheet. Formulation Example 2 1.0 to 2.0 g of imazalil was added to 1 kg of a polypropylene resin melted at 200 to 230 ° C., and the thickness was 2 mm.
Mold plate. Production Example 3 A prepared by melting 2.0 g of imazalil at 210 to 240 ° C.
It is added to 1 kg of BS resin to form a 2 mm thick plate.

Next, an example of a fungicide test will be described. Test Example 1 The mold-resistant resin composition of the present invention obtained according to Production Example 1 was subjected to Aspergi according to the halo method (JIS-Z2911).
lplus niger FERM S-1, Penic
illium ctrinum FERM S-5, C
ladosporium cladosporioid
es FERM A fungicide test was performed using molds of S-8. Imazalyl sulfate, 0.05% by weight, 0.1%
The fungicidal resin composition of the present invention added by weight%
It showed fungicidal effect against all molds of the species.

Test Example 2 The antifungal resin composition of the present invention obtained according to Production Example 2 was subjected to Aspergi according to the halo method (JIS-Z2911).
lplus niger FERM S-1, Penic
illium ctrinum FERM S-5, C
ladosporium cladosporioid
es FERM A fungicide test was performed using molds of S-8. The fungicidal resin composition of the present invention to which imazalil was added in an amount of 0.1% by weight or 0.2% by weight exhibited an antifungal effect against all three molds.

Test Example 3 The fungicidal resin composition of the present invention obtained according to Production Example 3 was subjected to Aspergi according to the halo method (JIS-Z2911).
lplus niger FERM S-1, Penic
illium ctrinum FERM S-5, C
ladosporium cladosporioid
es FERM A fungicide test was performed using molds of S-8. The fungicidal resin composition of the present invention to which imazalil was added in an amount of 0.2% by weight exhibited a fungicidal effect against all three molds.

[0015]

According to the present invention, the antifungal treatment of a thermoplastic resin using the compound of the present invention, imazalil or a salt thereof, has an excellent antifungal effect.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masaki Kubota F-term (reference) 4H011 AA02 AA03 BA01 BB09 BC19 DC05 DH27 4J002 AA001 EU116 FD186 GA01 at 4-17-28 Chuo, Edogawa-ku, Tokyo, Japan GG02 GQ00

Claims (3)

[Claims] 1. A mold-resistant resin composition comprising imazalil or a salt thereof kneaded in a thermoplastic resin. 2. A method for producing a fungicidal resin composition, which comprises kneading imazalil or a salt thereof into a molten thermoplastic resin. 3. A fungicide for kneading a resin, comprising imazalil or a salt thereof as an active ingredient.