Mosquito repellent spray easy to wash

Abstract

The invention relates to an easy-to-wash mosquito-repellent spray, which is prepared by taking a composition of deet, mosquito repelling alcohol, paragliptin, dimethyl phthalate and citronellal as a main component of a medicament, taking lauryl alcohol polyoxyethylene ether as a surfactant and taking medical alcohol as a solvent, is simple in preparation process, easy to wash, free of greasy feeling in contact with skin and long in mosquito-repellent time, ensures the product consistency, and can be used for preparing a mosquito-repellent liquid. The daily life requirements are met.

Description

Technical Field

[0001] This invention relates to an easy-to-rinse mosquito repellent spray, which falls under the category of daily chemical technology. Background Technology

[0002] There are two main methods to combat mosquitoes: one is to use insecticides to kill mosquitoes; the other is to use repellents, which prevent mosquitoes from finding their targets by masking or blocking their olfactory system. However, insecticides are toxic, unsuitable for skin contact, and not suitable for widespread use in daily life.

[0003] Repellents include chemically synthesized products and natural plant extracts. Chemically synthesized products such as IR3535 (2-ethyl-1,3-hexanediol), DEET (N,N-diethyl-m-toluamide), picaridin (isobutyl hydroxyethylpiperidine carboxylate), and ethyl butyl ethyl acetate (butyl acetylaminopropionate) are currently recognized as safe and effective mosquito repellent ingredients, and are recommended by the US EPA (Environmental Protection Agency), CDC (Centers for Disease Control and Prevention), and AAP (American Academy of Pediatrics). Natural plant extracts include citronellol, citronellol, linalool, terpineol, menthol, geraniol, and eucalyptol.

[0004] Natural plant extracts are generally used as components in mosquito repellents, and they are usually mixtures. For example, the invention patent CN201510529464.6 discloses a mosquito repellent composition and its preparation method for mosquito repellent liquid, which uses plant extracts such as mosquito repellent grass, mugwort, lavender, orange blossom, geranium, and marigold. Among them, orange blossom is rich in citronellol, and geranium is rich in geraniol, citronellol, linalool, etc. The effective components vary greatly due to different plant origins, making it impossible to prepare a consistent product.

[0005] Mosquito repellent sprays made from chemically synthesized products generally leave a greasy feeling on the skin upon contact, requiring the use of detergent to rinse them off.

[0006] To address the above shortcomings, this invention provides a mosquito repellent spray that is easy to rinse, non-greasy, and ensures product consistency. Summary of the Invention

[0007] The purpose of this invention is to provide a mosquito repellent spray product that is simple to prepare, easy to rinse, non-greasy on the skin, and ensures product consistency, thereby meeting daily life needs.

[0008] To achieve the above objectives, the present invention employs the following steps:

[0009] 1. The main active ingredient of the mosquito repellent spray is a combination of two or more of the following: N,N-diethyl-m-toluamide (DEET), 2-ethyl-1,3-hexanediol, picaridin (isobutyl hydroxyethyl piperidine carboxylate), ethyl butyl ethyl acetate (ethyl butyl acetylaminopropionate), and citronellol. The volume percentage of these ingredients in the mosquito repellent spray is 15-30%.

[0010] 2. Laureth polyoxyethylene ether is used as a surfactant, and its volume percentage in the mosquito repellent spray is 1-5%.

[0011] 3. Prepare mosquito repellent spray using medical alcohol as a solvent.

[0012] The composition ratio (V / V%) of the mosquito repellent spray is as follows:

[0013]

[0014] The sum of the components DEET, IR3535, picaridin, IR3535, and citronellol constitutes 15-30% of the total volume of the mosquito repellent spray.

[0015] Dissolve the above components in medical alcohol under stirring in the specified proportions, mix well, and then fill into a container to produce a mosquito repellent spray. Take precautions against fire and explosion during the mixing and filling process.

[0016] The advantages of this invention are:

[0017] Using a combination of DEET, picaridin, IR3535, and citronellal as the main active ingredient in mosquito repellent sprays can have a synergistic effect, increasing the mosquito repellent effect. Using lauryl alcohol polyoxyethylene ether as a surfactant in mosquito repellent sprays can reduce the greasy feeling of mosquito repellent sprays when in contact with the skin and make them easier to rinse off. Using medical alcohol as a solvent can easily dissolve the active ingredient components evenly and also has its own bactericidal and disinfectant properties.

[0018] Appendix Explanation

[0019] Appendix 1: The proportions of each component and their mosquito-repellent effects in each embodiment.

[0020] All reagents are commercially available products for direct use; among them, citronellal is a commercially available chemically synthesized product with a purity of no less than 96%. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments:

[0022] Add the components in proportion to a beaker, stir and mix for 1 hour, and then fill the container.

[0023] Mosquito repellent effect and skin sensation test:

[0024] Test environment: Bamboo grove on the mountainside, in a natural ecological environment, the main mosquito species is Aedes albopictus;

[0025] Tested by male employees themselves;

[0026] Test conditions: Clothing: upper body bare, sprayed with mosquito repellent; lower body jeans. In Example 1, no mosquito repellent was sprayed at the beginning, but in subsequent experiments, mosquito repellent was sprayed.

[0027] The outdoor temperature is 26-35℃, and the bamboo garden is slightly shady and not particularly humid; there are still water droplets on the bamboo leaves after a light rain; the staff use umbrellas to prevent the water droplets on the bamboo leaves from washing away the mosquito repellent.

[0028] Experimental Records: Only the upper body was sprayed with mosquito repellent. Four hours after spraying, the upper body was free of mosquito bites when entering the bamboo forest. In the first experiment of Example 1, mosquitoes concentrated on attacking the thighs and calves, biting through the pants. It was necessary to reapply mosquito repellent spray to the pants before being able to sit comfortably in the bamboo forest until the specified time, which was 10 hours after self-spraying. In subsequent experiments, the pants were also sprayed at the beginning. The mosquito repellent time is from the time of spraying the mosquito repellent until one mosquito bites the upper body. If there are still no mosquito bites after 10 hours, the mosquito repellent time is ≥10 hours.

[0029] Table 1. Proportions (V / V%) of each component in each example, as well as mosquito repellent effect and skin sensation.

[0030]

[0031] The skin of the sprayed control samples 1 and 2 felt somewhat oily. Even after rinsing with water, the skin still felt oily, and the water dripped off in beads. It only felt normal after applying and rinsing with shower gel. After spraying the samples in Examples 1 to 7, the skin did not feel oily. After rinsing with water, the skin did not feel oily.

[0032] In addition, compared with control samples 1 and 2, the mosquito repellent time of Examples 1 and 2 was slightly longer than that of the control samples, which may be due to the presence of surfactants, which prolongs the time that the mosquito repellent stays on the skin.

[0033] It should be noted that the specific embodiments described above enable those skilled in the art to gain a more comprehensive understanding of the present invention, but do not limit the present invention in any way. Therefore, although the embodiments in this specification have described the present invention in detail, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention; and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the present invention patent.

Claims

1. An easy-to-rinse mosquito repellent spray, characterized in that, The mosquito repellent spray is composed of a main agent, a surfactant, and medical alcohol. The main agent is a combination of two or more of the following: N,N-diethyl-m-toluamide (DEET), 2-ethyl-1,3-hexanediol, picaridin (isobutyl hydroxyethylpiperidine carboxylate), ethyl butyl methacrylate (ethyl butyl acetylaminopropionate), and citronellol, accounting for 15-30% of the total volume (V / V%) of the mosquito repellent spray. The surfactant is lauryl alcohol polyoxyethylene ether, accounting for 1-5% of the total volume of the mosquito repellent spray. Medical alcohol is used as a solvent. The composition ratio (V / V%) of the mosquito repellent spray is as follows: The sum of DEET, IR3535, picaridin, IR3535, and citronellol is 15-30% of the total volume of the mosquito repellent spray.

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