JP5918531B2 - Condom lubricant and condom coated with the same - Google Patents

Description

  The present invention relates to a condom lubricant and a condom coated with the condom lubricant.

  Conventionally, silicone oil has generally been used as a condom lubricant. Since silicone oil has a low surface tension, it can penetrate to the root of the condom when dropped onto the rolled-up condom, that is, has excellent penetration properties. For this reason, there exists an advantage that the adhesion prevention effect of rubber | gum is high. Furthermore, since it is a single component and is completely anhydrous, there is no need to add preservatives or surfactants that can cause adverse effects on the human body such as irritation, and there is no risk of deterioration (whitening) of the condom. Since the manufacturing process can be simplified, there is also an advantage that the process control and quality control are extremely easy.

  However, on the other hand, silicone oil has a major problem that it does not have sliminess and is inferior in lubricating performance when inserted into the vagina. In addition, silicone oil is water-repellent, and when it adheres to the skin or clothes, it is difficult to wash it off with water. For this reason, some structures which are going to solve the fault of the lubricant for condoms consisting of silicone oil are proposed (for example, refer to patent documents 1 and 2).

  Patent Document 1 discloses a lubricant in which an emulsion composed of a silicone oil and a surfactant is held in an aqueous gel in order to solve the disadvantages of the above-mentioned lubricant for condoms composed of silicone oil. Has been. Since such a structure is water-soluble, it can be easily washed away with water and has an appropriate sliminess.

  Patent Document 2 discloses a thickening spreadable temperature rising lubricant containing a mixture of propylene glycol and glycerin, a nonionic surfactant, a thickener, and a preservative. Here, since this structure is water-soluble, it is easy to wash away with water. In addition, although Carbopol 971 is used as a viscosity modifier to achieve thickening, this thickening reduces the penetration of the condom into the rolled-up part. Trying to solve.

Japanese Patent No. 3930240 Special table 2008-531497 gazette

  However, the lubricant in which the emulsion composed of the silicone oil and the surfactant in Patent Document 1 is held in the aqueous gel is emulsified by adding the silicone oil after mixing water and the surfactant. Separately from this, the gel is prepared by adding water to the gelling agent, and the gel and the emulsion are mixed. Furthermore, since the emulsion must be uniformly dispersed in the gel, the process management involved in the production becomes complicated, and the composition consists of many components, so that the quality control becomes complicated. Furthermore, since water is contained in the component, it is essential to add a preservative, which is not preferable in terms of safety as described above. In this way, while trying to solve the disadvantages of silicone oil, which is inferior in sliminess and difficult to wash away with water, the advantages of the lubricants consisting of the above-mentioned silicone oil, namely, process control, ease of quality control, and safety are achieved. It has been sacrificed.

  In addition, in the thickening extendable temperature rising lubricant containing a mixture of a polyhydric alcohol and glycerin, a nonionic surfactant, a thickening agent, and an antiseptic in Patent Document 2, a multicomponent blend is used. As with Patent Document 1, there is a problem in complicated process management and complicated quality control. Further, since surfactants and preservatives are included, there is a concern of irritation caused by them, which is not preferable in terms of safety. In this way, this configuration also attempts to solve the disadvantages of silicone oil that it is difficult to wash away with water. However, as described above, the advantages of lubricants made of silicone oil, that is, process control, ease of quality control, and safety Sex has been sacrificed.

  Therefore, the present invention is excellent in penetration and safety, which are the advantages of silicone oil, and easy in process control and quality control related to production, and in addition, is provided with sliminess and excellent cleaning properties. It is an object of the present invention to provide a condom lubricant that can solve even the disadvantages of silicone oil, and a condom coated with the same.

The present invention is composed of only two components of propylene glycol as a hydrophilic lubricant as a main agent and hydroxypropyl cellulose as a slime-imparting agent as an auxiliary agent, and propylene glycol: hydroxypropyl cellulose = 99. It is 99: 0.01-99.80: 0.20, and is a lubricant for condoms characterized by not containing water.

  Since the condom lubricant is mainly composed of a hydrophilic lubricant, cleaning with water is easy. Further, since the condom lubricant is an anhydrous system that does not contain water, it is not necessary to add a preservative that adversely affects the human body, which is preferable in terms of safety and does not cause the problem of deterioration (whitening) of the condom. . Further, by adding a slime-imparting agent, the lubricity during vaginal insertion is excellent. Since the condom lubricant is composed of only two components as a whole, the process control for manufacturing is simplified and the quality control is very easy.

The hydrophilic lubricant is propylene glycol .

  Propylene glycol (1,2-propanediol) is a compound that is very commonly used in pharmaceuticals and cosmetics, and is easily available. By using this as a main agent, a condom lubricant can be easily obtained. In addition, the surface tension is low, so it has excellent penetration into the condom roll-up area, and as a result, it has a high anti-adhesion effect and is easy to wash away with water, and there is no need to add a preservative or surfactant. No problems such as irritation caused by them occur.

The slime-imparting agent is hydroxypropylcellulose .

The present inventor found hydroxypropyl cellulose as a component capable of imparting sliminess to propylene glycol in an anhydrous system. In addition, an appropriate viscosity can be imparted by selecting hydroxypropylcellulose. Therefore, by adjusting the addition amount of hydroxypropyl cellulose, a good lubricant having a suitable sliminess and viscosity can be obtained without impairing the penetration into the rolled-up portion. Hydroxypropyl cellulose is also a compound that is very commonly used as an additive for pharmaceuticals and foods and is easily available. Furthermore, since a surfactant or preservative is not included, concerns such as irritation caused by them are solved.
In short, by using a two-component system composed of propylene glycol and hydroxypropyl cellulose, it is possible to solve all of the above-mentioned drawbacks while ensuring the above advantages of the lubricant for condoms composed of silicone oil.

  Furthermore, the present invention is a condom characterized in that the condom lubricant is applied.

  By applying the condom lubricant to the condom, it is possible to obtain a condom that can be easily managed in quality and easy in quality control.

  Since the lubricant for condoms of the present invention does not contain water, it is unnecessary to add a preservative, so that it is excellent in safety and does not cause whitening due to deterioration of the condom. In addition, there is an advantage that it can be easily washed away only with water. Furthermore, since it has a simple configuration consisting of only two components as a whole, it can be easily manufactured, so that the process management related to the manufacturing is simplified and the quality control is easy to perform. Therefore, the safety control and quality control of the condom coated with the condom lubricant are facilitated. In particular, when the condom lubricant of the present invention is composed of two components of propylene glycol and hydroxypropyl cellulose, it is necessary for actually producing it while ensuring sufficient performance such as sliminess, penetration, and cleanability. Management can be made easy.

Hereinafter, the hydrophilic lubricant as the main agent used in the present invention and the slime-imparting agent as the auxiliary will be described.
[Hydrophilic lubricant]
The hydrophilic lubricant in the present invention is selected from organic and inorganic lubricants that are hydrophilic and do not adversely affect the human body. Preferred hydrophilic lubricants include organic water-soluble polyhydric alcohols. Particularly preferred hydrophilic lubricants include propylene glycol, which has suitable lubricity as a condom lubricant, has high penetration due to low surface tension, and is easy to wash after use. It is done. By applying the hydrophilic lubricant to the condom, a suitable feeling of use can be obtained, and the hydrophilic lubricant can be easily washed away from the skin surface simply by washing with water.

[Sliming agent]
In the lubricant for condoms of the present invention, a slimming imparting agent is added to adjust the sliminess of the lubricant. As the slime-imparting agent, hydroxypropylcellulose, an organic compound that is very commonly used as an additive for pharmaceuticals and foods, is desirable. When adding hydroxypropylcellulose, it is desirable that the mass ratio is propylene glycol: hydroxypropylcellulose = 99.99: 0.01 to 99.80: 0.20. If the hydroxypropyl cellulose is added excessively, the viscosity of the lubricant becomes too high and the penetration property deteriorates. As a result, when the lubricant is applied, the lubricant cannot penetrate to the base of the condom. . On the other hand, when the addition amount of hydroxypropyl cellulose is less than the above range, the wettability of hydroxypropyl cellulose is not sufficiently exhibited in the lubricant.

  As described above, the present invention newly finds hydroxypropylcellulose as a suitable slime-imparting agent for hydrophilic propylene glycol while ensuring the penetration property equivalent to that of conventional products (for example, silicone oil) as a condom. This is a major feature.

Hereinafter, the Example which actualized the lubricant for condoms of this invention is described in detail.
In addition, this invention is not limited to the Example shown below, A design change is possible suitably.

[Examples 1 to 6]
Propylene glycol (made by PG Asahi Glass Co., Ltd.) and hydroxypropyl cellulose (made by HPC KLUCEL Hercules Incorporated, Aqualon Division) were mixed and stirred at a ratio shown in Table 1 below to produce a lubricant for condoms. 0.5 ml of the condom lubricant is applied to the rolled-up condom by a drop-type application, and the penetration of the condom lubricant into the condom, the application status, the wetness of the condom lubricant, and easy water washing I investigated.

  The penetration into the condom was measured by the length unit (cm unit) to which extent the lubricant dropped onto the rolled up condom penetrated from the tip of the condom toward the root.

[Comparative Example]
Using only silicone oil as the condom lubricant, the penetration of the condom lubricant into the condom, the application status, the wetness of the condom lubricant, and the ease of water washing were examined in the same manner as in the above example.

[Reference example]
As a reference example, a condom lubricant composed only of propylene glycol was cited.

  Table 1 shows the state of penetration of the condom lubricant obtained in the above Examples, Comparative Examples, and Reference Examples into the condom, and Table 2 shows the sliminess and ease of water washing.

* 1 Tactile sensation when applying lubricant to fingers was compared.
A: Sufficient slimming ability B: Good slimming ability X: No slimming ability * 2 Ease of washing when the lubricant on the finger was washed with water was compared. .
◎: Easily washed away with water ×: Difficult to wash away only with water

  As shown in Table 1, propylene glycol: hydroxypropyl cellulose = 99.98: 0.02 to 99.80: 0.20 In Examples 1 to 6 in a mass ratio, a comparative example is also provided inside the rolled up condom. The condom lubricant penetrated sufficiently. However, in Example 6 in which propylene glycol: hydroxypropyl cellulose = 99.80: 0.20 mass ratio, the viscosity was higher than in the other examples, so that there was a slight delay in penetration.

  Moreover, about the lubricant for condoms of Examples 1-6, the moderate slimming property required at the time of vagina insertion was felt, and it was able to wash away easily by water washing.

  In the comparative example using only silicone oil, the penetration into the rolled-up part was good, but it was difficult to wash away the condom lubricant attached to the finger with only water.

  In the reference example using only propylene glycol, the penetration into the roll-up part was good. On the other hand, the penetration is good, but the sliminess is inferior, so the lubricity during vaginal insertion is poor.

  The method of applying the condom lubricant of the present invention to the condom is not limited to the dropping type application, and may be a known method such as a method of winding the condom after application.

Claims (2)

It is composed of only two components of propylene glycol as a hydrophilic lubricant as a main agent and hydroxypropyl cellulose as a slime-imparting agent as an auxiliary agent, and propylene glycol: hydroxypropyl cellulose = 99.99: 0. The lubricant for condoms characterized by being 01-99.80: 0.20 and not containing water. A condom coated with the lubricant for condoms according to claim 1.