JPH01229708A - Friction increasing coating medium for car tire - Google Patents

Abstract

PURPOSE: To improve the adhesive strength and frictional force of a medium by using a natural resin having a specified clouding point as an adhesive material of the medium, using isopropanol or the like as a solvent, and specifying the weight ratio of the above materials. CONSTITUTION: This medium is used for increasing the friction between a vehicle tire and a road surface, and the medium is composed of at least one material having an adhesive effect and a solvent having high volatility used for the material. In this case, as the material, a natural resin having the clouding point of -15 deg.C or less is used, and as a solvent, isopropanol and trichloroethane are used. The weight ratio of these materials to be mixed is such that the natural resin is 30-60 wt.%, the isopropanol is 30-60 wt.%, and the trichloroethane is 5-10 wt.%. Thus, the medium can be favorably stuck to the vehicle tire, and especially in winter, the friction between the vehicle tire and the road surface can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Fields] The present invention is particularly applicable to y! The present invention relates to a medium for applying to vehicle tires to increase adhesiveness, consisting of at least one substance exhibiting an adhesive effect and a highly volatile solvent suitable for this adhesive substance.

[Problem to be solved by the invention J] When a vehicle or the like drives on a wet road or a road covered with water damage, the frictional contact between the vehicle and the road decreases, making it more likely that the vehicle will lose control. . In addition, a situation may arise in which the vehicle gets stuck somewhere and cannot be moved out of this state because the tires grip the road surface sufficiently.

For this purpose, the tires are usually equipped with anti-slip chains, or if the vehicle becomes stuck, anti-skid chains are used.

Another system developed in recent years involves applying a sticky liquid to a vehicle's tires to increase friction over time. Such a system, which is intended to be installed in motor vehicles, is disclosed in Norwegian Patent No. 165,715. Adhesive media for the same purpose are also sold in spray cans. In either method, the important thing is that
The adhesive medium used satisfies a number of requirements.

Among other things, the adhesive medium must exhibit adhesion over as wide a temperature range as possible, while at the same time adhering to the tire for a sufficient period of time to remove it from undesirable conditions.

Furthermore, the medium must be able to be applied quickly.

Despite the fact that systems for spraying such liquids which exhibit adhesion or cohesive effects with satisfactory application methods are known, there is still no superior adhesion compared to liquids previously developed for this purpose. What is desired is a medium that exhibits effectiveness and therefore 4° friction.

That is, object 1 of the present invention is particularly applicable to vehicle tires in order to increase the friction between the tires and the road surface, and moreover, to provide the largest possible gripping horns on dry and wet tires at low and high temperatures. The object of the present invention is to provide an improved medium that can provide a gripping force to the road surface, and at the same time maintain effective gripping force on various roads, especially during the winter season. The medium must also have good adhesion properties. That is, it must maintain its effectiveness for at least a predetermined period of time.

Another object of the invention is to provide a medium that is not harmful to the environment; in other words, it does not stain the environment and is also not harmful to tires. Furthermore, the medium must have properties that allow it to be easily stored over a very wide temperature range, both high and low.

A problem with previously known sticky media is that at temperatures below 0° C., solids precipitate out, sometimes at relatively high rates. This is a major drawback. This is because the precipitation of solids can easily result in clogging of the valves, nozzles and hoses used. This problem is particularly acute for permanently mounted devices. It is therefore also an object of the invention to eliminate this drawback.

Furthermore, existing liquids have little effect on gripping force at temperatures below 5° C. and are considered insufficient. In the case of known adhesives, the gripping force, that is, the adhesive force, is too fast;
In other words, it was decreasing by several hundred meters. It is also difficult to maintain a homogeneous quality, so that solids may precipitate, especially in the liquid, resulting in the above-mentioned consequences.

That is, it is also an object of the present invention to eliminate the above-mentioned drawbacks as much as possible.

This object can be achieved by the medium described above, with the features stated in the claims.

[Means for Solving the Problems] That is, the present invention provides a medium to be applied to a vehicle tire, in particular to increase the friction between the tire and the road surface, which comprises at least one substance exhibiting an adhesive effect and this adhesive substance. and a suitable highly volatile solvent, wherein the sticky substance is comprised of a natural resin with a cloud point below -15°C, the solvent is isopropanol and trichloroethane, and the weight ratio is 30 to 60% of the natural resin. % by weight, 30-60% by weight of isopropanol, and 5-60% by weight of trichloroethane.
IQiff amount% range, preferably about 35% each
%, about 55% by weight, and about 10% by weight M%, and if desired, a softener is included based on 100% of the solution.

DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION Although the materials used in the present invention may seem like obvious choices - for example, isopropanol is a commonly used solvent, the materials used in the claims may be When used in combination, it satisfies the above-mentioned requirements to a greater extent than previously known products, and yet provides a much improved gripping force compared to conventionally used media. In particular, selected natural resins with cloud points below 115° C. provide significant improvements in adhesion. "Cloud point" refers to the temperature at which solid components begin to precipitate or become cloudy in a liquid. A number of three types of resins were tried, including both synthetic and natural resins with low cloud points, but none yielded satisfactory results. To obtain satisfactory results, the cloud point of this medium should be -15°C or preferably below. This is because the temperature range in which the product must be stable is 0°C to -20°C.
That's why.

Selected natural resins with cloud points as described above are solvents,
That is, carefully co-Alized with isopropanol and tricrJCl ethane. Isopropanol does not affect the quality of the tire body and at the same time can be applied to tires in dry as well as wet conditions, but it reliably dissolves the resin. Also, isopropanol is relatively harmless to the environment.

When isobu[lpanol and trichloroethane are used together,
It has been found that a particularly good effect is obtained on the tackiness of the total liquid, ie the medium. Due to the high volatility of the solvent, the sticky medium dries quickly on the tire and produces the desired effect in a short time.

It may be appropriate to incorporate a small proportion of a softener into the medium to make the medium more elastic after application. Triethanolamine has been found to be particularly suitable as a softening agent.

Particularly preferred is the use of natural resins with a cloud point below 130°C, such as Chinese Lenone (Chinesercs in
) was found to be optimal.

In summary, it can be said that with the medium according to the invention adhesive or viscous liquids are obtained which allow the friction between the tire and the road surface to be increased as desired. Once applied, the medium sticks to the tire for a reasonable time, allowing the vehicle to be pulled out of an undesirable condition, while at the same time the medium is unaffected by the ambient temperature and remains in a softened state under any conditions. Moreover, it is not harmful to tires or the environment.

This medium can be easily applied with a spray can or with a device developed for this purpose, such as that disclosed in Norwegian Patent No. 156,715.

A preferred type of adhesive or tacky medium according to the invention is produced by the following method. Resin, i.e. cloud point is 130℃
Less than 100 ml of Chinese Lenone is ground and heated with 75% of the amount of isopropanol used. Stir at 40°C until all the resin is dissolved. The mixture is then cooled and, with stirring, the remaining isopropanol is added.

Trichloro[l-ethane and triethanolamine are then added to ensure that the adhesive remains elastic after application.

Weight ratio: 35% by weight of natural resin, 55% by weight of isopropanol
If at least 1 part of softener is added at 55% by weight of IH and chloroethane, the weight ratio is adjusted accordingly.

By using a specific resin having a predetermined composition and/or ratio of each resin acid and saturated/unsaturated fatty acids, the resulting liquid can reliably satisfy the above requirements, and has not only excellent adhesive properties but also low haze. It has features that will ensure you get points.

Note that, although the above medium is particularly applicable to vehicle tires, this medium can also be applied to other articles/products, such as shoe soles and various special devices. In other words, the medium of the present invention is generally applicable to areas where it is desired to increase friction against the support. Accordingly, many modifications are possible within the scope of the invention.

Claims (4)

[Claims] (1) A medium applied to vehicle tires, in particular to increase the friction between the tire and the road surface, comprising at least one substance exhibiting an adhesive effect and a highly volatile solvent suitable for this adhesive substance. In the medium, the sticky substance is made of a natural resin with a cloud point of less than -15°C, the solvent is isopropanol and trichloroethane, and the weight ratio is 30 to 60% by weight of the natural resin, 30 to 60% by weight of isopropanol, and trichloroethane in the range of 5 to 10% by weight, preferably about 35%, about 55%, and about 10% by weight, respectively;
A medium characterized in that, if desired, a softener is added to 100% of the solution. (2) The medium according to claim 1, wherein the softener is triethanolamine. (3) The medium according to claim 1, wherein the natural resin has a cloud point of less than -30°C. (4) The medium according to claim 1, wherein the natural resin is Chinese resin.