WO1985000378A1

WO1985000378A1 - Lubricant

Info

Publication number: WO1985000378A1
Application number: PCT/EP1984/000202
Authority: WO
Inventors: Diethelm Hess
Original assignee: Diethelm Hess
Priority date: 1983-07-07
Filing date: 1984-07-03
Publication date: 1985-01-31
Also published as: JPH0251960B2; DE3474836D1; EP0148232A1; EP0148232B1; DE3324475A1; JPS60501814A

Abstract

To provide a lubricant which may be removed by washing with the water, a water-soluble carrier is used which is preferably comprised of polyethylene glycol (500), wherein is introduced at least one lubricant preferably in the form of a wax and/or a fatty acid and/or a polysiloxane and/or finely dispersed silica, the water-soluble carrier representing approximately from 75 to 95 parts by weight and the lubricant, respectively the lubricants, admixed representing the remainder.

Description

lubricant

The invention relates to a lubricant that consists of several components.

The known lubricants often consist of mixtures of different mineral oils. Such substances are not water-soluble. However, it is not uncommon for lubricants to come into contact with textiles and to contaminate them. This danger exists, for example, in the case of lubricated towbars or door locks, particularly of motor vehicles. In many cases, however, there is a risk of contamination from the known lubricants

also the reason why no lubrication has been used up to now. This is the case, for example, with zippers sewn into clothing, which experience has shown can become stiff over time due to insufficient lubrication. In order to remove contamination caused by the burned lubricant, processing with a solvent or cleaning agent is usually necessary. However, this proves to be very cumbersome and costly and is therefore perceived as disadvantageous.

Proceeding from this, it is therefore the object of the present invention to provide a lubricant which can be washed out of textiles with water.

This problem is solved in a surprisingly simple manner by using fine water-soluble carrier material in which at least one lubricant is embedded in a fine distribution, the water-soluble carrier substance comprising about 75-95 percent by weight and the stored lubricant or the incorporated lubricants comprising the residual weight percentages.

The water solubility of the carrier material, which comprises a high proportion by weight, enables it to be washed out with water. The lubricants are practically washed out due to their low proportion by weight, without leaving stains. Processing with a cleaning agent or solvent is advantageously not required here. As experiments have shown, it is practically sufficient to carry out a normal washing process. Another advantage of the lubricant structure according to the invention is therein see that textiles or the accessories made of plastic, such as zippers etc., are not attacked by the lubricant. For this reason, it is also possible in an advantageous manner, technical articles integrated directly into the textiles, such as. B. zippers etc., which can become stiff in the course of time and for which no suitable lubricant was previously available, properly lubricate, which has a positive effect on the ease of use and on the service life. Another advantageous use can be, for example, the lubrication of glides for curtains or the running channels of curtain rails. But also when used to lubricate moving parts to which textiles are often exposed, such as. B. car locks, trailer couplings etc., the pollution risk that is eliminated compared to the prior art has an advantageous effect. The advantages that can be achieved with the invention can therefore be seen in particular in excellent economy.

In a further development of the superordinate measures, several lubricants of different particle sizes can be embedded in the carrier. Due to the different particle size, this results in particularly good sliding conditions in an advantageous manner.

In a further embodiment of the superordinate measures, the carrier substance can be a mono- or polyhydric alcohol and / or its ether and / or its ester. In experiments, the use of poly Ethylene glycol has been shown to be particularly preferred as a carrier. Carriers of this type advantageously offer a stable structure for storing lubricants, which is temperature-resistant over a wide temperature range. In addition, the desired viscosity can be adjusted easily and simply via the molecular weight. A mean molecular weight of 500 has proven particularly useful in tests. This practically results in an ointment-like physical state. By mixing several portions of the same carrier, each having a different molecular weight, it is advantageously possible to cover a large melting range at the same time. This ensures that the structure of the carrier cannot collapse within a small temperature range, which opens up a wide range of applications.

A further expedient configuration of the superordinate measures can consist in the presence of at least one lubricant in the form of a wax, such as a PE wax, ester wax or amide wax. Because of their particle shape and size, substances of this type can be easily washed out in an advantageous manner. At the same time, this advantageously results in a temperature resistance of up to approximately 150 ° C., so that the temperature resistance of the carrier material can be used within a wide range. If higher temperature loads are to be expected, the waxes can be replaced in whole or in part by silica, so that the temperature resistance of the carrier can be exploited even further. In a further expedient embodiment of the superordinate measures, at least one lubricant in the form of a fatty acid and / or its ester and / or its amide can be present. Because of their particle shape and size, fabrics of this type make an excellent addition to wax.

Another advantageous measure can be that at least one lubricant is in the form of polysiloxane. If such a lubricant is used, small amounts of lubricant are sufficient overall, which increases the amount of the washable carrier and has a positive effect on the flushing out.

Further advantageous refinements and expedient further training of the superordinate measures result from the remaining subclaims in connection with the example description below.

Some particularly preferred exemplary embodiments are explained in more detail below.

Example I: Experience has shown that zippers become stiff over time, which has an adverse effect on user-friendliness and service life. This problem can be remedied by lubrication with a suitable lubricant. The lubricant used for this purpose in tests consisted of 80 percent by weight of polyethylene glycol, 10 percent by weight of polyethylene wax and 10 percent by weight of erucic acid amide. The polyethylene glycol forms the carrier in which the polyethylene wax and the erucic acid amide are stored as lubricants in a fine distribution. The grease For this purpose, substances were stirred into the carrier under normal pressure and temperature.

The polyethylene glycol had an average molecular weight of 500. This resulted in an ointment-like aggregate state, which allowed a targeted application with the help of a small brush or a small spatula and still led to a good distribution. The average molecular weight of 500 was set by mixing several proportions of polyethylene glycol, each with a different molecular weight, in the range of 200-10,000. This resulted in a high melting range. Even at temperatures of the order of 150 °, the structure of the polyethylene glycol serving as a carrier had not yet broken down. The upper limit of the temperature load in the present example was the polyethylene wax. To improve the temperature resistance, the wax could simply be replaced in whole or in part by silica.

Long-term trials have shown that the lubricant used does not attack the plastic zipper or the surrounding textile material, which is a mixture of natural and synthetic fibers. A lubricant leak intentionally applied to the textile material could be washed out with the help of tap water. The use of heated water of about 4-5 ° has proven to be particularly useful.

The zippers lubricated with the lubricant had extremely low running resistance. Even stiff zippers were caused by a Lubrication runs extremely smoothly within a very short time. This is attributed to the favorable particle size and shape of the polyethylene wax and erucic acid amide. An increase could be achieved here by adding silica, the particle size of which is in the range between the particle size of polyethylene wax and erucic acid amide.

A particularly useful type of silica can be seen in the product offered by Degussa under the name Aerosil ^® . The addition of silica was about 2-3 percent by weight and was at the expense of the proportion of polyethylene wax.

Example II

In parallel long-term trials with a lubricant consisting of 90% by weight of polyethylene glycol, 9.8% by weight of polyethylene wacfcs and o, 2% by weight of silicone oil, the effects were similar to those of Example I. It should be noted that the washout process here is even easier than that of Example I. went. This is attributed to the fact that an even higher proportion of carrier is present. This was possible through the use of silicone oil. In the formulation according to Example II, too, the wax can be replaced in whole or in part by silica.

Below is a preferred device for lubricating strip-shaped elements, such as zippers and the like, explained in more detail with reference to the drawing.

The lubricating device shown in the drawing comprises a storage space 1 for lubricant, which is separated by a wall 3 provided with perforations 2 from a working space 4, which houses an applicator roller 5 and penetrated by an insertion slot 6 running transversely to the axis of rotation of the applicator roller 5 through which a zip fastener 7 fastened to a fabric strip 9 can be passed. The applicator roller 5, which is advantageously designed as a brush roller, is dimensioned and arranged such that it strips the wall 3 in the area of the perforations 2 and brings the lubricant emerging from the perforations 2 into the area of the insertion slot 6, ie transfers it to the zipper 7 . The application roller 5 is set in rotation by the zipper 7, which can be brought into engagement therewith and tangentially movable.

The working space 4 with the rotatably mounted application roller 5 is accommodated in a dimensionally stable housing 11 containing the perforated wall 3, onto which a housing 14 accommodating the storage space 1 can be plugged or screwed. The housing 14 can simply be designed as a tube or a rubber-elastic bottle, so that the lubricant contained therein can be simply pressed out by appropriately pressing the walls together. However, it would also be conceivable to provide an extrusion piston which can be actuated by a spring or a set screw. In this case, the perforations 2 are appropriately assigned a shut-off device in the form of a slide or the like. The clear width of the perforations 2 is dimensioned such that the lubricant particles embedded in the carrier material cannot clog them.

Claims

Expectations

1. Lubricant, which consists of several components, characterized by a water-soluble carrier, in which at least one lubricant is stored in a fine distribution, the water-soluble carrier comprising about 75-95 percent by weight and the stored lubricant or lubricants comprising the residual weight percentage.

2. Lubricant according to claim 1, characterized in that several lubricants of different particle sizes are used.

3. Lubricant according to one of the preceding claims, characterized in that a mono- or polyhydric alcohol and / or its ether and / or its ester is used as the carrier.

4. Lubricant according to claim 3, characterized in that polyethylene glycol is used as the carrier.

5. Lubricant according to claim 4, characterized in that polyethylene glycol with an average molecular weight of 500 is used as the carrier.

6. Lubricant according to one of the preceding claims, characterized in that at least one lubricant is present in the form of a wax.

7. Lubricant according to claim 6, characterized in that at least one lubricant is present in the form of polyethylene wax.

8. Lubricant according to one of the preceding claims, characterized in that at least one lubricant is present in the form of fatty acid and / or its ester and / or its amide.

9. Lubricant according to claim 8, characterized in that at least one lubricant is present in the form of erucic acid amide.

10. Lubricant according to one of the preceding claims, characterized in that at least one lubricant is present in the form of polysiloxane.

11. Lubricant according to claim 10, characterized in that at least one lubricant is present in the form of silicone oil.

Lubricant according to one of the preceding claims, characterized by a composition of 80 percent by weight polyethylene glycol 500, 10 percent by weight polyethylene wax and 10 percent by weight erucic acid amide.

13. Lubricant according to one of the preceding claims 1 to 1, characterized by a composition of 90 percent by weight polyethylene glycol 500, 9.8 percent by weight polyethylene wax and 0.2 percent by weight silicone oil.

14. Lubricant according to one of the preceding claims, characterized in that at least one lubricant is present in the form of silica.

15. Lubricant according to claim 14, characterized in that the proportion of silica is about 2-3 percent by weight and comes at the expense of the wax fraction.

Lubricant according to one of the preceding claims, characterized by its use for the lubrication of accessories connected to textiles, in particular zippers.