US1201625A - Drying-oil and process of making same. - Google Patents

Description

HANS REES, or n ssELnonr, GERMANY.

DRYING-011mm rnoonss or MAKING SAME.

No Drawing.

To all whom it may concern:

Be it known that I, HA'Ns REES, citizen of Germany, residing at Dusseldorf, Germany, have invented certain new and useful Improvements in Drying-Oil and Process of Although the thin film then formed may feel dry, the layer is not homogeneous and the difierence between the -dry'linoxyn and the still wet mineral oil is; easily distinguished. It is possible to separate the mineral oil fromsuchmixture by extraction or centrifugal action. In mixtures of rapidly dryingve getable oils, such as varnish, with mineral oils, the latter readily separate and accumulate on the surface-of the coating, forming a damp greasy layer on the same. In .all these cases the mineral oil is only apparently dry and thus the mixture of a dry oil or varnish with mineral oil is considered to deteriorate the quality of the former. very considerably.

The object of the present invention is'not only to avoid the above named disadvantages, but also to render the mineral oil actu-' ally capable of drying. I attainthis object bymixing mineral oils perfectly free from'paraflin, and having a freezing point of about 30 degrees C. and a boiling point of preferably 300 degrees C. to 310 degrees 0., either in hot or cold condition, with a vegetable oil or vegetable oil mixture, thickened either by continuous boiling, by oxidation, or by vulcanization, and then adding drying substances to produce varnish.

Thus, as an example, 100 parts by weight of linseed oil and parts by weight of wood oil are thickened by continuous boiling and, on the completion of this process, 500-700 parts by weight of mineral oil free from paraflin and having a boiling point of 300310 C. are added. Or 100 parts by Weight of linseed-oil and 50 parts by weight of wood oil are thickened at a corresponding temperature by feeding in air or oxygen, and on the completion of the Specification of Letters Patent.

Patented Oct. 17, 1916.

Application filed June 24, 1316. Serial No. 105,687.

process are mixed with 500700 parts by weight of a mineral oil free from parafiin.

Or again, 100 parts by weight of linseed oil and 50 partsof wood oil are vulcanized at a corresponding temperature with'23% of flower of sulfur or a corresponding quantity of chlorid of sulfur and on completion of the process, from 500700 parts by weight of mineral oil free of paraflin are added. Owing to the high boiling point of the mineral o1l, 1 t is possible to carry out the process descrlbed of thickening the oil, in the presence of the mineral oil and in this case products richer in quality are obtained. Dry ng substances are added according to requlrements, z. 6. according to the drying properties required of the varnish to be produced from the mineral oil rendered driable. The non-volatile mineral oils of high boil mg point hitherto employed for merely mixlng with varnishes always contained a large amount of paraffin and Were consequently not proof against the cold. It is an important feature of the present invention that mineral oils be employed, which are not only absolutely proof against the cold but also perfectly free from paraffin. From 10 to 15% ofparaflin oil thickened 1n the above described! manner to a kneadable degree will be suflicient to render a perfectly parafiin-free mineral oil capable of being dried to a homogeneous elastic degree wlthin a normal period of time, which period may be reduced to the shortest one of about 7 hours by adding suitable drying agents. In every case the coating film obtained will be dry to the touch, and form a homogeneous whole, the individual constituent parts of which cannot be mechanically separated. This constitutes an extraordinary technical efl'ect.

A varnish prepared in the above described manner may consist of from 80 to 90% of mineral oil, and will not difi'er from a pure o1l varnish in its technical qualities for painting and varnishing purposes, while mixtures of linseed oil varnish, with only obj ecfrom this mineral oil thus rendered capable Well suited for making, all kinds of varof rust-proof coatings. Mineral oil, thus rendered capable of drying is particularly nishes from resins and copals, a purpose for which it has hitherto been impossible to employ mineral oils.

I am aware that the obtaining of mineral Oils of high boiling point and entirely free from paraffin is known; the separation of parafiin from mineral oils containin the same is based on the fact that para n is rendered solid on cooling the mineral oil and is eliminated by being pressed out. The greater the degree of cold employed, the more easy and more perfect will be the separation of the paraffin.

I claimasemyinvention i- 7 1. A composition of matter, comprising an admixture of thickened vegetable oil and a mineral oil having a. boiling point of approximately 300 degrees C. and being free of paraflin.

2. A composition of matter, comprising an r mixture of thickened vegetable oil with a preponderating quantity of a mineral oil having a boiling point of approximately 300 degrees C. and being free of 3. The herein described process of producing an oil composition, Which consists 'in admixing thickened vegetable oil With mineral oil having a boiling point of approximately 300 degrees C. and being free of paraffin.

4. The herein described process of pro ducing an. oil composition, which consists in admixing vegetable oil With mineral oil having a boiling point of approximately 300 degrees C. and being free of paraffin, and thickening such vegetable oil in the presence of the mineral oil.

In testimony whereof I hereunto aflix my signature in the presence of two Witnesses.

I HANS REBS.- [11. s.]

-Withesses:

ALBERT NUTFER, HELEN NUFER.