US1621483A - Soluble oil - Google Patents

Description

Patented Mar. 15,1927.

UNiTD s'rarss 1,621,483 PATENT o Fics.

HOWARD DmHIG. OF CHICAGO, ILLINOIS, ASSIGNOR TO THE TEXAS COMPANY, 01

YORK, N. Y., A CORPORATION OF TEXAS.

SOLUBLE OIL.

, No Drawing.

a suitable and inexpensive mineral oil, while employing alcohol or ammonia, or the like, as a mutual or common solvent for the purpose of securing the desired degree of misl5 cibility and stability. These mutual solvents temporarily efiected their intended purpose but, on long standing, the oily mixtures tended to separate and revert to a non-miscible condition. As this reversion is particularly marked when the soluble oil is left .partially open to the atmosphere, it is believed that this action is due largely to'the low boiling points of the mutual solvents emplo edin the prior art, thus permitting ready evaporation thereof. Consequently, the character ofrthe soluble oil is not fixed and the emulsifying agent and oil tend to separate as the mutual solvent is removed by evaporation. so Having in mind this difliculty of the prior art, it is an object of the present invention to provide an improved, substantially stable and permanent soluble oil by the utilization of a mutual solvent, preferably, a phenolic 5 body, which has a relatively high boiling point, and which, therefore, will not evaporate readily under ordinary conditions. For this purpose I combine the usual emulsifying a ant and the 'oil with a mutual solo vent, pre erably of a phenolic type, as cresol or phenol, either one of which serves the purpose of securing the desired solubility or miscibility of the other ingredients, while maintaining these properties without sub- 5 stantial change under ordinary conditions. The amount of the mutual solventnecessary may vary considerably, but is generally less than the corresponding amount of alcohol orammonia required in the prior art.

a It should be understood at the outset that 5 properties of phenolic bodies believed The Application filed February 8, 1924. Serial No. 691,508.

to be especially beneficial to the production and continued maintenance of an improved and superior commercial product.

The present invention may best be understood from the following description of a soluble oil constituting a preferred embodiment thereof.

The soluble oil base is first prepared, and subsequently is mixed with an inexpensive mineral oil in the proportions of about one part of the base to from two to six parts of oil.-

The soluble oil base may be prepared from any well-known emulsifying agent, such as those made. from sodium, potassium or ammonium soaps of inexpensive fatty or rosin acids, '(for exampleoleic, rosin or stearic) to which a small amount of a mutual or common solvent, preferably of the phenolic t pe, such as cresol (cresyhc acid) or phenol (iaarbolic acid) is added. Phenol and cresol are particularly adapted for use as mutual solvents, both by reason of the peculiar properties of phenolic bodies, as well as their relatively high boiling points. 'Other mutual solvents having boiling points at least as high as 150 C. may also be employed, butit is preferred to use mutual solvents of the phenolic type, since I now consider that such products produce results of superior quallty.

As an illustrative exam 1c of a soluble oil base that has been foun satisfactory, the following ingredients are mixed in the proportions indicated below:

As already intimated, the emulsi ing agent, constituting a part of the above ase,

may be composed of other well-known ingredients prepared in'accordance with the practice familiar in the art, so that the elements and proportions above indicated are not in any way restrictive but merely exempla Havmg mixed the soluble oil base in the its general manner described above, it is subsequently added to a suitable mexpensivt mineral oil, which ma constitute most any oil having the proper ubricating roperties. proportions of the soluble 0' base d the oil will vary conslderaoiy in accordance with the particular in redients employed and the results desire but in eneral, it will he found that they shoul be mixed in about the proportions of one part of the soluble oil base to form two to six parts of. the oil. After adding the oil to the base, it is desirable to efiect a thorough mixture by agitating in a suitable manner until the desired solubility or miscibility of the various ingredients is efiected. Through the agency of the mutual solvent, which operates in common on the aiiueous emulsifying agent and the mineral oi, there is produced an absolutely miscible soluble oil of permanently stable character.

With due regard for the range of propertions of the soluble oil base and the oil hereinhefore mentioned, I have found that satisfactory soluble oils may be prepared having in general the following contents:

Per cent.

Emulsifying agent 10 to 26 Mineral oil 88 to 71 Commonsolvent 1 110 at Although a particular mode of procedure has been descri ed, with respect to the steps of mixing the various ingredients, it he 'understood thatthis particular order or sequence is not essential'and satisfactory results may be secured by first mixing the mutual solvent with the mineral oil; and then adding the emulsifying agent thereto, or even by mixing the emulsifying agent, the mutual solvent and the mineral oil together in a single batch. The mode of preparation, so far as the relative proportions of parts and sequence of steps is concerned, is not at all critical, but the essence of the invention resides in utilizing, in conjunction with an emulsifying agent, and a mineral oil, a mutual solvent, preferably of the phenolic type, having a relatively high boiling point, thereby preventing its own subsequent evaporation under ordinary conditions and thus insuring permanence and stability in the character of the soluble oil produced.

Only such limitations should be imposed as are indicated in the appendedclaims.

What I claim is:

1. A stable soluble oil com rising mineral oil, sodium-resinate and a p end as a mutual solvent.

2. A stable soluble oil comprising mineral oil, sodium resinate and cresol as a mutual solvent.

3. A stable soluble oil comprising mineral oil, sodium resinate, oleic acid and a phenol."

4%. A stable soluble oil, comprising mineral oil, a soap, oleic acid and a phenol.

In witness'whereof I have hereunto set my hand this 31st day of January, 1924.

HOWARD DIMMIG.