US2840479A - Oleaginous composition and method of using same - Google Patents

Description

United States Patent O OLEAGINQUS COMPOSETION AND METHOD OF USING SAME Claude F. Rowell and John S. De Puy, Port Huron, and Ray Bailey, Alpena, Mich.

No Drawing. Application February 6, 1956 Serial No. 563,439

4 Claims. (Cl. 106-38.24)

It is an object of this invention to provide a composition of matter which may be applied to the interior of concrete handling equipment such as molds, shutes, mixers, etc. and which will have the effect of minimizing the adhesion of concrete to the surfaces thus treated.

It is a further object of this invention to provide a method for minimizing adhesion of concrete to the interior surfaces of equipment as aforesaid.

For convenience and in order to avoid possible alternativeness, the word mold shall include shutes, mixers and any other equipment having surfaces in contact with concrete at any stage between initial mixing of the concrete and its final setting but in which ultimate separation of such surfaces and the concrete is desirable. This invention will be discussed primarily with reference to the treatment of metallic surfaces. Actually, it is applicable to any surface but its use on highly absorptive surfaces usually would be uneconomical in proportion to the benefits obtained.

The composiiton which has been found most etfective is as follows:

Percent Bright polysperm oil N 6. Texas pale oil 93.82 Sulphur .05 Chlorine .13

Total 100.

This is blended to the specifications as follows:

A. P. I. Gravity 22.5 Flash C. O. C 345 Fire C. O. C 385 S. U. S. Viscosity 100 F 213 S. U. S. Viscosity 210 F 44.5 Sap. No 11.38 Neutralization No 0.08 Sulphur percent 005 Chlorine do 0.13 Iodine No. of isolated fatty acids 53.3 Acid No. of isolated fatty acids 188.2 Unsaponifiable content of isolated F. A 3.1

Acid No. of isolated F. A. corrected for unsap 194.8

The sulphur content simply is normal to most Texas grades. The chlorine has been added to reduce the otherwise quite objectionable odor of the sperm oil content. While this much chlorine does not render the composition completely odorless, the odor is so greatly reduced as to render the composition unobjectionable in this respect. This amount of chlorine, however, is insufficient to create any corrosion problems for the purposes of this invention.

In the case of concrete mixers and shutes, it is customary to wash up at the end of each days operations. In the case of molds and forms, however, it is customary to clean up each time the product is withdrawn from the mold or form before refilling for the production of a new product. It has been found that the above composition, if brushed or sprayed on the interior of the mold after each clean up, not only greatly facilitates separation of the mold and the product but also facilitates the clean up, thereby saving time and labor.

While, as nearly as has been ascertained, the above composition is wholly absorbed by the concrete with which it comes in contact, it has no darkening or other discoloring effect. For purposes of visualization, this composition is comparable to a motor oil running between S. A. E. 40 and S. A. E. 50.

No theory is advanced as to why this composition, used as set forth herein, produces the highlybeneficial effects that it does. It is probable that the sperm oil, which is a liquid wax virtually free of glycerides and containing esters of various saturated alcohols, it is the major contributing factor with the mineral oil acting chiefly as a solvent and vehicle for the sperm oil. This, however, is not to be taken as an unequivocal, factual statement. The specifications to which the constituents are blended, are not of themselves critical or even overwhelmingly important so far as the function of the composition is concerned. Sperm oil, like any other product derived from a living creature, is of variable composition. This is true to a lesser degree of mineral oils. If the constituents of this composition, when blended, test out to the specifications above set forth, an optimum product for the purpose of this invention will be obtained.

While one very specific example has been disclosed herein, it will be clear to one skilled in the art, that both the proportions of the constituents, to a lesser degree the nature of the constituents and to a reasonable extent, the specifications to which the constituents are blended, may be varied. For example, the substitution of a Pennsylvania oil for a Texas oil would reduce and possibly eliminate the sulphur content. This invention, therefore, is not to be limited to the precise example herein set forth but only as in the subjoined claims.

We claim:

1. A composition of matter for treating the concrete contacting surfaces of concrete molds consisting essentially of: a mixture having a minor proportion of polysperm oil and a major portion of mineral oil, in which the polysperm oil is in the proportion of substantially 6% of the total mixture and the mineral oil is in the proportion of substantially 93% of the total mixture.

2. A composition as set forth in claim 1 including a small proportion of chlorine as a deodorizing agent.

3. A method of treating the concrete contacting surfaces of concrete forms comprising coating said surfaces with a mixture as set forth in claim 1, said coating being applied after clean up.

4. A method according to claim 3 in which the mixture is as set forth in claim 2.

References Cited in the file of this patent UNITED STATES PATENTS 1,319,129 Wells Oct. 21, 1919 1,869,779 Roberts Aug. 2, 1932 2,044,210 Gordon June 16, 1936 2,151,353 Montgomery Mar. 21, 1939 2,251,824 Edwards Aug. 5, 1941 2,400,001 Grupelli May 7, 1946 2,745,714 Woodward May 15, 1956 OTHER REFERENCES Lewkowitsch: Chemical Technology and Analysis of Oils, Fats and Waxes, vol II, p. 870 (pub. 1914, Mac- Millan).

Klemgard: Lubricating Greases, p. 59, pub. 1937, Reinhold.

Rusby et al.: Properties and Uses of Drugs, p. 529, pub. 1930, Blakiston.

Claims (1)

1. A COMPOSITION OF MATTER FOR TREATING THE CONCRETE CONTACTING SURFACES OF CONCRETE MOLDS CONSISTING ESSENTIALLY OF: A MIXTURE HAVING A MINOR PROPORTION OF POLYSPERM OIL AND A MAJOR PORTION OF MINERAL OIL, IN WHICH THE POLYSPERM OIL IS IN THE PROPORTION OF SUBSTANTIALLY 6% OF THE TOTAL MIXTURE AND THE MINERAL OIL IS IN THE PROPORTION OF SUBSTANTIALLY 93% OF THE TOTAL MIXTURE.