US978142A - Disinfecting compound. - Google Patents

Description

, To all whom it may concern:

v UNITED STATES PATENT OFFICE.

WILHELM nnnyrus, on NEW YORK, N. Y.

978,142. No Di-awing.

Be it known that I, WILHELM DREYFUS, a citizen of the United States, residing in the boron h of Manhattan, city, county, and State of 1% new and useful Improvement in Disinfecting Compounds, of which the following is a specification.

The present invention relates to a disinfecting and deodorizing compound containing a large percentage of formaldehyde in rm available for use in disinfectin machines, and in a process for making sai compound.

It is well known that water will readily absorb formaldehyde gas, forming an aqueous solution which is useful for some purposes. Such a solution, however, is not suitable for commercial use in the machinescommonly used for distributing disinfectants. 1

The present invention relates to means whereby the powerful disinfecting ualities of formaldehyde ma be made avai able in the disinfecting machines commonly in use, without dan er of dama ing them in the least. For tliis purpose incorporate formaldehyde in a l1qu1d oily medium, preferably by the process hereinafter described.

. In the preferred modification of my improved process I make a solution of caustic alkali in alcohol, and in this solution I dissolve the formaldehyde or a olymerized form thereof, preferably para orm. This solution is incorporated successfully with a mineral oil in clear and substantial y homogeneous solution by admixture of a natural or synthetic essentlal oil.

One way in which theabove process may be carried out is the following, although it is to be understood that I do not limit myself to the use of the proportions named or to the particular substances or steps described, save in so far as specifically claimed hereinafter. Two separate mixtures are prepared. One of these.for convenience called mixture A-is prepared by dissolving three pounds of caustic alkali preferably caustic potash in seven allons of grain or wood alcohol, practical y free of acetones. To this I add twenty-four pounds of paraform which is dissolved by the solution. The other mixture--for convenience referred to as mixture B -is prepared by mixing approximately equal parts of nat- DISINFECTING OOMPOUNDL Specification of Letters Patent. Application filed December 1, 1908. Serial No. 465,541.

ew York, have invented a certain ural or synthetic oil of Wintergreen and refined mineral oil or petroleum and heatin the same from 100 to 150 Fahr. The 01 used for lighting urposes will answer in this connection, alt ough I prefer the heavier distillates so long as they are liqu d enough for use in the disinfecting machlne above mentioned.

A barrel of 'my greferred disinfecting compound may bema e by adding from one to two gallons of mixture A to ten allons of the hot mixture B, and, while still hot, mixing the resulting compound with enough additional mineral oil to make a barrel of about 54 allons.

I have ound that the compound produced in accordance with my invention is a substantially uniform product which gives ofit both formaldehyde and the perfume when properl distributed in the space to be d sinfectezll The com ound above described is found efficient an useful when placed in an apropriate container in the apartment to e disinfected or deodorized, whence it is disseminated by volatilization, this process being assisted in some cases by the slow dischines above mentioned are generally .em-'

ployed; and in these wicks are enerally employed for carrying out the disinfecting liquid. It is one object of m invention to supply a liquid which will e carried off successfully in this manner by means of wicks without danger of clogging. For th1s purpose it is out o the question to saponify the oil, and the use of alkali in my process produces no saponification, as the reaction of the paraform and alkali in solution A prevents this. By the term free. oil in my claims, I mean oil which is not saponified.

What I claim is-- y 1. A disinfecting liquid comprising free mineral oil incorporated with an essential oil and with a solution of caustic alkali and formaldehyde, substantially as described.

2. A disinfecting liquid comprising free mineral oil incorporated with an essential oil and with a solution of caustic alkali and formaldehyde in alcohol, substantially as described.

3. A disinfecting liquid comprising free mineral oil incorporated with an essential Patented Dec. 13, 1910. i I

oil and with an alkaline solution of polymerized formaldehyde, substantially as described.

4. The process of preparing a disinfecting fluid which consists in mixing a refined mineral oil With an essential oil and a solution of caustic alkali and formaldehyde of such proportions that the sap'onifying effect of the alkali is neutralized, substantially as described.

5. The process of preparing a disinfecting fluid which consists in mixing a mineral oil with an essential oil and an alcoholic solution of caustic alkali and formaldehyde of such proportions that the saponifying efi'ect of the alkali is neutralized, substantially as described.

G. The process of preparing a disinfecting fluid which consists in dissolving formaldehyde in a solution of caustic alkali in alcohol, preparing a mixture of mineral oil and an essential oil, heating the latter, and mixing the aforesaid solution of formaldehyde with said heated mixture, substantially as described.

WILHELM DREYFUS.

Witnesses:

CHAS. E. JEFFERrEs, MAY A. BUTLER.