US2519747A - Detergent composition - Google Patents

Description

Y j at the same time.

Patented Aug. 22,, 1950 omrro STATE s rArzu-rjomc I I DETERGENT-COMPOSITION x fndnen servule Du Bois, 'Jers'eioity, N. 1., a gig-nor to Onyx Oil & Chemical Company.

corporation of Delaware Application July 10. 1945, Serial No.605,469

No Drawing.

1 Claim.

This invention relatesto a detergent sanitizer composition which will both cleanse and sanitize .The new composition, is particularly advantageous for use as an antiseptic detergent or detergent sanitizer inthe dairy industry and .otherpurposes, e. g., forhand-washing of milkin'g machines and ior use where antiseptic action as well as detergent action is desired.

The new detergent sanitizer composition is in the form of a. free flowing powder and contains a quaternary ammonium compound, a non-ionic detergent, and compatible alkali salts in suitable proportions. The alkali salts particularly sodium carbonate and tetrasodium pyrophosphate are used in a finely powdered form. Varying amounts of inert salts or fillers, such as sodium sulfate, sodium chloride, etc. may also be included.

In making the new composition the quaternary ammonium compound and the non-ionic deter gent are .advantageously mixed together and heated to form a thin liquid which is then added ,slowly and gradually to the powdered alkali salts with'g'thorough mixture so as to insure thorough 45 parts sodium carbonate (NaaCOs) 45 parts TSPP 6.3 parts nona-ethylene glycol mono ester of soya bean fatty acids 3 parts Quartol Anhydrous (oieyl dimethyl ethyl ammonium bromide) In general, the amounts of the composition to be used will be 'suflicient to give a dilute solution of e. g., 1% in water but stronger or more dilute solutions may be used.

Tests were made of the composition of the above formula, the tests being carried out by inoculating 5 c. c. of the 1% solution of the detergent sanitizer with 5 c. c. of a 24-hour culture of E. coli and subculturing, after 1, 2, 3, 5 and minutes, into 10 c. c. of broth and then re-subculturing 3 loopfuls into 10 c. c. of broth and incubating at 37 degrees centigrade for 48 hours. The results obtained indicated that such a composition was eiiective even in one minute in killing E. coli. Tests werealso carried out, under more stringent and" practical conditions, using the same technique but adding 1, 2 and 3% milk to the 1% solution of the composition. .The results obtained atroorn temperature, usingfa 1% solution against E. colz', were as follows:.

} Period of Exposure 1 Min- 2 Min- 3 Mine 5 Min- 10 Minute utes uts 'utes utes Detergent Sanitizer".-. 0 '0 '0 '0 0 Detergent Sanitizer i 1 milk 0 0 0 0 Detergent Sanitizer o 0 0 0 0 Detergent Sanitizer +3% milk 0 0 In the table indicates growth and 0 indicates no growth. All of these results were obtained in triplicate. Further tests were carried out at 40 and C. with the following results:

Period of Exposure lMin- 2Min- 3Min- 5Min- 10Minute utes utes utes utes Detergent Sanitizer. 0 0 0 0 0 Detergent Sanitizer +l% milk 0 0 0 0 Detergent Sanitizer +13% milk 0 0 0 0 Detergent Sanitizer"... 0 0 0 0 Detergent Sanitizer +l% milk 0 0 0 0 Detergent Sanitizer +3% miik 0 0 o 0 Tests were carried out at 40 C. using solution of the composition with the following results:

In these tests it will be seen that the quaternary ammonium compound imparts adesirable germicidal activity to the composition and that this activity is not interfered with by the nonionic detergent; while, from the standpoint of detergency, the non-ionic detergent imparts valuable detergent properties.

While I;do not wish to limit myself by any theoretical explanation of the. action of the composition, I have been led to believe that the nonionic detergent neutralizes or overcomes any negative detergent action of the quaternary ammonium compound without interfering with the desirable antibacterial action of the quarternary ammonium compound with the result that the composition is a valuable detergent sanitizer, useful in solutions, e. g., of about 1%, where antibacterial action as well as detergent'action is desired.

Solutions of the detergent sanitizer composition are alkaline but with a pH of less than 10, e. g., 9.7 The new composition, as above pointed out, is valuable for use in the dairy industry, e. g., when milking machines are washed by hand.

It is also a valuable detergent sanitizer composiadmixture to give a resulting free-flowing com position. It is a valuable detergent composition, available for use as detergent, as well as detergent sanitizer.

I claim: 4 A detergent sanitizer composition in the form of a free-flowingpowder consisting essentially of the following ingredients in the following parts by weight: Sodium carbonate, 45 parts; Tetra sodium pyrophosphate, 45 parts; Nona-ethyleneglycol mono ester of soya bean fatty acids, 6.3 parts; and Oleyl dimethyl ethyl ammonium bromide, 3 parts.

ADRIEN SERVULE DU BOIS.

amen-noes CITED The following references are of record in the tile of this patent:

UNITED STATES PATENTS Number Name Date 2,060,850 Calcott et al Nov. 1'7, 1936 2,302,697 Katzman Nov. 24, 1942 2,314,840 Caryl Mar. 23, 1943 2,356,587 Hentrich et a1. Aug. 22, 1944 2,365,215 Rhodes Dec. 19, 1944 OTHER REFERENCES Chemical Formulary, Bennett, vol. 6 (1943), pages 492 and 493. 7

Triton NE, booklet of Rohm and Haas Co., Philadelphia (1943). pages 3, 4 and 9