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US3994772A Expired / Lapsed US ⏱️ 0.0 years remaining

Composition and method of inhibiting growth of slime in water

Assignee: Veolia WTS USA Inc
•
Filing: 1975-10-23
•
Granted: 1976-11-30
•
Expires: 1995-10-23
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Abstract

Abstract The present invention relates to certain processes and compositions useful for inhibiting the growth of slime in water and, in particular, water used for industrial purposes; for example, in the manufacture of paper and pulp paper, in cooling water systems and in effluent water treatment. The novel processes and compositions of the present invention are processes or mixtures which show unexpected synergistic activity against microorganisms, including bacteria, fungi and algae, which produce, in aqueous systems or bodies, slime which is objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising alpha -Bromo-p-methylacetophenone and 1,3-dichloroacetone oxime acetate.

Inventors

  • 👤 Paul Swered
  • 👤 Daniel B. Ellis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 18:09
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/50; A; A01; A01N; A01N37/00; A01N37/16

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 36 words
A composition for the control of the microorganism Klebsiella pneumoniae in aqueous systems comprising α-Bromo-p-methylacetophenone and 1,3-dichloroacetone oxime acetate, wherein the weight ratio of the acetophenone to the acetate ranges from about 95:5 to about 5:95.
Claim 2
Dependent Claim 36 words
A composition for the control of the microorganism Klebsiella pneumoniae in aqueous systems comprising α-Bromo-p-methylacetophenone and 1,3-dichloroacetone oxime acetate, wherein the weight ratio of the acetophenone to the acetate ranges from about 95:5 to about 5:95.
Claim 3
Dependent Claim 10 words
The composition of claim 1 wherein said ratio is 50:50.
Claim 4
Independent Claim 53 words
A method for controlling the growth of the microorganism Klebsiella pneumoniae in an aqueous system which comprises adding to said system a growth inhibiting amount of a composition comprised of α-Bromo-p-methylacetophenone and 1,3-dichloroacetone oxime acetate, wherein the weight ratio of the acetophenone to the acetate ranges from about 95:5 to about 5:95 respectively.
Claim 5
Independent Claim 53 words
A method for controlling the growth of the microorganism Klebsiella pneumoniae in an aqueous system which comprises adding to said system a growth inhibiting amount of a composition comprised of α-Bromo-p-methylacetophenone and 1,3-dichloroacetone oxime acetate, wherein the weight ratio of the acetophenone to the acetate ranges from about 95:5 to about 5:95 respectively.
Claim 6
Dependent Claim 11 words
The method of claim 3 wherein said ratio is about 50:50.
Claim 7
Dependent Claim 37 words
The method of claim 3 wherein said composition is added to said system in an amount of from 0.5 to about 1000 parts per weight of said composition per million parts by weight of said aqueous system.
Claim 8
Dependent Claim 23 words
The method of claim 5 where said composition amount is from about 1 to about 100 parts per million of said aqueous system.
Claim 9
Dependent Claim 16 words
The method of claim 5 wherein the aqueous system is that of a cooling water system.
Claim 10
Dependent Claim 18 words
The method of claim 5 wherein the aqueous system is that of a pulp and paper mill system.

References Cited (Backward Citations)

US3824316A Cited
US3903296A Cited
US3903279A Cited
US3904764A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-11-30 1980-05-31 1980-11-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-11-30 1984-05-31 1984-11-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-11-30 1988-05-31 1988-11-30 $7700.00 Window Closed / Lapsed

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