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US3865724A Expired / Lapsed US ⏱️ 0.0 years remaining

Slime control compositions and their use

Assignee: Veolia WTS USA Inc
•
Filing: 1973-06-15
•
Granted: 1975-02-11
•
Expires: 1993-06-15
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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 pulp paper, in the manufacture of 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 slime in aqueous systems or bodies which are objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising a combination of 2, 2 -Dibromo - 3 nitrilopropionamide and Bis-1-4 bromoacetoxy-2 butene.

Inventors

  • 👤 Bernard F Shema
  • 👤 Jr Robert H Brink
  • 👤 Paul Swered

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 18:01
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/50; A; A01; A01N; A01N37/00; A01N37/34

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 37 words
A composition for the control of the growth of Aerobacter aerogenes in aqueous systems comprising 2-2-dibromo-3-nitrilopropionamide and Bis-1,4-bromoacetoxy-2-butene, wherein the weight ratio of the amide to the butene ranges from about 5: 95 to about 95:5 respectively.
Claim 2
Dependent Claim 37 words
A composition for the control of the growth of Aerobacter aerogenes in aqueous systems comprising 2-2-dibromo-3-nitrilopropionamide and Bis-1,4-bromoacetoxy-2-butene, wherein the weight ratio of the amide to the butene ranges from about 5: 95 to about 95:5 respectively.
Claim 3
Dependent Claim 11 words
The composition of claim 1 where said ratio is about 50:50.
Claim 4
Independent Claim 52 words
A METHOD FOR CONTROLLING THE GROWTH OF THE MICROORGANISM AEROBACTER AEROGENES IN AN AQUEOUS SYSTEM WHICH COMPRISES ADDING TO SAID SYSTEM AN EFFECTIVE AMOUNT FOR THE PURPOSE OF A COMPOSITION OF 2-2-DIBROMO-3NITRILOPROPIONAMIDE AND BIS-1,4-BROMOACETOXY-2-BUTENE, WHEREIN THE WEIGHT RATIO OF THE AMIDE TO THE BUTENE RANGES FROM ABOUT 5:95 TO ABOUT 95:5 RESPECTIVELY.
Claim 5
Independent Claim 52 words
A METHOD FOR CONTROLLING THE GROWTH OF THE MICROORGANISM AEROBACTER AEROGENES IN AN AQUEOUS SYSTEM WHICH COMPRISES ADDING TO SAID SYSTEM AN EFFECTIVE AMOUNT FOR THE PURPOSE OF A COMPOSITION OF 2-2-DIBROMO-3NITRILOPROPIONAMIDE AND BIS-1,4-BROMOACETOXY-2-BUTENE, WHEREIN THE WEIGHT RATIO OF THE AMIDE TO THE BUTENE RANGES FROM ABOUT 5:95 TO ABOUT 95:5 RESPECTIVELY.
Claim 6
Dependent Claim 11 words
The method of claim 3 where said ratio is about 50:50.
Claim 7
Dependent Claim 38 words
The method of claim 3 wherein said composition is added to said system in an amount of from 0.1 to about 1,000 parts per by 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)

US2840598A Cited
US3493658A Cited
US3488734A Cited
US3647610A Cited
US3689660A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-02-10 1978-08-12 1979-02-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-02-10 1982-08-12 1983-02-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-02-10 1986-08-12 1987-02-11 $7700.00 Window Closed / Lapsed

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