§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US3862323A Expired / Lapsed US ⏱️ 0.0 years remaining

Dioxide slime control composition and its use

Assignee: Veolia WTS USA Inc
•
Filing: 1971-09-20
•
Granted: 1975-01-21
•
Expires: 1991-09-20
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The present invention relates to certain processes and compositions useful for inhibiting and/or controlling the growth of slime in water and, in particular, water employed for industrial purposes. Water employed in the manufacture of pulp paper and water employed in cooling water systems, as well as other industrial waters, provide environments which are conducive to slime formation. The novel compositions of the present invention are mixtures which show unexpected synergistic activity against microorganisms, including bacteria, fungi and algae, which produce slime in aqueous systems. The slime, of course, is objectionable from an operational and/or an aesthetic point of view. Specifically, the invention is directed to and the use of composition comprising a combination of 5-chloro-4-phenyl-1,2dithiole-3-one and 3,3,4,4-tetrachlorotetrahydrothiophene-1,1dioxide, or the derivatives of each. The inventive compositions inhibit the growth of slime in water, or more specifically, possess biocidal activity against bacteria, fungi and/or algae. The derivatives contemplated for use in accordance with the present invention are those which possess the capacity to kill or inhibit the growth of slime-forming microorganisms such as bacteria, fungi and algae.

Inventors

  • 👤 Jr Robert H Brink
  • 👤 Bernard F Shema
  • 👤 Roger L Justice

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 12:16
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/50; A; A01; A01N; A01N43/00; A01N43/02; A01N43/24; A01N43/26

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 22 words
A method according to claim 1 wherein the combination contains approximately 50% by weight of each of said dithiole-3-one and said compound.
Claim 2
Dependent Claim 37 words
A method according to claim 1 wherein the combination is added to said system in any amount of from about 0.5 to about 1000 parts by weight of said composition per parts by weight of said system.
Claim 3
Dependent Claim 29 words
A method according to claim 3 wherein the composition is added to said system in an amount of 1 to 100 parts per million parts of said aqueous system.
Claim 4
Dependent Claim 19 words
A method according to claim 3 wherein the aqueous system is the aqueous system of a cooling water system.
Claim 5
Dependent Claim 20 words
A method according to claim 3 wherein the system is the aqueous system of a pulp and paper mill system.
Claim 6
Independent Claim 65 words
A method of preserving materials which are subject to attack by the microorganism Aerobacter aerogenes which comprises incorporating in said material containing an amount of said microorganism from about 0.5 to 5% by weight of a combination comprising 5-chloro-4-phenyl-1,2-dithiole-3-one and 3,3,4,4-tetrachlorotetrahydrothiophene-1,1-dioxide and mixtures thereof, wherein the weight ratio of the dithiole to the dioxide is from about 5 to 95% to about 95 to 5%.
Claim 7
Dependent Claim 53 words
A composition which is effective in controlling the growth of the microorganism Aerobacter aerogenes in an aqueous system in which said microorganism is found comprising 5-chloro-4-phenyl-1, 2-dithiole-3-one and 3,3,4,4-tetrachlorotetrahydrothiophene-1,1-dioxide and mixtures thereof, wherein the weight ratio of the dithiole to the dioxide is from about 5 to 95% to about 95 to 5%.
Claim 8
Dependent Claim 22 words
A composition according to claim 8 wherein the composition contains approximately 50% by weight of each of said dithiole-3-one and said compound.
Claim 9
Dependent Claim 70 words
A biocidal product which is effective in controlling the growth of the microorganism Aerobacter aerogenes in an aqueous system in which said microorganism is found comprising from about 5 to 10% by weight of 5-chloro-4-phenyl-1,2-dithiole-3-one and from about 5 to 10% by weight of 3,3,4,4-tetrachlorotetrahydrothiophene-1,1-dioxide and mixtures thereof, and the remainder composed of a material selected from the group consisting of surfactants, stabilizers, organic and inorganic solvents and mixtures thereof.

References Cited (Backward Citations)

US3031372A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-01-20 1978-07-22 1979-01-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-01-20 1982-07-22 1983-01-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-01-20 1986-07-22 1987-01-21 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag