US3951833A
Expired / Lapsed
US
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Method for preserving functional fluids and liquid hydrocarbon fuels with selected 1,10-phenanthrolines
Assignee: Olin Corp
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Filing: 1975-02-27
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Granted: 1976-04-20
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Expires: 1995-02-27
Abstract
Abstract A method for preserving certain organic fluids is provided wherein an inhibitory amount of a selected 1,10-phenanthroline is incorporated in such fluids as a biocide.
Inventors
- 👤 Robert H. Juda
- 👤 Gene A. Hyde
- 👤 Alan E. Ardis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:54
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/02; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10N; C10N2040/00; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
126 words
A method for preventing microbial contamination of organic fluids selected from the group consisting of functional fluids and liquid hydrocarbon fuels which support microbial growth when mixed with water comprising incorporating in said fluid an effective inhibitory amount of a biocide having the formula ##SPC3## wherein R and R' are lower alkyl appended to a ring carbon atom, x and y are each integers in the range of 0-2, the sum of x and y being an integer in the range of 0-4 and wherein R" is selected from the group consisting of lower alkyl, phenyl, halo, nitro and oxy, z being an integer in the range of 0-2 and wherein the sum of x, y, and z is an integer in the range of 0-4.
Claim 2
Independent Claim
126 words
A method for preventing microbial contamination of organic fluids selected from the group consisting of functional fluids and liquid hydrocarbon fuels which support microbial growth when mixed with water comprising incorporating in said fluid an effective inhibitory amount of a biocide having the formula ##SPC3## wherein R and R' are lower alkyl appended to a ring carbon atom, x and y are each integers in the range of 0-2, the sum of x and y being an integer in the range of 0-4 and wherein R" is selected from the group consisting of lower alkyl, phenyl, halo, nitro and oxy, z being an integer in the range of 0-2 and wherein the sum of x, y, and z is an integer in the range of 0-4.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein said organic fluid is a metal working fluid.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein said organic fluid is a cutting fluid.
Claim 5
Dependent Claim
15 words
The method of claim 1 wherein z is an integer having a value of 1.
Claim 6
Dependent Claim
10 words
The method of claim 1 wherein said biocide is 5-methyl-1,10-phenanthroline.
Claim 7
Dependent Claim
18 words
The method of claim 1 wherein said organic fluid is a cutting fluid and said biocide is 5-methyl-1,10-phenanthroline.
Claim 8
Dependent Claim
91 words
A metal working fluid having incorporated therein an effective inhibitory amount of a biocide having the formula ##SPC4## wherein R and R' are methyl, x and y are each integers in the range of 0-2, the sum of x and y being an integer in the range of 0-4 and wherein R" is selected from the group consisting of methyl, phenyl, halo, nitro and oxy, z being an integer in the range of 0-2 and wherein the sum of x, y, and z is an integer in the range of 0-4.
Claim 9
Dependent Claim
91 words
A metal working fluid having incorporated therein an effective inhibitory amount of a biocide having the formula ##SPC4## wherein R and R' are methyl, x and y are each integers in the range of 0-2, the sum of x and y being an integer in the range of 0-4 and wherein R" is selected from the group consisting of methyl, phenyl, halo, nitro and oxy, z being an integer in the range of 0-2 and wherein the sum of x, y, and z is an integer in the range of 0-4.
Claim 10
Dependent Claim
16 words
The metal working fluid of claim 7 wherein z is an integer whose value is 1.
Claim 11
Dependent Claim
12 words
The metal working fluid of claim 7 wherein said biocide is 5-methyl-1,10-phenanthroline.
Claim 12
Dependent Claim
19 words
The metal working fluid of claim 7 wherein said fluid is a cutting fluid and said biocide is 5-methyl-1,10-phenanthroline.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-20 | 1979-10-20 | 1980-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-20 | 1983-10-20 | 1984-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-20 | 1987-10-20 | 1988-04-20 | $7700.00 | Window Closed / Lapsed |