US4512774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Residual fuel oil conditioners containing metal salts in aqueous solution
Assignee: ECC SPECIALTY CHEMICALS Inc
•
Filing: 1978-12-27
•
Granted: 1985-04-23
•
Expires: 1998-12-27
Abstract
Abstract Residual fuel oil conditioners comprising an aqueous solution of (a) from 2.0 to 20.0% by weight of at least one water soluble metal salt selected from the halides, sulfates, and nitrates of magnesium, manganese, zinc, copper, lead, iron, nickel, aluminum, calcium and barium; and (b) from 0.1 to 25.0% by weight of a surfactant, preferably a nonionic surfactant having an HLB of from 12 to 17.
Inventors
- 👤 John G. Myers
- 👤 Douglas P. Logan
- 👤 Jerry L. Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:20
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/04; C10L1/00; C10L1/10; C10L1/12; C10L1/1225; C10L1/1266; C10L1/1275
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
88 words
A residual fuel oil conditioner for improving combustion and preventing, inhibiting, or removing combustion deposits and corrosion of fuel burning equipment resulting from the burning of residual fuel oils, consisting essentially of an aqueous solution of a. from 2.0 to 20.0% by weight of at least one water soluble metal salt selected from the halides, sulfates, and nitrates of magnesium, manganese, zinc, copper, lead, iron, nickel, aluminum, calcium and barium; and b. from 0.1 to 25% by weight of a surfactant having an HLB of 12 to 17.
Claim 2
Dependent Claim
88 words
A residual fuel oil conditioner for improving combustion and preventing, inhibiting, or removing combustion deposits and corrosion of fuel burning equipment resulting from the burning of residual fuel oils, consisting essentially of an aqueous solution of a. from 2.0 to 20.0% by weight of at least one water soluble metal salt selected from the halides, sulfates, and nitrates of magnesium, manganese, zinc, copper, lead, iron, nickel, aluminum, calcium and barium; and b. from 0.1 to 25% by weight of a surfactant having an HLB of 12 to 17.
Claim 3
Dependent Claim
12 words
The conditioner of claim 1 wherein the metal salt is magnesium chloride.
Claim 4
Dependent Claim
12 words
The conditioner of claim 1 wherein the metal salt is manganese chloride.
Claim 5
Dependent Claim
10 words
The conditioner of claim 1 wherein the surfactant is anionic.
Claim 6
Dependent Claim
20 words
The conditioner of claim 1 wherein the surfactant is a nonionic surfactant having an HLB of from 12 to 17.
Claim 7
Dependent Claim
17 words
The conditioner of claim 5 wherein the HLB of the nonionic surfactant is from 15 to 16.
Claim 8
Dependent Claim
108 words
A residual fuel oil composition for use in fuel burning equipment comprising a major amount of residual fuel oil having distributed therethrough a conditioner for improving combustion and preventing, inhibiting, or removing combustion deposits and corrosion of fuel burning equipment resulting from the burning of said residual fuel oil, consisting essentially of an aqueous solution of a. from 2.0 to 20.0% by weight of at least one water soluble metal salt selected from the halides, sulfates, and nitrates of magnesium, manganese, zinc, copper, lead, iron, nickel, aluminum, calcium and barium; and b. from 0.1 to 25% by weight of a surfactant having an HLB of 12 to 17.
Claim 9
Dependent Claim
108 words
A residual fuel oil composition for use in fuel burning equipment comprising a major amount of residual fuel oil having distributed therethrough a conditioner for improving combustion and preventing, inhibiting, or removing combustion deposits and corrosion of fuel burning equipment resulting from the burning of said residual fuel oil, consisting essentially of an aqueous solution of a. from 2.0 to 20.0% by weight of at least one water soluble metal salt selected from the halides, sulfates, and nitrates of magnesium, manganese, zinc, copper, lead, iron, nickel, aluminum, calcium and barium; and b. from 0.1 to 25% by weight of a surfactant having an HLB of 12 to 17.
Claim 10
Independent Claim
104 words
A method of improving combustion and preventing, inhibiting, or removing combustion deposits and corrosion of fuel burning equipment resulting from the burning of said residual fuel oils therein, comprising adding to said fuel oils prior to their use in said fuel burning equipment, a conditioner consisting essentially of an aqueous solution of a. from 2.0 to 20.0% by weight of at least one water soluble metal salt selected from the halides, sulfates, and nitrates of magnesium, manganese, zinc, copper, lead, iron, nickel, aluminum, calcium and barium; and b. from 0.1 to 25% by weight of a surfactant having an HLB of 12 to 17.
Claim 11
Independent Claim
104 words
A method of improving combustion and preventing, inhibiting, or removing combustion deposits and corrosion of fuel burning equipment resulting from the burning of said residual fuel oils therein, comprising adding to said fuel oils prior to their use in said fuel burning equipment, a conditioner consisting essentially of an aqueous solution of a. from 2.0 to 20.0% by weight of at least one water soluble metal salt selected from the halides, sulfates, and nitrates of magnesium, manganese, zinc, copper, lead, iron, nickel, aluminum, calcium and barium; and b. from 0.1 to 25% by weight of a surfactant having an HLB of 12 to 17.
Claim 12
Dependent Claim
12 words
The method of claim 8 wherein the metal salt is magnesium chloride.
Claim 13
Dependent Claim
12 words
The method of claim 8 wherein the metal salt is manganese chloride.
Claim 14
Dependent Claim
10 words
The method of claim 8 wherein the surfactant is anionic.
Claim 15
Dependent Claim
20 words
The method of claim 8 wherein the surfactant is a nonionic surfactant having an HLB of from 12 to 17.
Claim 16
Dependent Claim
17 words
The method of claim 12 wherein the HLB of the nonionic surfactant is from 15 to 16.
References Cited (Backward Citations)
US3876391A
Cited
CA976755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |