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US5197996A
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Methods and compositions for color stabilized distillate fuel oils
Assignee: Veolia WTS USA Inc
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Filing: 1992-06-25
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Granted: 1993-03-30
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Expires: 2012-06-25
Abstract
Abstract This invention relates to methods and compositions for color stabilized distillate fuel oils which comprise adding an effective stabilizing amount of a combination of (a) a boron hydride-amine compound and (b) an organic silicon compound.
Inventors
- 👤 Dwight K. Reid
- 👤 Spencer S. Awbrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:05
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L10/00; C10L10/04; C10L1/28; C10L1/30; C10L1/301; C10L1/303
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
47 words
A method for color stabilizing distillate fuel oil comprising adding to said fuel oil an effective color stabilizing amount of a combination of (a) a boron hydride-amine compound and (b) an organic silicon compound wherein the weight ration of (a):(b) is from about 10:1 to about 1:10.
Claim 2
Independent Claim
47 words
A method for color stabilizing distillate fuel oil comprising adding to said fuel oil an effective color stabilizing amount of a combination of (a) a boron hydride-amine compound and (b) an organic silicon compound wherein the weight ration of (a):(b) is from about 10:1 to about 1:10.
Claim 3
Dependent Claim
36 words
The method as claimed in claim 1 wherein said boron hydride-amine compound has the formula BH.sub.x NR.sub.x wherein x is either 3 or 4, R is an alkyl group or NR x is morpholine or N-ethyl-morpholine.
Claim 4
Dependent Claim
15 words
The method as claimed in claim 2 wherein said boron hydride-amine compound is boranedimethylamine complex.
Claim 5
Dependent Claim
15 words
The method as claimed in claim 2 wherein said boron hydride-amine compound is boranemorpholine complex.
Claim 6
Dependent Claim
15 words
The method as claimed in claim 2 wherein said boron hydride-amine compound is tetrabutylammonium borohydride.
Claim 7
Dependent Claim
15 words
The method as claimed in claim 2 wherein said boron hydride-amine compound is tetramethylammonium borohydride.
Claim 8
Dependent Claim
72 words
The method as claimed in claim 1 wherein said organic silicon compound has the formula [(R'.sub.x)SiO].sub.y (R").sub.z wherein x is 1 to 3, y is 1 or 2 and z is 0 or 1, and R' is an alkyl group from 1 to 6 carbons, R" is an alkyl group from 1 to 6 carbons, or an alkylene group from 1 to 6 carbons or CH 3 C(═NSi(CH 3 ) 3 ).
Claim 9
Dependent Claim
14 words
The method as claimed in claim 1 wherein said organic silicon compound is dimethylsiloxane.
Claim 10
Dependent Claim
14 words
The method as claimed in claim 1 wherein said organic silicon compound is 1,2-bis(trimethylsiloxy)ethane.
Claim 11
Dependent Claim
14 words
The method as claimed in claim 1 wherein said organic silicon compound is N,O-bis(trimethylsilyl)acetamide.
Claim 12
Dependent Claim
31 words
The method as claimed in claim 1 wherein said boron hydride-amine compound and said organic silicon compound are added to said fuel oil prior to color deterioration of said fuel oil.
Claim 13
Dependent Claim
17 words
The method as claimed in claim 1 wherein said distillate fuel oil is a blended diesel fuel.
Claim 14
Dependent Claim
34 words
The method as claimed in claim 1 wherein said mixture is added to said fuel oil in an amount from about 1 part to about 500 parts per million parts of said fuel oil.
Claim 15
Dependent Claim
17 words
The method as claimed in claim 1 wherein the weight ratio of (a):(b) is from about 3:1.
Claim 16
Dependent Claim
44 words
A color stabilized distillate fuel oil composition comprising distillate fuel oil and an effective stabilizing amount of a mixture of (a) a boron hydride-amine compound and (b) an organic silicon compound wherein the weight ratio of (a):(b) is from about 10:1 to about 1:10.
Claim 17
Dependent Claim
44 words
A color stabilized distillate fuel oil composition comprising distillate fuel oil and an effective stabilizing amount of a mixture of (a) a boron hydride-amine compound and (b) an organic silicon compound wherein the weight ratio of (a):(b) is from about 10:1 to about 1:10.
Claim 18
Dependent Claim
36 words
The composition as claimed in claim 15 wherein said boron hydride-amine compound has the formula BH.sub.x NR.sub.x wherein x is either 3 or 4, R is an alkyl group or NR x is morpholine or N-ethyl-morpholine.
Claim 19
Dependent Claim
14 words
The composition as claimed in claim 15 wherein said borane-amine compound is boranedimethylamine complex.
Claim 20
Dependent Claim
14 words
The composition as claimed in claim 15 wherein said borane-amine compound is boranemorpholine complex.
Claim 21
Dependent Claim
14 words
The composition as claimed in claim 15 wherein said borohydride-amine compound is tetramethylammonium borohydride.
Claim 22
Dependent Claim
14 words
The composition as claimed in claim 15 wherein said borohydride-amine compound is tetrabutylammonium borohydride.
Claim 23
Dependent Claim
72 words
The composition as claimed in claim 15 wherein said organic silicon compound has the formula [(R'.sub.x)SiO].sub.y (R").sub.z wherein x is 1 to 3, y is 1 or 2 and z is 0 or 1, and R' is an alkyl group from 1 to 6 carbons, R" is an alkyl group from 1 to 6 carbons, or an alkylene group from 1 to 6 carbons or CH 3 C(═NSi(CH 3 ) 3 ).
Claim 24
Dependent Claim
14 words
The composition as claimed in claim 15 wherein said organic silicon compound is dimethylsiloxane.
Claim 25
Dependent Claim
14 words
The composition as claimed in claim 15 wherein said organic silicon compound is 1,2-bis(trimethylsiloxy)ethane.
Claim 26
Dependent Claim
14 words
The composition as claimed in claim 15 wherein said organic silicon compound is N,O-bis(trimethylsilyl)acetamide.
Claim 27
Dependent Claim
31 words
The composition as claimed in claim 15 wherein the total amount of (a) and (b) is from about 1 part to about 500 parts per million parts of said fuel oil.
Claim 28
Dependent Claim
17 words
The composition as claimed in claim 15 wherein the weight ratio of (a):(b) is from about 3:1.
Claim 29
Dependent Claim
17 words
The composition as claimed in claim 15 wherein said distillate fuel oil is a blended diesel fuel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-29 | 1996-09-28 | 1997-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-29 | 2000-09-28 | 2001-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-29 | 2004-09-28 | 2005-03-30 | $7700.00 | Window Closed / Lapsed |