US4140492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Borated derivatives of oil-soluble Mannich bases in combination with coadditive hydrocarbons are flow improvers for middle distillate fuel oils
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1977-09-26
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Granted: 1979-02-20
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Expires: 1997-09-26
Abstract
Abstract Borated derivatives of C8 to C40 hydrocarbyl substituted Mannich bases such as those derived from the condensation reaction of a C8-C40 alkyl substituted hydroxy aromatic compound (said alkyl preferably having a linear chain of 16 to 22 carbons), an aldehyde and a mono (C2-C3 alkanol) amine, preferably wherein the molar ratios of said aromatic to said aldehyde to said amine is about 1 to 0.9-1.4 to 0.9-1.4, respectively, are useful in combination with a coadditive hydrocarbon such as an amorphous hydrocarbon or a hydrogenated polybutadiene in improving the cold flow properties of distillate hydrocarbon oils.
Inventors
- 👤 Nicholas Feldman
- 👤 William H. Stover
- 👤 William DEWaal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:14
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/16; C10L1/1616; C10L1/1625; C10L1/1633; C10L1/1658; C10L1/30; C10L1/301; C10L1/303
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
129 words
A fuel composition comprising a major proportion of a distillate petroleum fraction having an atmospheric boiling range of from about 120° C. to about 400° C. and from about 0.01 to 1.0 wt.% of a flow and filterability improving combination comprising: (a) 1 to 5 parts by weight of borated oil-soluble Mannich base of the general formula ##STR3## wherein R is an alkyl group having from 8 to 40 carbon atoms and x is an integer ranging from 2 to 10; and (b) 1 to 100 parts by weight of a coadditive hydrocarbon of the class consisting of an oil-soluble amorphous hydrocarbon having less than about 5 wt.% of normal paraffin hydrocarbons, a hydrogenated polybutadiene having a number average molecular weight ranging from 400 to 10,000 and mixtures thereof.
Claim 2
Dependent Claim
129 words
A fuel composition comprising a major proportion of a distillate petroleum fraction having an atmospheric boiling range of from about 120° C. to about 400° C. and from about 0.01 to 1.0 wt.% of a flow and filterability improving combination comprising: (a) 1 to 5 parts by weight of borated oil-soluble Mannich base of the general formula ##STR3## wherein R is an alkyl group having from 8 to 40 carbon atoms and x is an integer ranging from 2 to 10; and (b) 1 to 100 parts by weight of a coadditive hydrocarbon of the class consisting of an oil-soluble amorphous hydrocarbon having less than about 5 wt.% of normal paraffin hydrocarbons, a hydrogenated polybutadiene having a number average molecular weight ranging from 400 to 10,000 and mixtures thereof.
Claim 3
Dependent Claim
71 words
A fuel composition according to claim 1 wherein said borated Mannich base is boron complexed with the reaction product of a C 8 -C 40 alkyl substituted hydroxy aromatic compound, an aldehyde and a mono(C 2 -C 3 alkoxy) amine wherein the molar ratio of said aromatic to aldehyde to amine is about 1 to 0.9-1.4 to 0.9-1.4, respectively, and in an amount of from about 0.1 to 4 wt.% boron.
Claim 4
Dependent Claim
22 words
A fuel composition according to claim 1 wherein the weight ratio of said (a) to said (b) ranges from 4:1 to 1:25.
Claim 5
Dependent Claim
20 words
The composition of claim 1 wherein said alkyl substituent contains a substantially linear chain of from 14 to 30 carbons.
Claim 6
Dependent Claim
26 words
The composition of claim 2 wherein said amine is ethanolamine and said hydrocarbon is hydrogenated polybutadiene having a (M n ) ranging from 600 to 3,000.
Claim 7
Dependent Claim
85 words
An additive concentrate comprising from about 1 to 60 wt.% of an additive combination consisting essentially of from 1 to 5 parts by weight of borated oil-soluble Mannich base of the general formula ##STR4## wherein R is an alkyl group having from 8 to 40 carbon atoms and x is an integer ranging from 2 to 10; and from 1 to 100 parts by weight of an oil-soluble amorphous hydrocarbon having less than about 5 wt.% of normal paraffin hydrocarbons dissolved in a hydrocarbon solvent.
Claim 8
Dependent Claim
85 words
An additive concentrate comprising from about 1 to 60 wt.% of an additive combination consisting essentially of from 1 to 5 parts by weight of borated oil-soluble Mannich base of the general formula ##STR4## wherein R is an alkyl group having from 8 to 40 carbon atoms and x is an integer ranging from 2 to 10; and from 1 to 100 parts by weight of an oil-soluble amorphous hydrocarbon having less than about 5 wt.% of normal paraffin hydrocarbons dissolved in a hydrocarbon solvent.
Claim 9
Dependent Claim
43 words
A borated oil-soluble Mannich base of the general formula ##STR5## wherein R is an alkyl group having from 8 to 40 carbon atoms and x is an integer ranging from 2 to 10; and containing from about 0.1 to 4 weight percent boron.
Claim 10
Dependent Claim
43 words
A borated oil-soluble Mannich base of the general formula ##STR5## wherein R is an alkyl group having from 8 to 40 carbon atoms and x is an integer ranging from 2 to 10; and containing from about 0.1 to 4 weight percent boron.
References Cited (Backward Citations)
US3649229A
Cited
US3948619A
Cited
US3877889A
Cited
US4021207A
Cited
US3955940A
Cited
US4016092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |