US3960965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline composition
Assignee: BP PLC
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Filing: 1973-10-23
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Granted: 1976-06-01
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Expires: 1993-10-23
Abstract
Abstract A carburetor detergent comprises a compound formula R -- O --R 1 -- N.R 2 .R 3 where R is a hydrocarbyl group containing at least 20 carbon atoms, R 1 is a hydrocarbyl or amino substituted hydrocarbyl grup and R 2 and R 3 are hydrogen or an alkyl group.
Inventors
- 👤 John Battersby
- 👤 Eric Simon Forbes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:03
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
63 words
A compound of the formula: ##EQU5## wherein R is a hydrocarbyl group containing from 20 to 500 carbon atoms and derived from the polymerization of isobutylene, R 1 is a polymethylene group containing 2 to 6 carbon atoms interrupted by an imino group, and R 2 and R 3 , which may be the same or different are hydrogen atoms or alkyl groups.
Claim 2
Dependent Claim
63 words
A compound of the formula: ##EQU5## wherein R is a hydrocarbyl group containing from 20 to 500 carbon atoms and derived from the polymerization of isobutylene, R 1 is a polymethylene group containing 2 to 6 carbon atoms interrupted by an imino group, and R 2 and R 3 , which may be the same or different are hydrogen atoms or alkyl groups.
Claim 3
Dependent Claim
79 words
A compound of the formula: ##EQU6## wherein R is a hydrocarbyl group containing from 20 to 500 carbon atoms and derived from the polymerization of isobutylene, R 1 is selected from the group consisting of --CH 2 CH 2 NH CH 2 CH 2 -- and --CH 2 CH 2 CH 2 NHCH 2 CH 2 CH 2 -- and R 2 and R 3 , which may be the same or different are hydrogen atoms or alkyl groups.
Claim 4
Dependent Claim
79 words
A compound of the formula: ##EQU6## wherein R is a hydrocarbyl group containing from 20 to 500 carbon atoms and derived from the polymerization of isobutylene, R 1 is selected from the group consisting of --CH 2 CH 2 NH CH 2 CH 2 -- and --CH 2 CH 2 CH 2 NHCH 2 CH 2 CH 2 -- and R 2 and R 3 , which may be the same or different are hydrogen atoms or alkyl groups.
Claim 5
Dependent Claim
110 words
A process for preparing a compound of formula: ##EQU7## which process comprises reacting an alkanolamine of formula ##EQU8## with a metal of Groups IA or IIA of the Periodic Table according to Mendeleef or an oxide, hydroxide or carbonate thereof to form an alkoxide and reacting the alkoxide with a hydrocarbyl halide of formula RX wherein R is a hydrocarbyl group containing from 20 to 500 carbon atoms and derived from the polymerization of isobutylene, R 1 is a hydrocarbyl or amino substituted hydrocarbyl and R 2 and R 3 , which may be the same or different are hydrogen atoms or alkyl groups, and X is chloride or bromide.
Claim 6
Dependent Claim
110 words
A process for preparing a compound of formula: ##EQU7## which process comprises reacting an alkanolamine of formula ##EQU8## with a metal of Groups IA or IIA of the Periodic Table according to Mendeleef or an oxide, hydroxide or carbonate thereof to form an alkoxide and reacting the alkoxide with a hydrocarbyl halide of formula RX wherein R is a hydrocarbyl group containing from 20 to 500 carbon atoms and derived from the polymerization of isobutylene, R 1 is a hydrocarbyl or amino substituted hydrocarbyl and R 2 and R 3 , which may be the same or different are hydrogen atoms or alkyl groups, and X is chloride or bromide.
Claim 7
Dependent Claim
25 words
A process according to claim 3 wherein the alkanolamine is reacted with a compound selected from the group consisting of sodium hydroxide and potassium hydroxide.
Claim 8
Dependent Claim
11 words
A process according to claim 3 wherein metallic magnesium is employed.
Claim 9
Dependent Claim
27 words
A process according to claim 3 wherein the reaction between the alkanolamine and the metal or metal compound is effected in the presence of an inert solvent.
Claim 10
Dependent Claim
20 words
A process according to claim 3 wherein the reaction takes place at a temperature in the range 100° to 190°C.
Claim 11
Dependent Claim
21 words
A process according to claim 3 wherein the reaction takes place at a temperature in the range of 140° to 160°C.
Claim 12
Dependent Claim
67 words
A process according to claim 3 wherein the alkanolamine is selected from the group consisting of compounds of the formulae: (CH 3 ) 2 NCH 2 CH 2 CH 2 NH CH 2 CH 2 OH, (CH 3 CH 2 ) 2 NCH 2 CH 2 OH, NH 2 CH 2 CH 2 OH and NH 2 CH 2 CH 2 NH CH 2 CH 2 OH.
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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |