Patent US2452920A successfully refreshed from Google Patents.
Patent US3950426A successfully refreshed from Google Patents.
US3950426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-Amino-2-propenyl and 1-amino-2-methylpropenyl alkane hydrocarbon
Assignee: Ethyl Corp
•
Filing: 1973-08-27
•
Granted: 1976-04-13
•
Expires: 1993-08-27
Abstract
Abstract Title compounds are novel oil-soluble, detergent-dispersant addition products for crankcase lubricating oils and are prepared by reacting a primary or secondary amine with 1-chloro-2-methylpropenyl substituted alkane hydrocarbons, especially 1-chloro-2-methylpropenyl terminated butene polymers, having a total of 20 to 180 carbon atoms.
Inventors
- 👤 George S. Culbertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:01
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08F8/32
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
77 words
An N-hydrocarbyl-substituted alkylene polyamine product of the formula Z--HN--(A--NH) n --Z 1 wherein n is an integer from 1 to 10, --A-- is a divalent hydrocarbon radical containing 1 to 10 methylene radicals, the substituent Z is ##EQU11## wherein R' is hydrogen or methyl and R consists of propyl or butyl units and the total carbon content of said Z-substituent is in the range from about 25 to about 180 and Z 1 is hydrogen or Z.
Claim 2
Dependent Claim
77 words
An N-hydrocarbyl-substituted alkylene polyamine product of the formula Z--HN--(A--NH) n --Z 1 wherein n is an integer from 1 to 10, --A-- is a divalent hydrocarbon radical containing 1 to 10 methylene radicals, the substituent Z is ##EQU11## wherein R' is hydrogen or methyl and R consists of propyl or butyl units and the total carbon content of said Z-substituent is in the range from about 25 to about 180 and Z 1 is hydrogen or Z.
Claim 3
Dependent Claim
17 words
The N-substituted tetraethylenepentamine of the formula Z--NH--(C 2 H 4 NH) 5 H wherein Z is ##EQU12##
Claim 4
Dependent Claim
17 words
The N-substituted tetraethylenepentamine of the formula Z--NH--(C 2 H 4 NH) 5 H wherein Z is ##EQU12##
Claim 5
Dependent Claim
35 words
The N substituted ethylene polyamine of claim 1 having the formula Z--HN--(C 2 H 4 --NH--) m --Z 1 where m, Z and Z 1 , having the same meaning as expressed in claim 1.
Claim 6
Dependent Claim
17 words
The N-substituted ethylene diamine of the formula Z--NH--C 2 H 4 --NH 2 wherein Z is ##EQU13##
Claim 7
Dependent Claim
17 words
The N-substituted ethylene diamine of the formula Z--NH--C 2 H 4 --NH 2 wherein Z is ##EQU13##
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) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |