US3996285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(N-dihydroxyalkyl) aminoalkylene-2-propenyl substituted hydrocarbons
Assignee: Ethyl Corp
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Filing: 1975-04-17
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Granted: 1976-12-07
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Expires: 1995-04-17
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
2026-11-05 21:13
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08F8/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
An N-hydrocarbyl-substituted hydroxyalkyl alkylene polyamine product of the formula Z--(NH--A--) m N(X--OH) 2 wherein m is an integer from 1 to 10, --A--, is a divalent alkylene hydrocarbon radical consisting of 1 to 10 methylene radicals, X is --C 2 H 4 -- or --C 3 H 6 --, and Z is ##STR11## wherein R' is hydrogen and R consists of propyl units and the total carbon content of Z is in the range of from 25 to 180.
Claim 2
Dependent Claim
79 words
An N-hydrocarbyl-substituted hydroxyalkyl alkylene polyamine product of the formula Z--(NH--A--) m N(X--OH) 2 wherein m is an integer from 1 to 10, --A--, is a divalent alkylene hydrocarbon radical consisting of 1 to 10 methylene radicals, X is --C 2 H 4 -- or --C 3 H 6 --, and Z is ##STR11## wherein R' is hydrogen and R consists of propyl units and the total carbon content of Z is in the range of from 25 to 180.
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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) | 1979-12-07 | 1980-06-07 | 1980-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-07 | 1984-06-07 | 1984-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-07 | 1988-06-07 | 1988-12-07 | $7700.00 | Window Closed / Lapsed |