Patent US3939200A successfully refreshed from Google Patents.
US3939200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aliphatic acyl-containing amine hydrochlorides
Assignee: Rohm and Haas Co
•
Filing: 1970-09-04
•
Granted: 1976-02-17
•
Expires: 1990-09-04
Abstract
Abstract Novel acyl-containing amine hydrochlorides are produced by first converting the amino group or groups of an amino acid to an acid salt by reaction with hydrochloric acid and the resulting product is reacted with an alkanolamine or diol in an inert liquid medium while passing a stream of hydrogen chloride gas therethrough. The amine hydrochlorides produced in this manner may be converted to the corresponding isocyanates by reaction with phosgene or other carbonyl dihalide.
Inventors
- 👤 William D. Emmons
- 👤 Jerome F. Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:57
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/771; C07; C07C; C07C229/00; C07C229/02; C07C229/04; C07C229/06; C07C229/08; C07C229/24; C07C229/52; C07C229/54; C07C229/60
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
59 words
An amine having the formula ##EQU3## wherein m and n are either 1 or 2, R 6 is an alkylene or cycloalkylene radical having 2 to 8 carbon atoms and up to one hetero oxygen or sulfur atom in the alkylene chain, and R 7 is a divalent organic alkylene or cycloalkylene radical having 3 to 18 carbon atoms.
Claim 2
Dependent Claim
59 words
An amine having the formula ##EQU3## wherein m and n are either 1 or 2, R 6 is an alkylene or cycloalkylene radical having 2 to 8 carbon atoms and up to one hetero oxygen or sulfur atom in the alkylene chain, and R 7 is a divalent organic alkylene or cycloalkylene radical having 3 to 18 carbon atoms.
Claim 3
Dependent Claim
13 words
An amine according to claim 1 wherein m and n are both 1.
Claim 4
Dependent Claim
14 words
An amine according to claim 1 wherein m is 2 and n is 1.
Claim 5
Dependent Claim
13 words
An amine according to claim 2 wherein R 7 is a n-pentylene radical.
Claim 6
Dependent Claim
13 words
An amine according to claim 4 wherein R 6 is an ethylene radical.
Claim 7
Dependent Claim
66 words
An amine salt having the formula ##EQU4## wherein m and n are either 1 or 2, R 6 is an alkylene or cycloalkylene radical having 2 to 8 carbon atoms and up to 1 hetero oxygen or sulfur atom in the alkylene chain, R 7 is a divalent organic alkylene or cycloalkylene radical having 3 to 18 carbon atoms, and Hx is a strong mineral acid.
Claim 8
Dependent Claim
66 words
An amine salt having the formula ##EQU4## wherein m and n are either 1 or 2, R 6 is an alkylene or cycloalkylene radical having 2 to 8 carbon atoms and up to 1 hetero oxygen or sulfur atom in the alkylene chain, R 7 is a divalent organic alkylene or cycloalkylene radical having 3 to 18 carbon atoms, and Hx is a strong mineral acid.
Claim 9
Dependent Claim
21 words
An amine salt according to claim 6 wherein m and n are both one, and R 7 is a n-pentylene radical.
Claim 10
Dependent Claim
19 words
An amine salt according to claim 7 wherein R 6 is an ethylene radical and HX is hydrochloric acid.
References Cited (Backward Citations)
US2871258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |