US4179459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the synthesis of mixed polyimino derivatives of aluminium and alkaline earth metals
Assignee: Anic SpA
•
Filing: 1977-09-07
•
Granted: 1979-12-18
•
Expires: 1997-09-07
Abstract
Abstract A single stage process is provided for the direct synthesis of mixed polyimino derivatives of aluminium and alkaline earth metals consisting of reacting aluminium, an amine, the alkaline earth metal or hydride or amide derivative thereof, in the presence of hydrogen, the reaction being promoted by an activator in either hydrocarbon or ether solvents.
Inventors
- 👤 Giovanni Dozzi
- 👤 Salvatore Cucinella
- 👤 Alessandro Mazzei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:20
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/42; C08F4/44; C08F4/52; C07; C07F; C07F5/00; C07F5/06; C07F5/069; C08G; C08G79/00; C08G79/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
43 words
A process for the synthesis of mixed polyimino derivatives of aluminum and alkaline earth metals, said process consisting of reacting aluminum, a primary or secondary amine, and an alkaline earth metal or a hydride or amide derivative thereof, in the presence of hydrogen.
Claim 2
Dependent Claim
43 words
A process for the synthesis of mixed polyimino derivatives of aluminum and alkaline earth metals, said process consisting of reacting aluminum, a primary or secondary amine, and an alkaline earth metal or a hydride or amide derivative thereof, in the presence of hydrogen.
Claim 3
Dependent Claim
22 words
A process as claimed in claim 1 wherein the reaction is carried out in the presence of a hydrocarbon or ether solvent.
Claim 4
Dependent Claim
34 words
A process as claimed in claim 1 wherein the reaction is carried out in the presence of an activator chosen from the alkaline metals, their hydrides, aluminum alkyls or alane complexes with Lewis bases.
Claim 5
Dependent Claim
29 words
A process as claimed in claim 3 wherein the activator is added in a quantity equal to or less than 5 molar % of the primary or secondary amine.
Claim 6
Dependent Claim
69 words
A process for the preparation of a compound of the formula: (HAlNR).sub.a (H.sub.2 AlNHR).sub.b (MNR).sub.c (HMNR).sub.d which comprises combining xM; yAl and zRNH 2 wherein M is an alkaline earth metal; (a+b)=y; (c+d)=x; (x+y)=z; (c+d) is not equal to zero, (a+b+c+d) may vary between 2 and 20, and (a+b)=(c+d), or (a+b) is greater than (c+d); and R is a hydrocarbon radical, in the presence of a solvent and hydrogen.
Claim 7
Dependent Claim
69 words
A process for the preparation of a compound of the formula: (HAlNR).sub.a (H.sub.2 AlNHR).sub.b (MNR).sub.c (HMNR).sub.d which comprises combining xM; yAl and zRNH 2 wherein M is an alkaline earth metal; (a+b)=y; (c+d)=x; (x+y)=z; (c+d) is not equal to zero, (a+b+c+d) may vary between 2 and 20, and (a+b)=(c+d), or (a+b) is greater than (c+d); and R is a hydrocarbon radical, in the presence of a solvent and hydrogen.
Claim 8
Dependent Claim
15 words
A process as defined in claim 5 where M is magnesium and R is t-butyl.
Claim 9
Dependent Claim
16 words
A process as defined in claim 6 wherein sodium aluminum hydride is added as an activator.
Claim 10
Dependent Claim
83 words
A process for the preparation of a compound of the formula: (HAlNR).sub.a (H.sub.2 AlNHR).sub.b (MNR).sub.c (HMNR).sub.d which comprises combining either xMH 2 ; yAl and zRNH 2 or xM(NHR) 2 ; yAl and (z 2 x)RH 2 ; wherein M is an alkaline earth metal; (a+b)=y; (c+d)=x; (x+y)=z; (c+d) is not equal to zero, (a+b+c+d) may vary between 2 and 20, and (a+b)=(c+d), or (a+b) is greater than (c+d); and R is a hydrocarbon radical, in the presence of a solvent and hydrogen.
Claim 11
Dependent Claim
83 words
A process for the preparation of a compound of the formula: (HAlNR).sub.a (H.sub.2 AlNHR).sub.b (MNR).sub.c (HMNR).sub.d which comprises combining either xMH 2 ; yAl and zRNH 2 or xM(NHR) 2 ; yAl and (z 2 x)RH 2 ; wherein M is an alkaline earth metal; (a+b)=y; (c+d)=x; (x+y)=z; (c+d) is not equal to zero, (a+b+c+d) may vary between 2 and 20, and (a+b)=(c+d), or (a+b) is greater than (c+d); and R is a hydrocarbon radical, in the presence of a solvent and hydrogen.
Claim 12
Dependent Claim
21 words
A process as defined in claim 8 wherein a compound of the formula xM(NHR) 2 is employed wherein M is magnesium.
References Cited (Backward Citations)
US3255169A
Cited
US3651064A
Cited
US3781318A
Cited
US4022809A
Cited
US3983150A
Cited
US4032553A
Cited
US4064153A
Cited
US4128566A
Cited
US4128567A
Cited
US4122108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |