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US4239692A
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Oligomeric iminic derivatives of aluminum hydride and method for their preparation
Assignee: Anic SpA
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Filing: 1979-03-15
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Granted: 1980-12-16
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Expires: 1999-03-15
Abstract
Abstract There are disclosed oligomeric aluminum hydride iminic derivatives to be employed as catalysts in polymerization processes and, which are prepared by causing alkali-metal or alkaline-earth-metal alanates to react with a primary amine which contains a group of the type --X--R" m , wherein X is a nitrogen atom or an oxygen atom and m is equal to the valence of X minus one. The compounds have a trimeric or a tetrameric "open cage" spatial configuration.
Inventors
- 👤 Giovanni Dozzi
- 👤 Salvatore Cucinella
- 👤 Tito Salvatori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:56
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/069
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
192 words
Oligomeric derivatives of aluminum having a tridimensional "open cage" structure of the formula: [HAlN--R'--XR".sub.m).sub.i (H.sub.2 AlNH--R'--XR".sub.m).sub.j ] wherein: (a) R' is (i) a linear, branched or aryl-substituted bivalent hydrocarbon aliphatic radical having from 1 to 20 carbon atoms, (ii) a bivalent cycloaliphatic radical or alkyl- or arylsubstituted bivalent cycloaliphatic radical or (iii) an aromatic or alkylsubstituted aromatic bivalent radical having from 1 to 20 carbon atoms, (b) X is a nitrogen or an oxygen atom, (c) R" is (i) a linear, branched or aryl-substituted aliphatic hydrocarbon radical having from 1 to 20 carbon atoms, (ii) a cycloaliphatic hydrocarbon radical or alkyl or arylsubstituted hydrocarbon radical having from 1 to 20 carbon atoms, or (iii) an aromatic or alkylsubstituted aromatic radical having from 1 to 20 carbon atoms, (d) m is a function of the nature of X and is equal to v-1, v being the valence of X and wherein m is greater than 1 the radicals R" can be equal to, or different from, each other, (e) +j equals z, z being an integer between 4 and 20 and in addition i can be equal to j or different from j.
Claim 2
Dependent Claim
192 words
Oligomeric derivatives of aluminum having a tridimensional "open cage" structure of the formula: [HAlN--R'--XR".sub.m).sub.i (H.sub.2 AlNH--R'--XR".sub.m).sub.j ] wherein: (a) R' is (i) a linear, branched or aryl-substituted bivalent hydrocarbon aliphatic radical having from 1 to 20 carbon atoms, (ii) a bivalent cycloaliphatic radical or alkyl- or arylsubstituted bivalent cycloaliphatic radical or (iii) an aromatic or alkylsubstituted aromatic bivalent radical having from 1 to 20 carbon atoms, (b) X is a nitrogen or an oxygen atom, (c) R" is (i) a linear, branched or aryl-substituted aliphatic hydrocarbon radical having from 1 to 20 carbon atoms, (ii) a cycloaliphatic hydrocarbon radical or alkyl or arylsubstituted hydrocarbon radical having from 1 to 20 carbon atoms, or (iii) an aromatic or alkylsubstituted aromatic radical having from 1 to 20 carbon atoms, (d) m is a function of the nature of X and is equal to v-1, v being the valence of X and wherein m is greater than 1 the radicals R" can be equal to, or different from, each other, (e) +j equals z, z being an integer between 4 and 20 and in addition i can be equal to j or different from j.
Claim 3
Dependent Claim
107 words
A process for the preparation of oligomeric derivatives of aluminum according to claim 1 comprising the step of reacting in an inert atmosphere, at a temperature in a range of from about 90° C. to about 150° C. at a pressure in a range of from about 100 kg/cm 2 to about 200 kg/cm 2 and in a solvent selected from the group consisting of hydrocarbon solvents and ethereal solvents, alanates of alkali metals or alkaline earth metals with amines and wherein the starting amine is a primary amine containing a group of the type --X--R" wherein the symbols have the same meaning as in claim 1.
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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) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |