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US4152117A
Expired / Lapsed
US
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Process for the quantitative analysis of organoaluminum compounds in their solutions
Assignee: Hoechst AG
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Filing: 1978-02-28
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Granted: 1979-05-01
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Expires: 1998-02-28
Abstract
Abstract The concentration of organoaluminum compounds in their solutions can be determined quantitatively, even in a range of less than 10 mmols/dm 3 , when adding to the solution to be analyzed instantaneously an excess of reactant and when measuring the produced reaction heat.
Inventors
- 👤 Ludwig Bohm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:33
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/20; G01N25/48; G01N25/4873
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
122 words
Process for the quantitative analysis of organoaluminum compounds of aluminum trialkyls, aluminum alkyl chlorides, aluminum alkyl hydrides or of reaction products of aluminum trialkyls or aluminum dialkyl hydrides with diolefin in solutions by reacting the same with a tertiary alcohol, a tertiary amine or an ether, which comprises adding in a concentration, in said solution, from 0.05 to 100 m mols/dm 3 in one step to the solution of said organoaluminum compound an excess of the tertiary alcohol, the tertiary amine or an ether as a reactant with said organoaluminum compound in a ratio of reactant to organoaluminum compound of 20:1 to 100:1 and measuring the change of temperature occurring in a reaction zone being substantially heat exchange proof with the environment.
Claim 2
Dependent Claim
122 words
Process for the quantitative analysis of organoaluminum compounds of aluminum trialkyls, aluminum alkyl chlorides, aluminum alkyl hydrides or of reaction products of aluminum trialkyls or aluminum dialkyl hydrides with diolefin in solutions by reacting the same with a tertiary alcohol, a tertiary amine or an ether, which comprises adding in a concentration, in said solution, from 0.05 to 100 m mols/dm 3 in one step to the solution of said organoaluminum compound an excess of the tertiary alcohol, the tertiary amine or an ether as a reactant with said organoaluminum compound in a ratio of reactant to organoaluminum compound of 20:1 to 100:1 and measuring the change of temperature occurring in a reaction zone being substantially heat exchange proof with the environment.
Claim 3
Dependent Claim
19 words
Process as claimed in claim 1, which comprises carrying out the reaction in a continuously working flow calorimeter zone.
References Cited (Backward Citations)
US3160477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |