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US4334085A
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Transamination process for Mannich products
Assignee: Ethyl Corp
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Filing: 1978-09-14
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Granted: 1982-06-08
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Expires: 1998-09-14
Abstract
Abstract A transamination process for producing Mannich products comprising reacting a polyamine with a substantially formaldehyde-free mononitrogen Mannich adduct.
Inventors
- 👤 Robert J. Basalay
- 👤 John H. Udelhofen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:33
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/125; C07D295/13; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225; C10L1/234; C10L1/238; C10L1/2383; C10M; C10M159/00; C10M159/12; C10M159/16; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/062; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
32 words
A transamination process for Mannich products comprising the reaction of a polyamine comprising at least two nitrogen atoms separated by at least an ethylene group with a substantially formaldehyde-free mononitrogen Mannich adduct.
Claim 2
Dependent Claim
32 words
A transamination process for Mannich products comprising the reaction of a polyamine comprising at least two nitrogen atoms separated by at least an ethylene group with a substantially formaldehyde-free mononitrogen Mannich adduct.
Claim 3
Dependent Claim
53 words
The transamination process of claim 1 wherein the substantially formaldehye-free Mannich adduct is the product of the process comprising reacting a formaldehyde-yielding compound, a mononitrogen compound selected from the group consisting of ammonia, primary amines and secondary amines, and a hydrocarbon compound having at least one acidic hydrogen, and removing substantially all volatiles.
Claim 4
Dependent Claim
26 words
The process of claim 2 wherein the formaldehyde-yielding reagent and the mononitrogen compound are reacted separately producing a condensation product prior to producing the Mannich adduct.
Claim 5
Dependent Claim
25 words
The process of claim 3 wherein the polyamine and the condensation product are simultaneously reacted with the hydrocarbon compound having at least one acidic hydrogen.
Claim 6
Dependent Claim
13 words
The process of claim 3 wherein the condensation reaction product is hexamethylene tetramine.
Claim 7
Dependent Claim
40 words
The process of claim 2 wherein the hydrocarbon compound having at least one acidic hydrogen is selected from the group consisting of an alkyl substituted phenol having a molecular weight from about 300 to 6000 and an oxidized olefinic polymer.
Claim 8
Dependent Claim
24 words
The process of claim 2 wherein the mononitrogen compound is selected from the group consisting of dimethyl amine, diethyl amine, methylethyl amine, and ammonia.
Claim 9
Dependent Claim
49 words
The process of claim 1 wherein the polyamine is selected from the group consisting of bis(aminopropyl)-piperazine, bis(aminopropyl)-ethylene diamine, bis(aminopropyl)-methylamine and an amine of the formula NH.sub.2 (A--NH).sub.n H wherein A is an alkylene group having 2 to 6 carbon atoms and n is a number from 1 to 6.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |