US3260751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing polyamines
Assignee: Bayer Corp
•
Filing: 1963-06-13
•
Granted: 1966-07-12
•
Expires: 1983-06-13
Abstract
No abstract record available.
Inventors
- 👤 Eugene L Powers
- 👤 Irvin B Van Horn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:21
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/68; C07C209/78; C07C211/00; C07C211/43; C07C211/44; C07C211/49; C07C211/50; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/06; C08G12/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A METHOD OF PREPARING POLYAMINES WHICH COMPRISES MIXING CONTINUOUSLY UNDERTURBULENT FLOW CONDITIONS AT A REYNOLDS NUMBER OF FROM ABOUT 4500 TO ABOUT 100,000, AN AMINE WHICH IS ANILINE, CHLOROANILINE, ORTHO-, META-, AND PARATOLUIDINE, ORTHO-, META- AND PARA-PHENETI DINE, ORTHO-, META- AND PARA-ANISDINEM, ORTHO-, META-AND PARA-XYLIDINE, ORTHO-, META- AND PARA-XENYL AMINES, NITROANILINE, 2,4-TOLYLENEDIAMINE OR 2,6-TOLYLENE WITH AN ALDEHYDE OR KETONE WHICH IS FORMALDEHYDE, ACETALDEHYDE, PROPIONALDEHYDE, BUTYRALDEHYDE, BENZALDEHYDE,CYCLOHEXANEALDEHYDE, ACETONE, METHYL ETHYL KETONE, METHYL-NPROPYL KETONE, DIETHYL KETONE, HEXANONE-2, HEXANONE-3, DI-N-PROPYL KETONEOR CYCLOHEXANONE, THE REACTANTS BEING CONTINUOUSLY PRESENT IN THE REACTION ZONE IN PROPORTIONS OF FROM ABOUT 1.4 TO ABOUT 4 MOLS OF AMINE PER MOLE OF ALDEHYDE OR KETONE, SAID REACTION BEING CARRIED OUT IN THE PRESENCE OF AN ACID CATALYST FOR THE CONDENSATION OF SAID AMINE WITH SAIDALDEHYDE OR KETONE.
Claim 2
Independent Claim
128 words
A METHOD OF PREPARING POLYAMINES WHICH COMPRISES MIXING CONTINUOUSLY UNDERTURBULENT FLOW CONDITIONS AT A REYNOLDS NUMBER OF FROM ABOUT 4500 TO ABOUT 100,000, AN AMINE WHICH IS ANILINE, CHLOROANILINE, ORTHO-, META-, AND PARATOLUIDINE, ORTHO-, META- AND PARA-PHENETI DINE, ORTHO-, META- AND PARA-ANISDINEM, ORTHO-, META-AND PARA-XYLIDINE, ORTHO-, META- AND PARA-XENYL AMINES, NITROANILINE, 2,4-TOLYLENEDIAMINE OR 2,6-TOLYLENE WITH AN ALDEHYDE OR KETONE WHICH IS FORMALDEHYDE, ACETALDEHYDE, PROPIONALDEHYDE, BUTYRALDEHYDE, BENZALDEHYDE,CYCLOHEXANEALDEHYDE, ACETONE, METHYL ETHYL KETONE, METHYL-NPROPYL KETONE, DIETHYL KETONE, HEXANONE-2, HEXANONE-3, DI-N-PROPYL KETONEOR CYCLOHEXANONE, THE REACTANTS BEING CONTINUOUSLY PRESENT IN THE REACTION ZONE IN PROPORTIONS OF FROM ABOUT 1.4 TO ABOUT 4 MOLS OF AMINE PER MOLE OF ALDEHYDE OR KETONE, SAID REACTION BEING CARRIED OUT IN THE PRESENCE OF AN ACID CATALYST FOR THE CONDENSATION OF SAID AMINE WITH SAIDALDEHYDE OR KETONE.
References Cited (Backward Citations)
US2822373A
Cited
US3163666A
Cited
US1803331A
Cited
US1915108A
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US1954484A
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US2683730A
Cited
US2818433A
Cited
US2974168A
Cited
US3097191A
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US2938054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |