US2908666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering monomer fractions in the condensation of amino acids and other monomeric products
Assignee: SNIA Viscosa SpA
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Filing: 1956-12-18
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Granted: 1959-10-13
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Expires: 1976-12-18
Abstract
No abstract record available.
Inventors
- 👤 Notarbartolo Luigi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:27
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A PROCESS OF FORMING A HIGH POLYMER FROM THE MONOMER 11-AMINOUNDECANOIC ACID CONTAINING IMPURITIES COMPRISING MIXING SAID MONOMER WITH A MAJOR AMOUNT OF WATER, INJECTING THE RESULTANT MIXTURE WHICH IS BELOW THE MELTING POINT OF THE MONOMER AND IN WHICH THE WATER IS IN LIQUID STATE IN THE FROM OF A JET INTO AN EVAPORATOR CONTAINING INTERNALLY HEATED BODIES MAINTAINED AT A TEMPERATURE ABOVE THE MELTING POINT OF THE MONOMER AND ABOVE THE BOILING POINT OF WATER AND ABRUPTLY CHANGING THE DIRECTION TO THE JET AND APPLYING CENTRIFUGAL FORCES THEREBY ATOMIZING AND THROWING IT AGAINST THE HEATED BODIES CAUSING FORMATION OF LOW POLYMERS AND RAPID EVOLUTION OF STEAM, PASSING EVOLVED STEAM, ENTRAINED MONOMER AND EVOLVED IMPURITIES FROM THE EVAPORATOR INTO A PACKED ZONE MAINTAINED ABOVE THE MELTING POINT OF THE MONOMER AND TRAPPING THE MONOMER IN SAID ZONE, PERMITTING PURIFIED MONOMER TO FLOW BACK TO THE EVAPORATOR WHILE VENTING STREAM AND OTHER MATERIAL NOT TRAPPED IN THE TOWER AND FLOWING THE LOW POLYMER AND PURIFIED MONOMER FROM THE EVAPORATOR INTO A TUBE WHEREIN THEY ARE POLYMERIZED TO A HIGH POLYMER.
Claim 2
Dependent Claim
180 words
A PROCESS OF FORMING A HIGH POLYMER FROM THE MONOMER 11-AMINOUNDECANOIC ACID CONTAINING IMPURITIES COMPRISING MIXING SAID MONOMER WITH A MAJOR AMOUNT OF WATER, INJECTING THE RESULTANT MIXTURE WHICH IS BELOW THE MELTING POINT OF THE MONOMER AND IN WHICH THE WATER IS IN LIQUID STATE IN THE FROM OF A JET INTO AN EVAPORATOR CONTAINING INTERNALLY HEATED BODIES MAINTAINED AT A TEMPERATURE ABOVE THE MELTING POINT OF THE MONOMER AND ABOVE THE BOILING POINT OF WATER AND ABRUPTLY CHANGING THE DIRECTION TO THE JET AND APPLYING CENTRIFUGAL FORCES THEREBY ATOMIZING AND THROWING IT AGAINST THE HEATED BODIES CAUSING FORMATION OF LOW POLYMERS AND RAPID EVOLUTION OF STEAM, PASSING EVOLVED STEAM, ENTRAINED MONOMER AND EVOLVED IMPURITIES FROM THE EVAPORATOR INTO A PACKED ZONE MAINTAINED ABOVE THE MELTING POINT OF THE MONOMER AND TRAPPING THE MONOMER IN SAID ZONE, PERMITTING PURIFIED MONOMER TO FLOW BACK TO THE EVAPORATOR WHILE VENTING STREAM AND OTHER MATERIAL NOT TRAPPED IN THE TOWER AND FLOWING THE LOW POLYMER AND PURIFIED MONOMER FROM THE EVAPORATOR INTO A TUBE WHEREIN THEY ARE POLYMERIZED TO A HIGH POLYMER.
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) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |