US3267046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for regulating the molecular weight of basic nitrogen polycondensates
Assignee: Montedison SpA
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Filing: 1962-12-17
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Granted: 1966-08-16
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Bonvicini Alberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:11
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; Y; Y10; Y10S; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
THE PROCESS FOR REGULATING THE MOLECULAR WEIGHT OF BASIC NITROGEN COMPOUND OBTAINED BY POLYCONDENSATION OF (1) EPICHLOROHYDRIN WITH (2) AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF PRIMARY ALIPHATIC AAMINES CONTAINING 3 TO 30 CARBON ATOMS ARE SECONDARY ALIPHATIC AMINES CONTAINING 4 TO 60 CARBONS ATOMS AND (3) A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, AROMATIC AND HETEROCYCLIC SECONDARY DIAMINES, CHARACTERIZED IN THAT AFTER THE TERMINATION OF THE POLYCONDENSATION A MOLECULAR WEIGHT REGULATOR SELECTED FROM THE GROUP CONSISTING OF THE HYDROXIDES, CARBONATES AND BICARBONATES OF AMMONIUM, ALKALI METALS AND ALKALINE EARTH METALS IN AN AMOUNT GREATER THAN THAT THEORETICALLY REQUIRED FOR COMPLETE REACTION WITH THE IONIC CHLORIDE FORMED IN THE POLYCONDENSATION IS ADDED TO THE REACTION MASS AND SAID REACTION MASS IS HEATED.
Claim 2
Dependent Claim
127 words
THE PROCESS FOR REGULATING THE MOLECULAR WEIGHT OF BASIC NITROGEN COMPOUND OBTAINED BY POLYCONDENSATION OF (1) EPICHLOROHYDRIN WITH (2) AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF PRIMARY ALIPHATIC AAMINES CONTAINING 3 TO 30 CARBON ATOMS ARE SECONDARY ALIPHATIC AMINES CONTAINING 4 TO 60 CARBONS ATOMS AND (3) A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, AROMATIC AND HETEROCYCLIC SECONDARY DIAMINES, CHARACTERIZED IN THAT AFTER THE TERMINATION OF THE POLYCONDENSATION A MOLECULAR WEIGHT REGULATOR SELECTED FROM THE GROUP CONSISTING OF THE HYDROXIDES, CARBONATES AND BICARBONATES OF AMMONIUM, ALKALI METALS AND ALKALINE EARTH METALS IN AN AMOUNT GREATER THAN THAT THEORETICALLY REQUIRED FOR COMPLETE REACTION WITH THE IONIC CHLORIDE FORMED IN THE POLYCONDENSATION IS ADDED TO THE REACTION MASS AND SAID REACTION MASS IS HEATED.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |