US3350340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemically modified polymers of 1, 2-alkylenimines and a process for their production
Assignee: BASF SE
•
Filing: 1965-08-16
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Granted: 1967-10-31
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Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 Soenksen Uwe
- 👤 Bauer Ernst
- 👤 Sanne Walter
- 👤 Arnold Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:16
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS FOR THE PRODUCTION OF WATER-SOLUBLE POLYMERIZATION PRODUCTS FROM (A) A 1,2-ALKYLENIMINE WHICH IS FREE FROM SUBSTITUENTS ON THE NIRTOGEN ATOM AND (B) A COMPONENT SELECTED FROM THE GROUP CONSISTING OF A,B-UNSATURATED CARBOXYLIC ACIDS, ACID CHLORIDES, ESTERS AND ANHYDRIDES, WHEREIN 1 MOLE OF COMPONENT (A) IN A SOLVENT WHICH CONSISTS AT LEAST PARTLY OF WATER IS REACTED WITH 0.001 TO 0.5 MOLE OF COMPONENT (B) UNTIL THE VISCOSITY OF A 1% BY WEIGHT AQUEOUS SOLUTION OF THE PRODUCT AT 20*C. IS AT LEAST 1.2 CENTIPOISES.
Claim 2
Dependent Claim
86 words
A PROCESS FOR THE PRODUCTION OF WATER-SOLUBLE POLYMERIZATION PRODUCTS FROM (A) A 1,2-ALKYLENIMINE WHICH IS FREE FROM SUBSTITUENTS ON THE NIRTOGEN ATOM AND (B) A COMPONENT SELECTED FROM THE GROUP CONSISTING OF A,B-UNSATURATED CARBOXYLIC ACIDS, ACID CHLORIDES, ESTERS AND ANHYDRIDES, WHEREIN 1 MOLE OF COMPONENT (A) IN A SOLVENT WHICH CONSISTS AT LEAST PARTLY OF WATER IS REACTED WITH 0.001 TO 0.5 MOLE OF COMPONENT (B) UNTIL THE VISCOSITY OF A 1% BY WEIGHT AQUEOUS SOLUTION OF THE PRODUCT AT 20*C. IS AT LEAST 1.2 CENTIPOISES.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |