US2833745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of the salts of polymerized alpha.beta-unsaturated aliphatic acids
Assignee: BASF SE
•
Filing: 1954-06-15
•
Granted: 1958-05-06
•
Expires: 1974-06-15
Abstract
No abstract record available.
Inventors
- 👤 Fikentscher Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:36
CPC Classifications
C; C08; C08F; C08F120/00; C08F120/02; C08F120/04; C08F120/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS OF MANUFACTURING A SOLID SALT OF A POLYACRYLIC ACID WHICH COMPRISES MIXING A MONOMERIC ACRYLIC ACID WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIUM AND ALKALI METAL CARBONATES, BICARBONATES AND CARBAMINATES, THE MIXTURE OF THE MONOMERIC ACRYLIC ACID AND OF SAID COMPOUND CONTAINING AT MOST 50% OF WATER WITH REFERENCE TO THE MONOMERIC ACRYLIC ACID AND THE MONOMERIC ACRYLIC ACID BEING NEUTRALIZED TO AT LEAST 50% BY SAID COMPOUND, AND POLYMERIZING THE MIXTURE IN THE PRESENCE OF A POLYMERIZATION ACCELERATOR WITH THE EVOLUTION IN THE REACTION MIXTURE OF AT LEAST ONE GAS FROM THE GROUP CONSISTING OF CARBON DIOXIDE AND AMMONIA IN ORDER TO PRODUCE A SOLID SALT OF A POLYACRYLIC ACID WHICH CAN BE COMMINUTED TO A POWDER.
Claim 2
Dependent Claim
123 words
A PROCESS OF MANUFACTURING A SOLID SALT OF A POLYACRYLIC ACID WHICH COMPRISES MIXING A MONOMERIC ACRYLIC ACID WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIUM AND ALKALI METAL CARBONATES, BICARBONATES AND CARBAMINATES, THE MIXTURE OF THE MONOMERIC ACRYLIC ACID AND OF SAID COMPOUND CONTAINING AT MOST 50% OF WATER WITH REFERENCE TO THE MONOMERIC ACRYLIC ACID AND THE MONOMERIC ACRYLIC ACID BEING NEUTRALIZED TO AT LEAST 50% BY SAID COMPOUND, AND POLYMERIZING THE MIXTURE IN THE PRESENCE OF A POLYMERIZATION ACCELERATOR WITH THE EVOLUTION IN THE REACTION MIXTURE OF AT LEAST ONE GAS FROM THE GROUP CONSISTING OF CARBON DIOXIDE AND AMMONIA IN ORDER TO PRODUCE A SOLID SALT OF A POLYACRYLIC ACID WHICH CAN BE COMMINUTED TO A POWDER.
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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |