US2580315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion polymerization process
Assignee: Monsanto Chemicals Ltd
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Filing: 1947-04-05
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Granted: 1951-12-25
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Expires: 1967-04-05
Abstract
No abstract record available.
Inventors
- 👤 Harold F Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:26
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS WHICH COMPRISES POLYMERIZING BY HEATING TO POLYMERIZATION TEMPERATURE 100 PARTS OF STYRENE IN A POLYMRIZATION MEDIUM CONSISTING OF WATER, FROM 0.1 TO 0.5 PART OF AN EMULSIFYING AGENT TAKEN FROM THE GROUP CONSISTING OF PRIMARY ALKYL AMINE ESTERS IN WHICH THE ALKYL GROUP CONTAINS FROM 8 TO 22 CARBON ATOMS AND THE ESTER GROUP IS A RADICAL OF A LOWER ALIPHATIC ACID CONTAINING FROM 1 TO 5 CARBON ATOMS, AND FROM 0.005 TO 0.4 PART OF A WATER-SOLUBLE POLYMERIZATION CATALYST HAVING AN OXIDATION-REDUCTION POTENTIAL OF LESS THAN -1.5
Claim 2
Dependent Claim
90 words
A PROCESS WHICH COMPRISES POLYMERIZING BY HEATING TO POLYMERIZATION TEMPERATURE 100 PARTS OF STYRENE IN A POLYMRIZATION MEDIUM CONSISTING OF WATER, FROM 0.1 TO 0.5 PART OF AN EMULSIFYING AGENT TAKEN FROM THE GROUP CONSISTING OF PRIMARY ALKYL AMINE ESTERS IN WHICH THE ALKYL GROUP CONTAINS FROM 8 TO 22 CARBON ATOMS AND THE ESTER GROUP IS A RADICAL OF A LOWER ALIPHATIC ACID CONTAINING FROM 1 TO 5 CARBON ATOMS, AND FROM 0.005 TO 0.4 PART OF A WATER-SOLUBLE POLYMERIZATION CATALYST HAVING AN OXIDATION-REDUCTION POTENTIAL OF LESS THAN -1.5
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) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |