US2592526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing ethylene in aqueous emulsion
Assignee: Imperial Chemical Industries Ltd
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Filing: 1948-11-12
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Granted: 1952-04-15
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Expires: 1968-11-12
Abstract
No abstract record available.
Inventors
- 👤 Seed Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:56
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS FOR THE MANUFACTURE OF IMPROVED AQUEOUS EMULSIONS OF SOLID ETHYLENE POLYMERS WHICH COMPRISES POLYMERIZING A POLYMERIZABLE COMPOSITION COMPRISING ETHYLENE AT A TEMPERATURE OF FROM ABOUT 50* TO ABOUT 400* C. AND AT A PRESSURE EXCEEDING 200 ATMOSPHERES, IN THE PRESENCE OF WATER, A WATER-SOLUBLE NON-IONIC ORGANIC EMULFIFYING AGENT OF THE CLASS CONSISTING OF POLYVINYL ALCOHOL, HYDROLYZED POLYVINYL ACETATE POLYMERS, THE ALKYL ETHER DERIVATIVES OF CELLULOSE, THE FATTY ACID ESTERS OF MANNITAN, THE FATTY ACID ESTERS OF SORBITAN, THE MONOETHERS OF POLYETHYLENE GLYCOLS, AND THE MONOETHERS OF POLYETHYLENE GLYCOLS; AND A WATER-SOLUBLE IONIC EMULSIFYING AGENT OF THE CLASS CONSISTING OF THE SALTS OF ORGANIC SULPHONATES AND THE SALTS OF ORGANIC SULPHATES.
Claim 2
Dependent Claim
112 words
A PROCESS FOR THE MANUFACTURE OF IMPROVED AQUEOUS EMULSIONS OF SOLID ETHYLENE POLYMERS WHICH COMPRISES POLYMERIZING A POLYMERIZABLE COMPOSITION COMPRISING ETHYLENE AT A TEMPERATURE OF FROM ABOUT 50* TO ABOUT 400* C. AND AT A PRESSURE EXCEEDING 200 ATMOSPHERES, IN THE PRESENCE OF WATER, A WATER-SOLUBLE NON-IONIC ORGANIC EMULFIFYING AGENT OF THE CLASS CONSISTING OF POLYVINYL ALCOHOL, HYDROLYZED POLYVINYL ACETATE POLYMERS, THE ALKYL ETHER DERIVATIVES OF CELLULOSE, THE FATTY ACID ESTERS OF MANNITAN, THE FATTY ACID ESTERS OF SORBITAN, THE MONOETHERS OF POLYETHYLENE GLYCOLS, AND THE MONOETHERS OF POLYETHYLENE GLYCOLS; AND A WATER-SOLUBLE IONIC EMULSIFYING AGENT OF THE CLASS CONSISTING OF THE SALTS OF ORGANIC SULPHONATES AND THE SALTS OF ORGANIC SULPHATES.
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) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |