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Patent US2803622A successfully refreshed from Google Patents.
US2803622A
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Process for copolymerizing acenaphthylene with styrene
Assignee: Monsanto Chemicals Ltd
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Filing: 1953-08-03
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Granted: 1957-08-20
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Expires: 1973-08-03
Abstract
No abstract record available.
Inventors
- 👤 Earl C Chapin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:21
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F212/12; C08F212/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A PROCESS FOR POLYMERIZING FROM 3-25% BY WEIGHT OF ACENAPHTHYLENE WITH FROM 97-75% BY WEIGHT RESPECTIVELY, OF A MEMBER OF THE GROUP CONSISTING OF STYRENE, ORTHOMETHYL STYRENE, METAMETHYL STYRENE, PARAMETHYL STYRENE AND MIXTURES THEREOF, WHICH CONSISTS OF EMULSIFYING 100 PARTS OF TOTAL MONOMERS IN FROM 100-400 PARTS BY WEIGHT OF WATER WITH THE AID OF FROM 0.1-3.0 PARTS OF AN EMULSIFYING AGENT AND POLYMERZING THE MONOMERS AT A TEMPERATURE RANGING FROM 30*C. BELOW REFLUX TEMPERATURE TO 200*C. AND AT A PRESSURE RANGING FROM 1 ATMOSPHERE TO 500 ATMOSPHERES IN THE PRESENCE OF FROM 0.1-1.0 PART OF A CATALYST MIXTURE CONSISTING OF A COMPOUND TAKEN FROM THE GROUP CONSISTING OF AMMONIUM AND ALKALI METAL SALTS OF PERSULFURIC ACID AND AN ALKANOLAMINE OF THE GROUP CONSISTING OF MONOETHANOLAMINE, DIETHANOLAMINE, TRIETHANOLAMINE, PROPANOLAMINE, AND BUTANOLAMINE, THE WEIGHT RATIO OF THE PERSULFATE SALT TO ALKANOLAMINE VARYING FROM 1:1 TO 1:2, ALL OF SAID ALKANOLAMINE BEING ADDED TO THE AQUEOUS EMULSION BEFORE THE POLYMERIZATION IS INITIATED AND THE PERSULFATE SALT BEING ADDED TO THE REACTION MIXTURE THROUGHOUT POLYMERIZATION.
Claim 2
Dependent Claim
172 words
A PROCESS FOR POLYMERIZING FROM 3-25% BY WEIGHT OF ACENAPHTHYLENE WITH FROM 97-75% BY WEIGHT RESPECTIVELY, OF A MEMBER OF THE GROUP CONSISTING OF STYRENE, ORTHOMETHYL STYRENE, METAMETHYL STYRENE, PARAMETHYL STYRENE AND MIXTURES THEREOF, WHICH CONSISTS OF EMULSIFYING 100 PARTS OF TOTAL MONOMERS IN FROM 100-400 PARTS BY WEIGHT OF WATER WITH THE AID OF FROM 0.1-3.0 PARTS OF AN EMULSIFYING AGENT AND POLYMERZING THE MONOMERS AT A TEMPERATURE RANGING FROM 30*C. BELOW REFLUX TEMPERATURE TO 200*C. AND AT A PRESSURE RANGING FROM 1 ATMOSPHERE TO 500 ATMOSPHERES IN THE PRESENCE OF FROM 0.1-1.0 PART OF A CATALYST MIXTURE CONSISTING OF A COMPOUND TAKEN FROM THE GROUP CONSISTING OF AMMONIUM AND ALKALI METAL SALTS OF PERSULFURIC ACID AND AN ALKANOLAMINE OF THE GROUP CONSISTING OF MONOETHANOLAMINE, DIETHANOLAMINE, TRIETHANOLAMINE, PROPANOLAMINE, AND BUTANOLAMINE, THE WEIGHT RATIO OF THE PERSULFATE SALT TO ALKANOLAMINE VARYING FROM 1:1 TO 1:2, ALL OF SAID ALKANOLAMINE BEING ADDED TO THE AQUEOUS EMULSION BEFORE THE POLYMERIZATION IS INITIATED AND THE PERSULFATE SALT BEING ADDED TO THE REACTION MIXTURE THROUGHOUT POLYMERIZATION.
References Cited (Backward Citations)
US2563524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |