Patent US2543635A successfully refreshed from Google Patents.
US2543635A
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US
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Polymerization in the presence of an organo-phosphorus compound as an activator
Assignee: General Electric Co
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Filing: 1946-07-23
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Granted: 1951-02-27
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Expires: 1966-07-23
Abstract
No abstract record available.
Inventors
- 👤 John A Loritsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:22
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; C08F4/32; C08F283/00; C08F283/01; Y; Y10; Y10S; Y10S260/00; Y10S260/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
THE METHOD OF POLYMERIZING A NON-AQUEOUS POLYMERIZABLE SYSTEM FREE OF UNSATURATED DRYING OILS AND DRYING OIL ACIDS AND CONTAINING AN UNSATURATED ALKYD RESIN AND A TERMINALLY UNSATURATED POLYMERIZABLE ORGANIC COMPOSITION IN WHICH THE TERMINAL UNSATURATION COMPRISES A TERMINAL ETHYLENIC DOUBLE BOND, WHICH METHOD COMPRISES CARRYING OUT THE POLYMERIZATION IN THE PRESENCE OF (A) A VINYL POLYMERIZATION CATALYST WHICH GIVES UP AN ATOM OF OXYGEN IN THE PRESENCE OF PHENYL PHOSPHINIC ACID AND IS SELECTED FROM THE CLASS CONSISTING OF DIALKYL PEROXIDES, ALKYL HYDROPEROXIDES, ALKYL ESTERS OF PERACIDS, AND MIXED ALIPHATIC AND AROMATIC PEROXIDES, AND (B) FROM 0.01 TO 5 PER CENT, BY WEIGHT, BASED ON THE WEIGHT OF THE POLYMERIZABLE COMPOSITION OF PHENYL PHOSPHINIC ACID, THE RATE OF POLYMERIZATION BEING SUBSTANTIALLY GREATER THAN THE RATE OF POLYMERIZATION WHERE THE PHENYL PHOSPHINIC ACID IS ABSENT.
Claim 2
Independent Claim
134 words
THE METHOD OF POLYMERIZING A NON-AQUEOUS POLYMERIZABLE SYSTEM FREE OF UNSATURATED DRYING OILS AND DRYING OIL ACIDS AND CONTAINING AN UNSATURATED ALKYD RESIN AND A TERMINALLY UNSATURATED POLYMERIZABLE ORGANIC COMPOSITION IN WHICH THE TERMINAL UNSATURATION COMPRISES A TERMINAL ETHYLENIC DOUBLE BOND, WHICH METHOD COMPRISES CARRYING OUT THE POLYMERIZATION IN THE PRESENCE OF (A) A VINYL POLYMERIZATION CATALYST WHICH GIVES UP AN ATOM OF OXYGEN IN THE PRESENCE OF PHENYL PHOSPHINIC ACID AND IS SELECTED FROM THE CLASS CONSISTING OF DIALKYL PEROXIDES, ALKYL HYDROPEROXIDES, ALKYL ESTERS OF PERACIDS, AND MIXED ALIPHATIC AND AROMATIC PEROXIDES, AND (B) FROM 0.01 TO 5 PER CENT, BY WEIGHT, BASED ON THE WEIGHT OF THE POLYMERIZABLE COMPOSITION OF PHENYL PHOSPHINIC ACID, THE RATE OF POLYMERIZATION BEING SUBSTANTIALLY GREATER THAN THE RATE OF POLYMERIZATION WHERE THE PHENYL PHOSPHINIC ACID IS ABSENT.
References Cited (Backward Citations)
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US2356925A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |