Patent US2822344A successfully refreshed from Google Patents.
US2822344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated polyester resin composition containing a polymerization promoter and process of making same
Assignee: Wyeth Holdings LLC
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Filing: 1954-07-06
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Granted: 1958-02-04
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Expires: 1974-07-06
Abstract
No abstract record available.
Inventors
- 👤 Duhnkrack George Bliss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:04
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD OF CURING A RESINOUS COMPOSITION WHICH COMPRISES PREPARING A POLYMERIZABLE COMPOSITION OF (1) A POLYMERIZABLE ETHYLENICALLY UNSATURATED POLYHYDRIC ALCOHOL-POLYCARBOXYLIC ACID POLYESTER, (2) A COMPOUND CONTAINING A POLYMERIZABLE CH2=C< GROUP AND HAVING A BOILING POINT OF AT LEAST 60*C., (3) FROM ABOUT 0.001 TO ABOUT 10 PARTS PER MILLION, BASED, ON THE TOTAL WEIGHT OF (1) AND (2), AND A COPPER SALT CALCULATED AS DISSOLVED METALLIC COPPER, AND (4) ABOUT 0.005-0.2% BASED ON THE TOTAL WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE GUANIDINES, ISOMELAMINES, AMIDINES, BIGUANIDES, GUANYLUREAS, PSEUDOUREAS, PSEUDOTHIOUREAS AND THE SALTS THEREOF, AND CONTACTING SAID COMPOSITION WITH A FREE RADICAL POLYMERIZATION CATALYST.
Claim 2
Independent Claim
108 words
A METHOD OF CURING A RESINOUS COMPOSITION WHICH COMPRISES PREPARING A POLYMERIZABLE COMPOSITION OF (1) A POLYMERIZABLE ETHYLENICALLY UNSATURATED POLYHYDRIC ALCOHOL-POLYCARBOXYLIC ACID POLYESTER, (2) A COMPOUND CONTAINING A POLYMERIZABLE CH2=C< GROUP AND HAVING A BOILING POINT OF AT LEAST 60*C., (3) FROM ABOUT 0.001 TO ABOUT 10 PARTS PER MILLION, BASED, ON THE TOTAL WEIGHT OF (1) AND (2), AND A COPPER SALT CALCULATED AS DISSOLVED METALLIC COPPER, AND (4) ABOUT 0.005-0.2% BASED ON THE TOTAL WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE GUANIDINES, ISOMELAMINES, AMIDINES, BIGUANIDES, GUANYLUREAS, PSEUDOUREAS, PSEUDOTHIOUREAS AND THE SALTS THEREOF, AND CONTACTING SAID COMPOSITION WITH A FREE RADICAL POLYMERIZATION CATALYST.
References Cited (Backward Citations)
US2255313A
Cited
US2332898A
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US2380710A
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US2430591A
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US2452669A
Cited
US2680722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |