Patent US3214490A successfully refreshed from Google Patents.
US3214490A
Expired / Lapsed
US
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Process for accelerating polymerization of ethylenically unsaturated compounds using organotin mercaptoesters
Assignee: M&T Chemicals Inc
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Filing: 1960-08-26
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Granted: 1965-10-26
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Expires: 1980-08-26
Abstract
No abstract record available.
Inventors
- 👤 John R Leebrick
- 👤 Kudisch Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:47
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; C08F4/32; C08F283/00; C08F283/01; C08F4/06; C08F4/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A PROCESS OF CATALYZING WITH A HYDROPEROXIDE CATALYST, THE POLYMERIZATION OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ETHYLENICALLY-UNSATURATED RESINS, ETHYLENICALLY-UNSATURATED MONOMERS, AND MIXTURES THEREOF, THE IMPROVEMENT COMPRISING ACCELERATING THE RATE OF POLYMERIZATION BY INCORPORATING THEREIN BETWEEN ABOUT 0.05% AND 0.2% OF A COMPOUND HAVING THE FORMULA R2SN(SR''COOR")2, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND MONOCYCLIC ARYL RADICALS HAVING 1 TO 8 CARBON ATOMS, R'' IS AN ALKYLENE RADICAL HAVING 1 TO 7 CARBON ATOMS, AND R" IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND SATURATED ALCOHOL RESIDUES HAVING 1 TO 18 CARBON ATOMS.
Claim 2
Dependent Claim
101 words
IN A PROCESS OF CATALYZING WITH A HYDROPEROXIDE CATALYST, THE POLYMERIZATION OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ETHYLENICALLY-UNSATURATED RESINS, ETHYLENICALLY-UNSATURATED MONOMERS, AND MIXTURES THEREOF, THE IMPROVEMENT COMPRISING ACCELERATING THE RATE OF POLYMERIZATION BY INCORPORATING THEREIN BETWEEN ABOUT 0.05% AND 0.2% OF A COMPOUND HAVING THE FORMULA R2SN(SR''COOR")2, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND MONOCYCLIC ARYL RADICALS HAVING 1 TO 8 CARBON ATOMS, R'' IS AN ALKYLENE RADICAL HAVING 1 TO 7 CARBON ATOMS, AND R" IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND SATURATED ALCOHOL RESIDUES HAVING 1 TO 18 CARBON ATOMS.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |