Patent US3222339A successfully refreshed from Google Patents.
US3222339A
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Polymerization process using an organomagnesium compound as catalyst
Assignee: Rohm and Haas Co
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Filing: 1962-08-14
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Granted: 1965-12-07
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Expires: 1982-08-14
Abstract
No abstract record available.
Inventors
- 👤 Robert P Fellmann
- 👤 Mary J Kampf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:43
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/16; C08F20/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR POLYMERIZING AT LEAST ONE ESTER OF AN ACID FROM THE CLASS CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID, WHICH ESTERS ARE FREE OF GROUPS HAVING HYDROGEN REACTING IN THE ZEREWITINOFF TEST, WHICH COMPRISES MIXING BETWEEN ABOUT 3* AND 40*C. SAID ESTER AND ABOUT 0.3 TO ABOUT 1.5 MOLES OF AN ORANOMAGNESIUM COMPOUND PER MOLE OF SAID ESTER, THE ORGANOMAGNESIUM COMPOUND BEING OF THE FORMULA
Claim 2
Dependent Claim
67 words
A PROCESS FOR POLYMERIZING AT LEAST ONE ESTER OF AN ACID FROM THE CLASS CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID, WHICH ESTERS ARE FREE OF GROUPS HAVING HYDROGEN REACTING IN THE ZEREWITINOFF TEST, WHICH COMPRISES MIXING BETWEEN ABOUT 3* AND 40*C. SAID ESTER AND ABOUT 0.3 TO ABOUT 1.5 MOLES OF AN ORANOMAGNESIUM COMPOUND PER MOLE OF SAID ESTER, THE ORGANOMAGNESIUM COMPOUND BEING OF THE FORMULA
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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |