US2913444A
Expired / Lapsed
US
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Process for polymerizing conjugated diolefins using a mixture of metallic lithium and alkyl lithium as the catalyst
Assignee: Goodrich Corp
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Filing: 1956-01-09
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Granted: 1959-11-17
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Expires: 1976-01-09
Abstract
No abstract record available.
Inventors
- 👤 Hugh E Diem
- 👤 Tucker Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:38
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; F; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN THE PREPARATION OF A MASS POLYMER OF METHYLALPHA-CHLOROACRYLATE FROM THE CORRESPONDING MONOMER CONTAINING AS IMPURITIES, MOISTURE AND AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF ALCOHOLS AND A TRACE OF PHENOLIC POLYMERIZATION INHIBITOR, THE IMPROVEMENT WHICH CONSISTS IN CONTACTING SAID MONOMER WITH A PENTOXIDE OF AN ELEMENT OF GROUP V-A OF THE PEROIDIC TABLE OF ELEMENTS HAVING AN ATOMIC NUMBER FROM 15 TO 51, SEPARATING THE UNDISSOLVED RESIDUE FROM THE MONOMER, AND THEREUPON MAS POLYMERIZING THE RESULTING MONOMERIC METHYL-ALPHA-CHLOROACRYLATE.
Claim 2
Dependent Claim
81 words
IN THE PREPARATION OF A MASS POLYMER OF METHYLALPHA-CHLOROACRYLATE FROM THE CORRESPONDING MONOMER CONTAINING AS IMPURITIES, MOISTURE AND AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF ALCOHOLS AND A TRACE OF PHENOLIC POLYMERIZATION INHIBITOR, THE IMPROVEMENT WHICH CONSISTS IN CONTACTING SAID MONOMER WITH A PENTOXIDE OF AN ELEMENT OF GROUP V-A OF THE PEROIDIC TABLE OF ELEMENTS HAVING AN ATOMIC NUMBER FROM 15 TO 51, SEPARATING THE UNDISSOLVED RESIDUE FROM THE MONOMER, AND THEREUPON MAS POLYMERIZING THE RESULTING MONOMERIC METHYL-ALPHA-CHLOROACRYLATE.
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) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |