US3202642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homopolymers and copolymers of isopropenylnaphthalenes and processes of producing the same
Assignee: Honeywell International Inc
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Filing: 1961-02-27
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Granted: 1965-08-24
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Expires: 1981-02-27
Abstract
No abstract record available.
Inventors
- 👤 George F Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:33
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A POLYMER SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF AN ISOPROPENYLNAPHTHALENE AND COPOLYMERS OF AN ISOPROPENYLNAPHTHALENE AND AN ETHYLENICALLY UNSATURATED COMPOUND, SAID POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 10,000 AND BEING SUIABLE FOR USE AS A MOLDING COMPOUND, PREPARED BY A PROCESS WHICH COMPRISES POLYMERIZING A MONOMER MATERIAL SELECTED FROM THE GROUP CONSISTING OF A MONOMER OF AN ISOPROPENYLNAPHTHALENE AND A MONOMER MIXTURE OF AN ISOPROPENYLNAPHTHALENE AND AN ETHYLENICALLY UNSATURATED COMPOUND IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS, ALKALI METAL HYDRIDES, ALKALI METAL ALKYLS, ALKALI METAL ARYLS AND ADDITION COMPOUNDS OF ALKALI METALS WITH POLYNUCLEAR AROMATIC HYDROCARBONS IN AMOUNT ABOUT 0.01 TO 5% BY WEIGHT OF THE MONOMER, AND RECOVERING THE POLYMER FROM THE RESULTING POLYMERIZATION MASS.
Claim 2
Dependent Claim
127 words
A POLYMER SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF AN ISOPROPENYLNAPHTHALENE AND COPOLYMERS OF AN ISOPROPENYLNAPHTHALENE AND AN ETHYLENICALLY UNSATURATED COMPOUND, SAID POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 10,000 AND BEING SUIABLE FOR USE AS A MOLDING COMPOUND, PREPARED BY A PROCESS WHICH COMPRISES POLYMERIZING A MONOMER MATERIAL SELECTED FROM THE GROUP CONSISTING OF A MONOMER OF AN ISOPROPENYLNAPHTHALENE AND A MONOMER MIXTURE OF AN ISOPROPENYLNAPHTHALENE AND AN ETHYLENICALLY UNSATURATED COMPOUND IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS, ALKALI METAL HYDRIDES, ALKALI METAL ALKYLS, ALKALI METAL ARYLS AND ADDITION COMPOUNDS OF ALKALI METALS WITH POLYNUCLEAR AROMATIC HYDROCARBONS IN AMOUNT ABOUT 0.01 TO 5% BY WEIGHT OF THE MONOMER, AND RECOVERING THE POLYMER FROM THE RESULTING POLYMERIZATION MASS.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |