US3055860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anionic initiators
Assignee: Monsanto Chemicals Ltd
•
Filing: 1959-09-10
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Granted: 1962-09-25
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Expires: 1979-09-10
Abstract
No abstract record available.
Inventors
- 👤 Baer Massimo
- 👤 Michael J Vignale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:15
CPC Classifications
C; C08; C08F; C08F257/00; Y; Y10; Y10S; Y10S525/00; Y10S525/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN A PROCESS FOR POLYMERIZING AN ANIONICALLY-POLYMERIZABLE VINYLIDENE MONOMER OF THE GROUP CONSISITNG OF VINYL AROMATIC HYDROCARBONS, AR-ALKOXY VINYL AROMATIC HYDROCARBONS, CONJUGATED DIENES, METHYL ACRYLATE, AND METHYL METHACRYLATE IN THE PRESENT OF AN ANIONIC INITIATOR, THE IMPROVEMENT WHICH COMPRISES INITATING POLYMERIZATION BY CONTACTING THE MONOMER WITH AN INSOLUBLE POLMERIC IRON-RADICAL ADDUCT OF AN ALKALI METAL OF THE GROUP CONSISTING OF LIHIUM, SODIUM, AND POTASSIUM AND AN INSOLUBLE, CROSS-LINKED POLYMER CONTAINING A PLURALITY OF UNITS OF COMBINED VINYL NAPHTHALENE.
Claim 2
Dependent Claim
78 words
IN A PROCESS FOR POLYMERIZING AN ANIONICALLY-POLYMERIZABLE VINYLIDENE MONOMER OF THE GROUP CONSISITNG OF VINYL AROMATIC HYDROCARBONS, AR-ALKOXY VINYL AROMATIC HYDROCARBONS, CONJUGATED DIENES, METHYL ACRYLATE, AND METHYL METHACRYLATE IN THE PRESENT OF AN ANIONIC INITIATOR, THE IMPROVEMENT WHICH COMPRISES INITATING POLYMERIZATION BY CONTACTING THE MONOMER WITH AN INSOLUBLE POLMERIC IRON-RADICAL ADDUCT OF AN ALKALI METAL OF THE GROUP CONSISTING OF LIHIUM, SODIUM, AND POTASSIUM AND AN INSOLUBLE, CROSS-LINKED POLYMER CONTAINING A PLURALITY OF UNITS OF COMBINED VINYL NAPHTHALENE.
References Cited (Backward Citations)
US2608555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |