Patent US3110702A successfully refreshed from Google Patents.
US3110702A
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Molecular weight control in polymerization of vinylidene monomers
Assignee: Monsanto Chemicals Ltd
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Filing: 1959-11-23
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Granted: 1963-11-12
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Expires: 1979-11-23
Abstract
No abstract record available.
Inventors
- 👤 Richard E Delacretaz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:43
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A PROCESS FOR POLYMERIZING A POLYMERIZABLE CHARGE OF THE GROUP CONSISTING OF (A) A VINYLIDENE MONOMER OF THE GROUP CONSISTING OF MONOVINYLIDENE AROMATIC HYDROCARBON CONTAINING A SINGLE AROMATIC NUCLEUS, A POLYMERIZABLE ALKYL ACRYLATE, A POLYMERIZABLE ALKUL METHACRYLATE, ACRYLONITRILE, METHACRYLONITRILE, AND MIXTURES THEREOF AND (B) MIXTURES OF SAID VINYLIDENE MONOMER WITH UP TO AN EQUAL AMOUNT BY WIGHT OF A COMONOMER OF THE GROUP CONSISTING OF ACRYLIC ACID, METHACRYLAMIDE, BUTADIENE, AND MIXTURES THEREOF, THE IMPROVEMENT WHICH COMPRISES LOWERING THE MOLECULAR WEIGHT OF THE PRODUCT BY CONDUCTING THE POLYMERIZATION IN THE PRESENCE OF 0.01-10% BY WEIGHT, BASED ON THE WEIGHT OF SAID VINYLIDENE MONOMER, OF A 1,1-DIARYLETHYLENE CORRESPONDING TO THE FORMULA:
Claim 2
Dependent Claim
110 words
IN A PROCESS FOR POLYMERIZING A POLYMERIZABLE CHARGE OF THE GROUP CONSISTING OF (A) A VINYLIDENE MONOMER OF THE GROUP CONSISTING OF MONOVINYLIDENE AROMATIC HYDROCARBON CONTAINING A SINGLE AROMATIC NUCLEUS, A POLYMERIZABLE ALKYL ACRYLATE, A POLYMERIZABLE ALKUL METHACRYLATE, ACRYLONITRILE, METHACRYLONITRILE, AND MIXTURES THEREOF AND (B) MIXTURES OF SAID VINYLIDENE MONOMER WITH UP TO AN EQUAL AMOUNT BY WIGHT OF A COMONOMER OF THE GROUP CONSISTING OF ACRYLIC ACID, METHACRYLAMIDE, BUTADIENE, AND MIXTURES THEREOF, THE IMPROVEMENT WHICH COMPRISES LOWERING THE MOLECULAR WEIGHT OF THE PRODUCT BY CONDUCTING THE POLYMERIZATION IN THE PRESENCE OF 0.01-10% BY WEIGHT, BASED ON THE WEIGHT OF SAID VINYLIDENE MONOMER, OF A 1,1-DIARYLETHYLENE CORRESPONDING TO 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) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |