US3663656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making novel graft copolymer blends
Assignee: Monsanto Co
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Filing: 1970-06-22
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Granted: 1972-05-16
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Expires: 1990-06-22
Abstract
Abstract A LATEX OF A RUBBERY POLYMER HAVING A PARTICLE SIZE OF LESS THAN 0.25 MICRON AND A POLYMERIZABLE VINYLIDENE MONOMER FORMULATION IS SUBJECTED TO POLYMERIZATION CONDITIONS TO PRODUCE POLYMERIZATION AND GRAFTING OF AT LEAST A PORTION OF THE MONOMER FORMULATION ONTO THE RUBBERY POLYMER. SUBSEQUENTLY, A LATEX OF AGGLOMERATED RUBBERY POLYMER HAVING A PARTICLE SIZE OF 0.35-1.2 MICRONS IS ADDED TO THE POLYMERIZING LATEX AND POLYMERIZATION OF THE VINYLIDENE MONOMER FORMULATION IS CONTINUED TO PRODUCE GRAFTING OF AT LEAST A PORTION THEREOF ONTO THE AGGLOMERATED RUBBERY POLYMER.
Inventors
- 👤 Emory A Ford
- 👤 Speros P Nemphos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:47
CPC Classifications
C; C08; C08F; C08F291/00; C08F291/02; C08F285/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |