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US2701245A
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Bead polymerization of methyl methacrylate
Assignee: Eastman Kodak Co
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Filing: 1951-05-01
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Granted: 1955-02-01
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Expires: 1971-05-01
Abstract
No abstract record available.
Inventors
- 👤 Lynn William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:55
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/14; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; C08F2/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD OF FORMING DISCRETE PLYMERIC SPHERICAL BEADS OF 1 TO 20 MICRONS IN DIAMETER FROM WATER INSOLUBLE MONOMERIC METHYL METHACRYLATE WHICH COMPRISES VIGOROUSLY AGITATING THE MONOMER IN WATER IN THE PRESENCE OF A DIOCTYL ESTER OF SODIUM SULFOSUCCINIC ACID AND A POLYMERIZATION CATALYST TO PRODUCE A NONPOLMERIZED MIXTURE FROM WHICH SUCH POYMERIC BEADS CAN BE FORMED, STOPPING THE AGITATION BEFORE ANY SUBSTANTIAL POLYMERIZATION TAKES PLACE, AND PERMITTING POLYMERIZATION TO OCCUR WHILE THE MIXTURE REMAINS QUIESCENT WHEREBY SUCH DISCRETE POLYMERIC SPHERICAL BEADS ARE FORMED.
Claim 2
Independent Claim
84 words
A METHOD OF FORMING DISCRETE PLYMERIC SPHERICAL BEADS OF 1 TO 20 MICRONS IN DIAMETER FROM WATER INSOLUBLE MONOMERIC METHYL METHACRYLATE WHICH COMPRISES VIGOROUSLY AGITATING THE MONOMER IN WATER IN THE PRESENCE OF A DIOCTYL ESTER OF SODIUM SULFOSUCCINIC ACID AND A POLYMERIZATION CATALYST TO PRODUCE A NONPOLMERIZED MIXTURE FROM WHICH SUCH POYMERIC BEADS CAN BE FORMED, STOPPING THE AGITATION BEFORE ANY SUBSTANTIAL POLYMERIZATION TAKES PLACE, AND PERMITTING POLYMERIZATION TO OCCUR WHILE THE MIXTURE REMAINS QUIESCENT WHEREBY SUCH DISCRETE POLYMERIC SPHERICAL BEADS ARE FORMED.
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) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |