US3068185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing aqueous dispersions of clay coated with polymers of ethylenically unsaturated monomers and aqueous film forming compositions produced thereby
Assignee: Minerals and Chemicals Philipp Corp
•
Filing: 1958-06-13
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Granted: 1962-12-11
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Expires: 1978-06-13
Abstract
No abstract record available.
Inventors
- 👤 Stamberger Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:50
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/40; C09C1/42; C04; C04B; C04B20/00; C04B20/10; C04B20/1018; C04B20/1029; C04B20/1033; C08; C08F; C08F2/00; C08F2/44; C01; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/80; C01P2006/00; C01P2006/60; C01P2006/90; C04B2103/00; C04B2103/0045; C04B2103/0046; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD FOR PREPARING A POLYMER COATED CLAY COMPOSITION WHICH COMPRISES: DISPERSING IN WATER KAOLIN CLAY THE PARTICLES OF WHICH HAVE SORBED THEREON A SMALL QUANTITY OF A FREERADICAL GENERATING ADDITION POLYMERIZATION INITIATOR; MIXING INTO SAID DESPERSION AT LEAST ONE MONOETHYLENICALLY UNSATURATED MONOMER WHICH IS POLYMERIZABLE SOLELY BY ADDITION THROUGH ALIPHATIC CARBON TO CARBON UNSATURATION, SAID MONOMER BEING EMPLOYED IN AN AMOUNT WITHIN THE RANGE OF FROM ABOUT 5 TO 30 PARTS BY WEIGHT TO 95 TO 70 PARTS BY WEIGHT OF SAID KAOLIN CLAY; AND HEATING SAID DISPERSION AT A TEMPERATURE BELOW WHICH THE DISPERSION HAS APPRECIABLE VAPOR PRESSURE THEREBY TO FORM AN AQUEOUS DISPERSION OF POLYMER COATED CLAY.
Claim 2
Independent Claim
110 words
A METHOD FOR PREPARING A POLYMER COATED CLAY COMPOSITION WHICH COMPRISES: DISPERSING IN WATER KAOLIN CLAY THE PARTICLES OF WHICH HAVE SORBED THEREON A SMALL QUANTITY OF A FREERADICAL GENERATING ADDITION POLYMERIZATION INITIATOR; MIXING INTO SAID DESPERSION AT LEAST ONE MONOETHYLENICALLY UNSATURATED MONOMER WHICH IS POLYMERIZABLE SOLELY BY ADDITION THROUGH ALIPHATIC CARBON TO CARBON UNSATURATION, SAID MONOMER BEING EMPLOYED IN AN AMOUNT WITHIN THE RANGE OF FROM ABOUT 5 TO 30 PARTS BY WEIGHT TO 95 TO 70 PARTS BY WEIGHT OF SAID KAOLIN CLAY; AND HEATING SAID DISPERSION AT A TEMPERATURE BELOW WHICH THE DISPERSION HAS APPRECIABLE VAPOR PRESSURE THEREBY TO FORM AN AQUEOUS DISPERSION OF POLYMER COATED CLAY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |