Patent US2819239A successfully refreshed from Google Patents.
US2819239A
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Portland cement-vinylidene chloride polymer composition, method of making, and method of using
Assignee: Dow Chemical Co
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Filing: 1955-12-06
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Granted: 1958-01-07
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Expires: 1975-12-06
Abstract
No abstract record available.
Inventors
- 👤 John F Eberhard
- 👤 Park Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:04
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/24; C04B24/26; C04B24/2682; C04B28/00; C04B28/02; C04B28/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A COMPOSITION FOR CEMENTING WHICH COMPRISES A SLURRY OF PORTLAND CEMENT, A LATEX OF A VINYLIDENE CHLORIDE COPOLYMER SELECTED FROM THE GROUP CONSISTING OF A COPOLYMER OF VINYLIDENE CHLORIDE AND ACRYLONITRILE IN THE PROPORTIONS OF 70 TO 97 PERCENT BY WEIHGT OF VINYLIDENE CHLORIDE, THE BALANCE BEING ACRYLONITRILE, A COPOLYMER OF VINYLIDENE CHLORIDE AND VINYL CHLORIDE IN THE PROPORTIONS OF 95 TO 5 PERCENT OF VINYLIDENE CHLORIDE, THE BALANCE BEING VINYL CHLORIDE, AND A COPOLYMER OF VINYLIDENE CHLORIDE AND VINYL ACETATE IN THE PROPORTIONS OF 95 TO 5 PERCENT OF VINYLIDENE CHLORIDE, THE BALANCE BEING VINYL ACETATE, THE AMOUNT OF COPOLYMER BEING FROM 2.5 TO 35.2 PERCENT OF THE WEIGHT OF THE CEMENT, THE PARTICLES OF SAID COPOLYMER HAVING A DIAMETER OF FROM 1800 TO 5000 ANGSTROMS, A NONIONIC WETTING AGENT IN AMOUNT BETWEEN 0.4 AND 5.6 PERCENT OF THE WEIGHT OF THE CEMENT, AND WATER IN AMOUNT BETWEEN ABOUT 25 TO 41 PERCENT OF THE WEIGHT OF THE COMPOSITION.
Claim 2
Dependent Claim
160 words
A COMPOSITION FOR CEMENTING WHICH COMPRISES A SLURRY OF PORTLAND CEMENT, A LATEX OF A VINYLIDENE CHLORIDE COPOLYMER SELECTED FROM THE GROUP CONSISTING OF A COPOLYMER OF VINYLIDENE CHLORIDE AND ACRYLONITRILE IN THE PROPORTIONS OF 70 TO 97 PERCENT BY WEIHGT OF VINYLIDENE CHLORIDE, THE BALANCE BEING ACRYLONITRILE, A COPOLYMER OF VINYLIDENE CHLORIDE AND VINYL CHLORIDE IN THE PROPORTIONS OF 95 TO 5 PERCENT OF VINYLIDENE CHLORIDE, THE BALANCE BEING VINYL CHLORIDE, AND A COPOLYMER OF VINYLIDENE CHLORIDE AND VINYL ACETATE IN THE PROPORTIONS OF 95 TO 5 PERCENT OF VINYLIDENE CHLORIDE, THE BALANCE BEING VINYL ACETATE, THE AMOUNT OF COPOLYMER BEING FROM 2.5 TO 35.2 PERCENT OF THE WEIGHT OF THE CEMENT, THE PARTICLES OF SAID COPOLYMER HAVING A DIAMETER OF FROM 1800 TO 5000 ANGSTROMS, A NONIONIC WETTING AGENT IN AMOUNT BETWEEN 0.4 AND 5.6 PERCENT OF THE WEIGHT OF THE CEMENT, AND WATER IN AMOUNT BETWEEN ABOUT 25 TO 41 PERCENT OF THE WEIGHT OF THE COMPOSITION.
References Cited (Backward Citations)
US2662064A
Cited
FR1019640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |