Patent US2963283A successfully refreshed from Google Patents.
Patent US3839263A successfully refreshed from Google Patents.
US3839263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cementitious compositions and methods
Assignee: Dow Chemical Co
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Filing: 1972-11-21
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Granted: 1974-10-01
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Expires: 1992-11-21
Abstract
Abstract The sealing of void spaces, e.g. as in geological formations and/or between metal shapes is accomplished with a liquid slurry of a particulate, water-soluble organic polymer in an organo solvent. The mixture of the polymer and solvent has a controlled set time to allow the emplacement of the slurry as a liquid. The slurry then sets to form a sealing cementitious material.
Inventors
- 👤 L Eilers
- 👤 C Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:19
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/92; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08L; C08L33/00; C08L33/24; C08L33/26; C08L71/00; C08L71/02; C09K17/00; C09K17/14; C09K17/18; C09K17/20; C09K17/22; C09K3/00; C09K3/10; C09K8/02; C09K8/03; C09K8/035; C09K8/32; C09K8/34; C09K8/42; C09K8/50; C09K2003/1034; C09K2003/105; C09K2200/00; C09K2200/02; C09K2200/0217; C09K2200/0239; C09K2200/06; C09K2200/0615; C09K2200/0625; C09K2200/0627; C09K2200/0632
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
128 words
A COMPOSITION OF MATTER WHICH COMPRISES A LIQUID SLURRY OF FROM ABOUT 0.1 TO ABOUT 2 PARTS BY WEIGHT OF A WATER-SOLUBLE CARBAMOYL POLYMER PER PART BY WEIGHT OF A LIQUID, GEL FORMING ORGANO SOLVENT THEREFOR COMPOSED OF A LIQUID ORGANIC NONSOLVENT FOR THE POLYMER SELECTED FROM HE GROUP CONSISTING OF PROPYLENE GLYCOL, WATER-MISCIBLE ALKYLENE OXIDE POLYMERS HAVING MOLECULAR WEIGHT UP TO ABOUT 600 AND WATER-MISCIBLE ALKYL AND ARYL ETHERS OF THE POLYMERS WHEREIN THE ETHERIFYING MOEITY CONTAINS FROM 1 TO 12 CARBONS AND (B) AT LEAST ABOUT 0.05 PART BY WEIGHT PER PART BY WEIGHT OF THE NON-SOLVENT, OF AN ORGANIC SOLVENT FOR THE POLYMER, THE AMOUNT OF THE LATTER BEING SUFFICIENT TO RENDER THE LIQUID MIXTURE A SOLVENT FOR THE POLYMER, SAID ORGANIC SOLVENT BEING GLYCEROL.
Claim 2
Dependent Claim
128 words
A COMPOSITION OF MATTER WHICH COMPRISES A LIQUID SLURRY OF FROM ABOUT 0.1 TO ABOUT 2 PARTS BY WEIGHT OF A WATER-SOLUBLE CARBAMOYL POLYMER PER PART BY WEIGHT OF A LIQUID, GEL FORMING ORGANO SOLVENT THEREFOR COMPOSED OF A LIQUID ORGANIC NONSOLVENT FOR THE POLYMER SELECTED FROM HE GROUP CONSISTING OF PROPYLENE GLYCOL, WATER-MISCIBLE ALKYLENE OXIDE POLYMERS HAVING MOLECULAR WEIGHT UP TO ABOUT 600 AND WATER-MISCIBLE ALKYL AND ARYL ETHERS OF THE POLYMERS WHEREIN THE ETHERIFYING MOEITY CONTAINS FROM 1 TO 12 CARBONS AND (B) AT LEAST ABOUT 0.05 PART BY WEIGHT PER PART BY WEIGHT OF THE NON-SOLVENT, OF AN ORGANIC SOLVENT FOR THE POLYMER, THE AMOUNT OF THE LATTER BEING SUFFICIENT TO RENDER THE LIQUID MIXTURE A SOLVENT FOR THE POLYMER, SAID ORGANIC SOLVENT BEING GLYCEROL.
Claim 3
Dependent Claim
13 words
A composition as in claim 1 wherein the carbamoyl polymer is a polyacrylamide.
Claim 4
Dependent Claim
14 words
A composition as in claim 1 wherein the carbamoyl is a styrene maleamide copolymer.
Claim 5
Dependent Claim
36 words
A composition as in claim 1 wherein the carbamoyl polymer is characterized by an ethylenically polymerized polyalkane backbone in which at least about 25 mole percent of the polymerized mers have substituent groups of the formula:
Claim 6
Dependent Claim
26 words
A composition as in claim 1 wherein the amount of organo solvent is controlled in relation to the organo non-solvent to provide a predetermined set time.
Claim 7
Dependent Claim
21 words
A composition as in claim 1 and including a finely divided solid oxide, hydroxide or a salt of a polyvalent metal.
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |