US2683698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable emulsions of hydrocarbon polymers and method of making the same
Assignee: Dow Chemical Co
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Filing: 1952-11-14
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Granted: 1954-07-13
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Expires: 1972-11-14
Abstract
No abstract record available.
Inventors
- 👤 Jack H Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:50
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08K; C08K3/00; C08K3/28; C08J2325/00; C08J2325/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A METHOD WHICH COMPRISES STABILIZING AN AQUEOUS COLLOIDAL DISPERSION OF FROM 30 TO 50 PER CENT BY WEIGHT OF A POLYMER COMPOSED OF AT LEAST ONE POLYMERIZED UNSATURATED HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF MONOVINYL AROMATIC HYDROCARBONS OF THE BENZENES SERIES AND MIXTURES OF FROM 50 TO 99 PER CENT BY WEIGHT OF AT LEAST ONE SUCH MONOVINYL AROMATIC HYDROCARBON AND FROM 50 TO 1 PER CENT OF AN ALIPHATIC CONJUGATED DIOLEFIN CONTAINING FROM 4 TO 6 CARBON ATOMS IN THE MOLECULE, THE SAID AQUEOUS COLLOIDAL DISPERSION HAVING A SUBSTANTIALLY NEUTRAL TO ALKALINE PH VALUE INCIDENT TO ITS MANUFACTURE, BY INCORPORATING WITH SAID AQUEOUS COLLOIDAL DISPERSION, BASED ON THE WEIGHT OF THE POLYMER, STABLIZING PROPORTIONS WITHIN THE RANGE OF FROM 0.4 TO 2 PER CENT OF SODIUM AZIDE, FROM 0.4 TO 2 PER CENT OF AT LEAST ONE ALKALI METAL BICARBONATE SELECTED FROM THE GROUP CONSISTING OF SODIUM BICARBONATE AND POTASSIUM BICARBONATE, AND AT LEAST ONE ALKALI SELECTED FROM THE GROUP CONSISTING OF AMMONIUM HYDROXIDE, SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE, IN AMOUNT OF AT LEAST 0.1 PER CENT, TO FORM AND AQUEOUS COMPOSITION HAVING A PH VALUE BETWEEN 9 AND 12.
Claim 2
Independent Claim
192 words
A METHOD WHICH COMPRISES STABILIZING AN AQUEOUS COLLOIDAL DISPERSION OF FROM 30 TO 50 PER CENT BY WEIGHT OF A POLYMER COMPOSED OF AT LEAST ONE POLYMERIZED UNSATURATED HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF MONOVINYL AROMATIC HYDROCARBONS OF THE BENZENES SERIES AND MIXTURES OF FROM 50 TO 99 PER CENT BY WEIGHT OF AT LEAST ONE SUCH MONOVINYL AROMATIC HYDROCARBON AND FROM 50 TO 1 PER CENT OF AN ALIPHATIC CONJUGATED DIOLEFIN CONTAINING FROM 4 TO 6 CARBON ATOMS IN THE MOLECULE, THE SAID AQUEOUS COLLOIDAL DISPERSION HAVING A SUBSTANTIALLY NEUTRAL TO ALKALINE PH VALUE INCIDENT TO ITS MANUFACTURE, BY INCORPORATING WITH SAID AQUEOUS COLLOIDAL DISPERSION, BASED ON THE WEIGHT OF THE POLYMER, STABLIZING PROPORTIONS WITHIN THE RANGE OF FROM 0.4 TO 2 PER CENT OF SODIUM AZIDE, FROM 0.4 TO 2 PER CENT OF AT LEAST ONE ALKALI METAL BICARBONATE SELECTED FROM THE GROUP CONSISTING OF SODIUM BICARBONATE AND POTASSIUM BICARBONATE, AND AT LEAST ONE ALKALI SELECTED FROM THE GROUP CONSISTING OF AMMONIUM HYDROXIDE, SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE, IN AMOUNT OF AT LEAST 0.1 PER CENT, TO FORM AND AQUEOUS COMPOSITION HAVING A PH VALUE BETWEEN 9 AND 12.
References Cited (Backward Citations)
US2447878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |