US2965589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous dispersions of zinc stearate and polyethylene glycol monoesters
Assignee: Dow Chemical Co
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Filing: 1956-10-26
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Granted: 1960-12-20
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Expires: 1976-10-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond M Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:35
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/124
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A METHOD OF FORMING AN ADHERENT NON-DUSTING LUBRICANT COATING ON SURFACES OF PLASTICS WHICH COMPRISES CONTACTING POLYSTYRENE WITH A DISPERSION OF ZINC STEARATE IN WATER CONTAINING AT LEAST ONE MONOESTER OF A POLYETHYLENE GLYCOL SELECTED FROM THE GROUP CONSISTING OF MONOSTEARATES OF POLYETHYLENE GLYCOLS HAVING A MOLECULAR WEIGHT BETWEEN 400 AND 1500, MONOOLEATES OF POLYETHYLENE GLYCOLS HAVING A MOLECULAR WEIGHT BETWEEN 400 AND 6000 AND MONOLAURATES OF POLYETHYLENE GLYCOLS HAVING A MOLECULAR WEIGHT BETWEEN 400 AND 4000, SAID DISPERSION CONTAINING THE INGREDIENTS IN PROPORTIONS CORRESPONDING TO FROM 1 TO 10 PARTS BY WEIGHT OF THE ZINC STEARATE AND FROM 1 TO 10 PARTS OF THE MONOESTER AND IN A CONCENTRATION OF FROM 2 TO 20 PERCENT BY WEIGHT OF THE SUM OF THE WEIGHTS OF THE ZINC STEARATE AND THE MONOESTER, BASED ON THE TOTAL WEIGHT OF THE DISPERSION, SAID DISPERSION BEING EMPLOYED IN AMOUNTS CORRESPONDING TO FROM 300 TO 4,000 PARTS BY WEIGHT OF THE SUM OF THE WEIGHTS OF THE ZINC STEARATE AND THE POLYETHYLEN GLYCOL MONOESTER PER MILLION PARTS BY WEIGHT OF THE POLYSTYRENE AND DRYING THE POLYSTYRENE.
Claim 2
Independent Claim
181 words
A METHOD OF FORMING AN ADHERENT NON-DUSTING LUBRICANT COATING ON SURFACES OF PLASTICS WHICH COMPRISES CONTACTING POLYSTYRENE WITH A DISPERSION OF ZINC STEARATE IN WATER CONTAINING AT LEAST ONE MONOESTER OF A POLYETHYLENE GLYCOL SELECTED FROM THE GROUP CONSISTING OF MONOSTEARATES OF POLYETHYLENE GLYCOLS HAVING A MOLECULAR WEIGHT BETWEEN 400 AND 1500, MONOOLEATES OF POLYETHYLENE GLYCOLS HAVING A MOLECULAR WEIGHT BETWEEN 400 AND 6000 AND MONOLAURATES OF POLYETHYLENE GLYCOLS HAVING A MOLECULAR WEIGHT BETWEEN 400 AND 4000, SAID DISPERSION CONTAINING THE INGREDIENTS IN PROPORTIONS CORRESPONDING TO FROM 1 TO 10 PARTS BY WEIGHT OF THE ZINC STEARATE AND FROM 1 TO 10 PARTS OF THE MONOESTER AND IN A CONCENTRATION OF FROM 2 TO 20 PERCENT BY WEIGHT OF THE SUM OF THE WEIGHTS OF THE ZINC STEARATE AND THE MONOESTER, BASED ON THE TOTAL WEIGHT OF THE DISPERSION, SAID DISPERSION BEING EMPLOYED IN AMOUNTS CORRESPONDING TO FROM 300 TO 4,000 PARTS BY WEIGHT OF THE SUM OF THE WEIGHTS OF THE ZINC STEARATE AND THE POLYETHYLEN GLYCOL MONOESTER PER MILLION PARTS BY WEIGHT OF THE POLYSTYRENE AND DRYING THE POLYSTYRENE.
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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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |