US3332866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for electrodepositing oxidized polyethylene
Assignee: WR Grace and Co
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Filing: 1964-03-12
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Granted: 1967-07-25
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Expires: 1984-03-12
Abstract
No abstract record available.
Inventors
- 👤 Walter R Wszolek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:43
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4407
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
THE PROCESS OF PREPARING A COATING OF OXIDIZED POLYETHYLENE ON AN ELECTRICALLY CONDUCTIVE SURFACE WHICH COMPRISES DIPPING ELECTRODES INTO AN AQUEOUS EMULSION COMPOSITION COMPRISING OXIDIZING POLYETHYLENE PREPARED FROM LINEAR POLYETHYLENE HAVING A DENSITY OF 0.94 TO 0.98, A MELTING POINT OF 128-138*C. AND A MELT INDEX OF LESS THAN 0.01, SAID OXIDIZED POLYETHYLENE CONTAINING 0.20 TO 1.0 MILLIEQUIVALENTS CARBOXYL PER GRAM OF OXIDIZED POLYETHYLENE, WITH A WATER: OXIDIZED POLYETHYLENE WEIGHT RATIO OF 80 TO 2000: 100 EMULSIFYING AGENT IN AN AMOUNT TO PROVIDE 1 TO 40 PARTS EMULISFYING AGENT PER PART OF SAID OXIDIZED POLYETHYLENE BY WEIGHT AND SUFFICIENT BASE TO NEUTRALIZE THE ACID GROUPS IN SAID EMULSION; ATTACHING BETWEEN SAID ELECTRODES A DIRECT CURRENT VOLTAGE SOURCE OF FROM 5 TO 150 VOLTS PROVIDING 3-25 AMPERES OF CURRENT FOR 2 TO 150 MINUTES; THEREBY COATING ONE OF SAID ELECTRODES WITH OXIDIZED POLYETHYLENE: REMOVING SAID COATED ELECTRODE FROM THE SAID EMULSION; DRYING SAID ELECTRODE; THEN SINTERING SAID ELECTRODE.
Claim 2
Dependent Claim
157 words
THE PROCESS OF PREPARING A COATING OF OXIDIZED POLYETHYLENE ON AN ELECTRICALLY CONDUCTIVE SURFACE WHICH COMPRISES DIPPING ELECTRODES INTO AN AQUEOUS EMULSION COMPOSITION COMPRISING OXIDIZING POLYETHYLENE PREPARED FROM LINEAR POLYETHYLENE HAVING A DENSITY OF 0.94 TO 0.98, A MELTING POINT OF 128-138*C. AND A MELT INDEX OF LESS THAN 0.01, SAID OXIDIZED POLYETHYLENE CONTAINING 0.20 TO 1.0 MILLIEQUIVALENTS CARBOXYL PER GRAM OF OXIDIZED POLYETHYLENE, WITH A WATER: OXIDIZED POLYETHYLENE WEIGHT RATIO OF 80 TO 2000: 100 EMULSIFYING AGENT IN AN AMOUNT TO PROVIDE 1 TO 40 PARTS EMULISFYING AGENT PER PART OF SAID OXIDIZED POLYETHYLENE BY WEIGHT AND SUFFICIENT BASE TO NEUTRALIZE THE ACID GROUPS IN SAID EMULSION; ATTACHING BETWEEN SAID ELECTRODES A DIRECT CURRENT VOLTAGE SOURCE OF FROM 5 TO 150 VOLTS PROVIDING 3-25 AMPERES OF CURRENT FOR 2 TO 150 MINUTES; THEREBY COATING ONE OF SAID ELECTRODES WITH OXIDIZED POLYETHYLENE: REMOVING SAID COATED ELECTRODE FROM THE SAID EMULSION; DRYING SAID ELECTRODE; THEN SINTERING SAID ELECTRODE.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |