US2947715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-step creaming process for the preparation of emulsion latices from hydrocarbon polymer
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1955-07-13
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Granted: 1960-08-02
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Expires: 1975-07-13
Abstract
No abstract record available.
Inventors
- 👤 Charlet Elphege Maxime
- 👤 Small Augustus Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:54
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/07; Y; Y10; Y10S; Y10S260/00; Y10S260/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
PROCESS FOR PREPARING HYDROCARBON POLYMER LATICES WHICH COMPRISES DISSOLVING SAID POLYMER IN A HYDROCARBON SOLVENT, EMULSFYING THE DISSOLVED POLYMER WITH WATER IN THE PRESENCE OF ABOUT 10 TO 20 WT. PERCENT BASED ON POLYMER OF EMULSIFIER, ADDING A CREAMING AGENT TO THE RESULTING EMULSION WHEREBY AN UPPER LATEX LAYER CONTAINING THE POLYMER, SOLVENT AND SOME WATER AND A LOWER AQUEOUS LAYER ARE FORMED, SEPARATING THE LATEX LAYER FROM THE AQUEOUS LAYER, STRIPPING THE SOLVENT FROM THE LATEX LAYER, CREAMING THE SOLVENT-FREE LATEX LAYER WHEREBY AN UPPER LATEX LAYER AND A LOWER AQUEOUS LAYER ARE FORMED, SEPARATING THE LATEX LAYER FROM THE AQUEOUS LAYER AND RECOVERING A LATEX CONTAINING ABOUT 40 TO 50 WT. PERCENT SOLIDS.
Claim 2
Dependent Claim
115 words
PROCESS FOR PREPARING HYDROCARBON POLYMER LATICES WHICH COMPRISES DISSOLVING SAID POLYMER IN A HYDROCARBON SOLVENT, EMULSFYING THE DISSOLVED POLYMER WITH WATER IN THE PRESENCE OF ABOUT 10 TO 20 WT. PERCENT BASED ON POLYMER OF EMULSIFIER, ADDING A CREAMING AGENT TO THE RESULTING EMULSION WHEREBY AN UPPER LATEX LAYER CONTAINING THE POLYMER, SOLVENT AND SOME WATER AND A LOWER AQUEOUS LAYER ARE FORMED, SEPARATING THE LATEX LAYER FROM THE AQUEOUS LAYER, STRIPPING THE SOLVENT FROM THE LATEX LAYER, CREAMING THE SOLVENT-FREE LATEX LAYER WHEREBY AN UPPER LATEX LAYER AND A LOWER AQUEOUS LAYER ARE FORMED, SEPARATING THE LATEX LAYER FROM THE AQUEOUS LAYER AND RECOVERING A LATEX CONTAINING ABOUT 40 TO 50 WT. PERCENT SOLIDS.
References Cited (Backward Citations)
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Cited
US2386764A
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US2386931A
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US2592526A
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US2595797A
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Cited
US2721145A
Cited
US2769712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |