US3379666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of stable copolymeric latices
Assignee: EIDP Inc
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Filing: 1964-01-02
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Granted: 1968-04-23
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Expires: 1984-01-02
Abstract
No abstract record available.
Inventors
- 👤 Becker Richard Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:13
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/07; C09; C09J; C09J123/00; C09J123/02; C09J123/16; C08J2323/00; C08J2323/02; C08J2323/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A METHOD OF PREPARING A STABLE LATEX OF A WATERINSOLUBLE, CHAIN-SATURATED HYDROCARBON COPOLYMER SELECTED FROM THE GROUP CONSISTING OF (1) ETHYLENE/1,4HEXADIENE COPOLYMERS, (2) ETHYLENE/PROPYLENE/1,4-HEXADIENE COPOLYMERS, AND (3) ETHYLENE/PROPYLENE/DICYCLOPENTADIENE COPOLYMERS, WHICH PROCESS COMPRISES (I) FORMING A STABLE OIL-IN-WATER EMULSION BY MIXING WITH HIGHSHEAR AGITATION AT A TEMPERATURE BETWEEN 15* AND 75*C. (A) AN INERT ORGANIC SOLVENT SOLUTION OF SAID COPOLYMER, SAID SOLUTION HAVING A BROOKFIELD VISCOSITY AT 25*C. BELOW ABOUT 75,000 CENTIPOISE, WITH (B) WATER CONTAINING A COLLOIDAL STABILIZER SELECTED FROM THE GROUP CONSISTING OF AMMONIUM CASEINATE, SODIUM AND AMMONIUM POLYACRYLATES, METHYL CELLULOSE, ALGINATES, STARCH AND POLYVINYL ALCOHOL, IN THE PRESENCE OF (C) AN EMULSIFYING AGENT IN AN AMOUNT OF FROM ABOUT 1 TO 10% BASED ON THE WEIGHT OF SAID COPOLYMER PRESENT, THE VOLUMETRIC RATIO OF (B) TO (A) RANGING FROM ABOUT 1:10 TO 4:10 AND WHEREIN AT LEAST A PART OF SAID WATER (B) IS INTRODUCED IN THE FORM OF AN AQUEOUS POLYCHLOROPRENE LATEX; AND (II) REMOVING THE SOLVENT FROM THE MIXTURE AT A TEMPERATURE BELOW ABOUT 75*C.
Claim 2
Independent Claim
169 words
A METHOD OF PREPARING A STABLE LATEX OF A WATERINSOLUBLE, CHAIN-SATURATED HYDROCARBON COPOLYMER SELECTED FROM THE GROUP CONSISTING OF (1) ETHYLENE/1,4HEXADIENE COPOLYMERS, (2) ETHYLENE/PROPYLENE/1,4-HEXADIENE COPOLYMERS, AND (3) ETHYLENE/PROPYLENE/DICYCLOPENTADIENE COPOLYMERS, WHICH PROCESS COMPRISES (I) FORMING A STABLE OIL-IN-WATER EMULSION BY MIXING WITH HIGHSHEAR AGITATION AT A TEMPERATURE BETWEEN 15* AND 75*C. (A) AN INERT ORGANIC SOLVENT SOLUTION OF SAID COPOLYMER, SAID SOLUTION HAVING A BROOKFIELD VISCOSITY AT 25*C. BELOW ABOUT 75,000 CENTIPOISE, WITH (B) WATER CONTAINING A COLLOIDAL STABILIZER SELECTED FROM THE GROUP CONSISTING OF AMMONIUM CASEINATE, SODIUM AND AMMONIUM POLYACRYLATES, METHYL CELLULOSE, ALGINATES, STARCH AND POLYVINYL ALCOHOL, IN THE PRESENCE OF (C) AN EMULSIFYING AGENT IN AN AMOUNT OF FROM ABOUT 1 TO 10% BASED ON THE WEIGHT OF SAID COPOLYMER PRESENT, THE VOLUMETRIC RATIO OF (B) TO (A) RANGING FROM ABOUT 1:10 TO 4:10 AND WHEREIN AT LEAST A PART OF SAID WATER (B) IS INTRODUCED IN THE FORM OF AN AQUEOUS POLYCHLOROPRENE LATEX; AND (II) REMOVING THE SOLVENT FROM THE MIXTURE AT A TEMPERATURE BELOW ABOUT 75*C.
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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |