US2837502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable high-solids latices
Assignee: Phillips Petroleum Co
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Filing: 1953-04-24
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Granted: 1958-06-03
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Expires: 1973-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robert S Hanmer
- 👤 James H Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:02
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F236/00; C08F236/02; C08F236/04; C08F236/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN THE EMULSION POLYMERIZATION OF A MONOMERIC MATERIAL COMPRISING AN UNSATURATED ORGANIC COMPOUND CONTAINING AN ACTIVE CH2=C< GROUP AND POLYMERIZABLE IN AN QUEOUS EMULSION, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID POLYMERIZATION IN AN AQUEOUS PHASE RANGING FROM 50 TO 160 PARTS BY WEIGHT PER 100 PARTS OF MONOMER AT A TEMPERATURE BELOW 0*C. IN THE PRESENCE OF AN ALCOHOL MIXTURE IN AN AMOUNT SUFFICIENT TO PREVENT FREEZING OF SAID AQUEOUS PHASE AND CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF METHANOL AND A MINOR AMOUNT OF AT LEAST ONE POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCEROL, ETHYLENE GLYCOL, AND ERYTHRITOL.
Claim 2
Dependent Claim
101 words
IN THE EMULSION POLYMERIZATION OF A MONOMERIC MATERIAL COMPRISING AN UNSATURATED ORGANIC COMPOUND CONTAINING AN ACTIVE CH2=C< GROUP AND POLYMERIZABLE IN AN QUEOUS EMULSION, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID POLYMERIZATION IN AN AQUEOUS PHASE RANGING FROM 50 TO 160 PARTS BY WEIGHT PER 100 PARTS OF MONOMER AT A TEMPERATURE BELOW 0*C. IN THE PRESENCE OF AN ALCOHOL MIXTURE IN AN AMOUNT SUFFICIENT TO PREVENT FREEZING OF SAID AQUEOUS PHASE AND CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF METHANOL AND A MINOR AMOUNT OF AT LEAST ONE POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCEROL, ETHYLENE GLYCOL, AND ERYTHRITOL.
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) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |