US3130181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of colloidal particles of polycarbonamides
Assignee: Honeywell International Inc
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Filing: 1959-04-10
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Granted: 1964-04-21
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Expires: 1979-04-10
Abstract
No abstract record available.
Inventors
- 👤 Frederic L Sievenpiper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:28
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J2377/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
THE PROCESS FOR PREPARING FINELY DIVIDED SYNTHETIC LINEAR POLYCARBONAMIDES OF COLLOIDAL SIZE, WHICH COMPRISES HEATING IN A NON-OXIDIZING ATMOSPHERE A MIXTURE COMPRISING A SYNTHETIC LINEAR POLYCARBONAMIDE, AT LEAST 4 PARTS OF WATER BASED ON THE WEIGHT OF THE POLYCARBONAMIDE, AND A KETONE FROM THE GROUP CONSISTING OF ALIPHATIC KETONES, CYCLOALIPHATIC KETONES, AND MIXTURES OF SUCH KETONES, TO A TEMPERATURE ABOVE THAT AT WHICH THE POLYCARBONAMIDE BECOMES MOLTEN BUT BELOW THAT AT WHICH SUBSTANTIAL DECOMPOSITION OF THE POLYCARBONAMIDE TAKES PLACE, WHILE AGITATING THE MIXTURE, THE AMOUNT OF SAID KETONE PRESENT IN THE MIXTURE BEING AT LEAST 30% BY VOLUME BASED ON THE VOLUME OF WATER PRESENT AND SUCH AS TO RESULT IN THE FOMATION OF AN EMULSION OF THE MOLTEN POLYCARBONAMIDE IN WATER AND KETONE WHEN THE MIXTURE IS SUBJECTED TO SAID AGITATION, AND THEREAFTER COOLING THE SAID EMULSION WHILE CONTINUING THE AGITATION TO FORM SAID FINELY DIVIDED PARTICLES OF THE POLYCARBONAMIDE.
Claim 2
Dependent Claim
151 words
THE PROCESS FOR PREPARING FINELY DIVIDED SYNTHETIC LINEAR POLYCARBONAMIDES OF COLLOIDAL SIZE, WHICH COMPRISES HEATING IN A NON-OXIDIZING ATMOSPHERE A MIXTURE COMPRISING A SYNTHETIC LINEAR POLYCARBONAMIDE, AT LEAST 4 PARTS OF WATER BASED ON THE WEIGHT OF THE POLYCARBONAMIDE, AND A KETONE FROM THE GROUP CONSISTING OF ALIPHATIC KETONES, CYCLOALIPHATIC KETONES, AND MIXTURES OF SUCH KETONES, TO A TEMPERATURE ABOVE THAT AT WHICH THE POLYCARBONAMIDE BECOMES MOLTEN BUT BELOW THAT AT WHICH SUBSTANTIAL DECOMPOSITION OF THE POLYCARBONAMIDE TAKES PLACE, WHILE AGITATING THE MIXTURE, THE AMOUNT OF SAID KETONE PRESENT IN THE MIXTURE BEING AT LEAST 30% BY VOLUME BASED ON THE VOLUME OF WATER PRESENT AND SUCH AS TO RESULT IN THE FOMATION OF AN EMULSION OF THE MOLTEN POLYCARBONAMIDE IN WATER AND KETONE WHEN THE MIXTURE IS SUBJECTED TO SAID AGITATION, AND THEREAFTER COOLING THE SAID EMULSION WHILE CONTINUING THE AGITATION TO FORM SAID FINELY DIVIDED PARTICLES OF THE POLYCARBONAMIDE.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |