US3085926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydropyrolysis of woody materials to form thermosetting compounds
Assignee: Individual
•
Filing: 1959-09-14
•
Granted: 1963-04-16
•
Expires: 1979-09-14
Abstract
No abstract record available.
Inventors
- 👤 Francis H Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:14
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A PROCESS FOR PRODUCING COMPOUNDS, THERMOSETTING UNDER HEAT AND PRESSURE COMPRISING OBTAINING LIGNOCELLULOSE MATERIAL IN CHIP OR PARTICLE FORM, ESTABLISHING IN THE CHIPS REAGENTS WHICH, UNDER REACTION CONDITIONS, WILL YIELD 0.3 PERCENT (BASED ON DRY WOOD) OF AN ELECTROLYTE AT LEAST .01 IONIZED AT 0.1 N CONCENTRATION, SUBJECTING THE MOIST WOOD CHIPS TO A HYDROPYROLYSIS REACTTION, IN THE ABSENCE OF ADDED LIQUID BY CONTACTING THE CHIPS WITH STEAM AT PRESSURES OF 600 TO 1260 P.S.I. AND THE CORRESPONDING TEMPERATURES FOR TIMES OF 10 MINUTES TO 20 SECONDS, ABRUPTLY TERMINATING THE REACTION BY REDUCING THE PRESSURE AND TEMPERATURE, WASHING THE PRODUCT TO REMOVE SOLBULE SUGSTANCES AND BLENDING THE REACTION PRODUCT WITH AT LEAST 2 PERCENT OF A FIRST-STAGE THERMOSETTING PHENOLIC RESIN, WHILE MAINTAINING AT LEAST 15 PERCENT WATER CONTENT IN THE REACTION PRODUCT FROM ITS DISCHARGE FROM THE REACTION CHAMBER UNTIL ITS BLENDING WITH THE PHENOLIC RESIN.
Claim 2
Dependent Claim
146 words
A PROCESS FOR PRODUCING COMPOUNDS, THERMOSETTING UNDER HEAT AND PRESSURE COMPRISING OBTAINING LIGNOCELLULOSE MATERIAL IN CHIP OR PARTICLE FORM, ESTABLISHING IN THE CHIPS REAGENTS WHICH, UNDER REACTION CONDITIONS, WILL YIELD 0.3 PERCENT (BASED ON DRY WOOD) OF AN ELECTROLYTE AT LEAST .01 IONIZED AT 0.1 N CONCENTRATION, SUBJECTING THE MOIST WOOD CHIPS TO A HYDROPYROLYSIS REACTTION, IN THE ABSENCE OF ADDED LIQUID BY CONTACTING THE CHIPS WITH STEAM AT PRESSURES OF 600 TO 1260 P.S.I. AND THE CORRESPONDING TEMPERATURES FOR TIMES OF 10 MINUTES TO 20 SECONDS, ABRUPTLY TERMINATING THE REACTION BY REDUCING THE PRESSURE AND TEMPERATURE, WASHING THE PRODUCT TO REMOVE SOLBULE SUGSTANCES AND BLENDING THE REACTION PRODUCT WITH AT LEAST 2 PERCENT OF A FIRST-STAGE THERMOSETTING PHENOLIC RESIN, WHILE MAINTAINING AT LEAST 15 PERCENT WATER CONTENT IN THE REACTION PRODUCT FROM ITS DISCHARGE FROM THE REACTION CHAMBER UNTIL ITS BLENDING WITH THE PHENOLIC RESIN.
References Cited (Backward Citations)
US2036156A
Cited
US2080078A
Cited
US2224135A
Cited
US2234188A
Cited
US2516847A
Cited
US2645577A
Cited
US2643186A
Cited
US2964518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |