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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
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Abstract

No abstract record available.

Inventors

  • 👤 Francis H Snyder

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 11:17
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
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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

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