← Back to Patent Explorer
US2864871A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of producing dinitro-tetra alkyl benzenes

Assignee: Goodrich Corp
•
Filing: 1956-07-20
•
Granted: 1958-12-16
•
Expires: 1976-07-20
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Marion G Morningstar

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 13:08
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/08

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 193 words
THE METHOD OF PRODUCING A 1,4-DINITRO-2,3,5,6-TETRAALKYL BENZENE COMPROSING INITIALLY COOLING A BODY OF STRONG NITRIC ACID HAVING SPECIFIC GRAVITY OF FROM ABOUT 1.41 GO ABOUT 1.51 TO A SUBSTANTIALLY UNIFORM TEMPRETURE THROUGHOUT BY VIGOROUSLY AGIATING SAID BODY OF NITRIC ACID IN CONTACT WITH COOLING ELEMENTS UNTIL SAID TEMPERATURE IS LOWERED TO FORM ABOUT 5 TO ABOUT 15*C. THEN ADDING GRADUALLY, LITTLE BY LITTLE, TO THE COOLED BODY OF A NITRIC ACID WHILE CONTINUING THE STRRING AND THE COOLING A POWDERED REACTANT CONSISTING ESSENTIALLY OF 2,3,5,6-TETRA ALKYL BENZENE, WHEREIN EACH ALKYL GROUP CONTIANS FROM 1 TO 6 CARBON ATOMS, CONTROLLING THE RATE OF SAID ADDITION OF THE POWDERED REACTANT, TO, AND THE RATE OF SAID ADDITION THE RESULTING NITRIC ACID MIXTURE SO AS TO MAINTAIN THE SAID MIXTURE AT A SUBSTANTIALLY UNIFORM TEPERATURE SUFFICIENTLY LOW TO PREVENT OXIDIZING FUMES FROM BEING FORMED IN THE SAID MIXTURE, CONTINUING THE SLID ADDITION AND COOLING UNTIL THE REACTION APPROACHES COMPLETIONM THEREAFTER ADMIXING EITH STIRRING THE RESULTING MIXTURE WITH COLD WATER TO PRECIPITATE OUT 1.4-DINITRO-2.3,5.6-TETRE ALKYL BENZENE, AND FILTERING, WASHING, NEUTRALIZING AND DRYING THE CRYSTALLINE SOLIDS TO SECURE 1,4 DINITRO-2.3.5,6-TETREALKYL BENZENE OF HIGH QUALITY AND OF HIGH YIELD.
Claim 2
Independent Claim 193 words
THE METHOD OF PRODUCING A 1,4-DINITRO-2,3,5,6-TETRAALKYL BENZENE COMPROSING INITIALLY COOLING A BODY OF STRONG NITRIC ACID HAVING SPECIFIC GRAVITY OF FROM ABOUT 1.41 GO ABOUT 1.51 TO A SUBSTANTIALLY UNIFORM TEMPRETURE THROUGHOUT BY VIGOROUSLY AGIATING SAID BODY OF NITRIC ACID IN CONTACT WITH COOLING ELEMENTS UNTIL SAID TEMPERATURE IS LOWERED TO FORM ABOUT 5 TO ABOUT 15*C. THEN ADDING GRADUALLY, LITTLE BY LITTLE, TO THE COOLED BODY OF A NITRIC ACID WHILE CONTINUING THE STRRING AND THE COOLING A POWDERED REACTANT CONSISTING ESSENTIALLY OF 2,3,5,6-TETRA ALKYL BENZENE, WHEREIN EACH ALKYL GROUP CONTIANS FROM 1 TO 6 CARBON ATOMS, CONTROLLING THE RATE OF SAID ADDITION OF THE POWDERED REACTANT, TO, AND THE RATE OF SAID ADDITION THE RESULTING NITRIC ACID MIXTURE SO AS TO MAINTAIN THE SAID MIXTURE AT A SUBSTANTIALLY UNIFORM TEPERATURE SUFFICIENTLY LOW TO PREVENT OXIDIZING FUMES FROM BEING FORMED IN THE SAID MIXTURE, CONTINUING THE SLID ADDITION AND COOLING UNTIL THE REACTION APPROACHES COMPLETIONM THEREAFTER ADMIXING EITH STIRRING THE RESULTING MIXTURE WITH COLD WATER TO PRECIPITATE OUT 1.4-DINITRO-2.3,5.6-TETRE ALKYL BENZENE, AND FILTERING, WASHING, NEUTRALIZING AND DRYING THE CRYSTALLINE SOLIDS TO SECURE 1,4 DINITRO-2.3.5,6-TETREALKYL BENZENE OF HIGH QUALITY AND OF HIGH YIELD.

References Cited (Backward Citations)

US967337A Cited
US2135013A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1961-12-15 1962-06-16 1962-12-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1965-12-15 1966-06-16 1966-12-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1969-12-15 1970-06-16 1970-12-16 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag