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US3661780A Expired / Lapsed US ⏱️ 0.0 years remaining

Hydrocarbon composition containing polyalkyl-substituted tetrahydro-naphthalenes and di-n-c10-c15-alkaryl hydrocarbons and process for preparing same

Assignee: Vista Chemical Co
•
Filing: 1970-10-26
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Granted: 1972-05-09
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Expires: 1990-10-26
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Abstract

Abstract HYDROCARBON COMPOSITION CONTAINING AT LEAST 20 VOLUME PERCENT POLYALKYL-SUBSTITUTED TETRAHYDRONAPHTHALENES AND FROM 25 TO 60 VOLUME PERCENT DI-N-C10-C15-ALKARYLS, EACH OF SAID TETRAHYDRONAPHTHALENES AND SAID DI-N-C10-C15-ALKARYLS CONTAINING FROM 26 TO 36 CARBON ATOMS. PROCESS FOR PREPARING SAID HYDROCARBON COMPOSITION, WHEREIN THE PROCESS COMPRISES (1) CONTACTING AN ADMIXTURE OF MONON-C10-C15-ALKARYLS AND ALKYL-SUBSTITUTED TETRAHYDRONAPHTHALENES WITH A FRIEDEL-CRAFTS CATALYST, AND (2) FRACTIONALLY DISTILLING THE REACTION MASS TO RECOVER THE DESIRED HYDROCARBON COMPOSITION. THE HYDROCARBON COMPOSITION IS SUITABLE FOR USE BOTH AS A FEEDSTOCK FOR PREPARING OIL-SOLUBLE SLUFONIC ACIDS AND AS A LUBRICANT, PARTICULARLY A LUBRICANT FOR LOW-TEMPERATURE AMBIENT CONDITIONS.

Inventors

  • 👤 George C Feighner
  • 👤 Oliver C Kerfoot
  • 👤 Delmar D Krehbiel
  • 👤 Gene E Nicks

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 02:39
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07C; C07C13/00; C07C13/28; C07C13/32; C07C13/47; C07C13/48; C07C15/00; C07C15/02; C07C15/107; C07C6/00; C07C6/08; C07C6/12; C07C6/126; C10M2203/00; C10M2203/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/08; C10N2040/20; C10N2040/25; C10N2040/252; C10N2040/253

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-05-09 1975-11-08 1976-05-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-05-09 1979-11-08 1980-05-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-05-09 1983-11-08 1984-05-09 $7700.00 Window Closed / Lapsed

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