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US3798165A Expired / Lapsed US ⏱️ 0.0 years remaining

Lubricating oils containing high molecular weight mannich condensation products

Assignee: BP Corp North America Inc
•
Filing: 1969-02-10
•
Granted: 1974-03-19
•
Expires: 1989-02-10
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Abstract

Abstract OIL SOLUBLE HIGH MOLECULAR WEIGHT MANNICH CONDENSATION PRODUCTS FORMED BY REACTING (1) HIGH MOLECULAR WEIGHT ALKYL-SUBSTITUTED HYDROXY AROMATIC COMPOUNDS WHOSE ALKYL-SUBSTITUENT HAS A NUMBER AVERAGE MOLECULAR WEIGHT (MN) FROM ABOUT 600-1000,000, (2) A COMPOUND CONTAINING AT LEAST HN< GROUP, AND (3) AN ALDEHYDE IN THE RESPECTIVE MOLAR REACTANT RATIO OF 1:0.1-10:1.0-10, ARE HIGHLY EFFICIENT ASHLESS TYPE (METAL FREE) DISPERSANTDETERGENT LUBRICANT OIL ADDITION AGENTS. LUBRICATING OILS CONTAINING THESE COMPOSTIONS PROVIDE A HIGH DEGREE OF PROTECTION AGAINST THE DEPOSITION OF SLUDGE AND VARNISH AND CORROSION WHERE USED AS CRANKCASE LUBRICANTS. BISMANNICH PRODUCTS PREPARED BY CONDENSING (1) A 8502500 MN POLYALKYL-SUBSTITUTED PHENOL, (2) AN ALKYLENE POLYAMINE AND (3) FORMALDEHYDE IN THE RESPECTIVE MOLAR RATIO OF 2.0:1.5-2.1 ARE NOVEL PRODUCTS AND ARE ESPECIALLY EFFECTIVE FOR HIGH SEVERITY DETERGENT-DISPERSANT FUNCTION OVER THE EXTENDED OIL DRAIN RANGE OF CRANKCASE LUBRICANT OILS RECOMMENDED BY AUTOMOBILE MANUFACTURES.

Inventors

  • 👤 E Piasek
  • 👤 R Karll

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 20:32
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/16; C07; C07C; C07C275/00; C07C275/04; C07C275/06; C07C275/14; C07F; C07F5/00; C07F5/02; C07F5/022; C07F5/04; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C08F8/42; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/10; C10M2215/102; C10M2215/22; C10M2215/221; C10M2215/223; C10M2215/224; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/064; C10M2219/066; C10M2221/00; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2227/00; C10M2227/06; C10M2227/061; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2030/00; C10N2030/12; C10N2050/00; C10N2050/015; C10N2050/02; C10N2070/00; C10N2070/02

Claims Analysis

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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) 1977-03-18 1977-09-17 1978-03-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-03-18 1981-09-17 1982-03-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-03-18 1985-09-17 1986-03-19 $7700.00 Window Closed / Lapsed

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