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US3718663A Expired / Lapsed US ⏱️ 0.0 years remaining

Preparation of oil-soluble boron derivatives of an alkylene polyamine-urea or thiourea-succinic anhydride addition product

Assignee: Standard Oil Co
•
Filing: 1970-08-31
•
Granted: 1973-02-27
•
Expires: 1990-08-31
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Abstract

Abstract Complex substituted alkylene polyamines such as di(alkenylsuccinimide) of N1,N3 symmetrical bis(aminopolyazalkylene) ureas that react with boric acid in oil solution either with low boric acid utilization efficiency or react to form a hazy product whose haze cannot be removed by filtration are readily converted to the desired oil solution of boron and nitrogen containing products by first preparing an oil solution of super boron containing product of the complex substituted alkylene polyamine, combining the oil solution of super boron containing product with oil solution of the complex substituted alkylene polyamine and equilibrating the resulting mixture to a uniform boron to nitrogen content throughout.

Inventors

  • 👤 R Lee
  • 👤 E Piasek
  • 👤 R Karll

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 20:19
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/04; C07C275/06; C07C275/14; C07F; C07F5/00; C07F5/02; C07F5/022; C10; C10M; C10M133/00; C10M133/52; C10M133/56; C10M135/00; C10M135/12; C10M135/14; C10M135/16; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/086; C10M2215/10; C10M2215/102; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/064; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2227/00; C10M2227/06; C10M2227/061; C10N; C10N2010/00; C10N2010/04; C10N2010/06

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 19 words
The method of claim 1 wherein the boric acid is added as a slurry thereof in light mineral oil.
Claim 2
Dependent Claim 12 words
The method of claim 2 wherein equilibration is conducted at ambient temperature.
Claim 3
Dependent Claim 20 words
The method of claim 2 wherein equilibration is conducted at a temperature in the range of 120* to 250* F.

References Cited (Backward Citations)

US3036003A Cited
US3087936A Cited
US3539633A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-02-27 1976-08-28 1977-02-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-02-27 1980-08-28 1981-02-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-02-27 1984-08-28 1985-02-27 $7700.00 Window Closed / Lapsed

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