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US2979528A Expired / Lapsed US ⏱️ 0.0 years remaining

Nitrogen-containing polyoxyalkylene detergent compositions

Assignee: Wyandotte Chemicals Corp
•
Filing: 1957-12-30
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Granted: 1961-04-11
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Expires: 1977-12-30
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Abstract

No abstract record available.

Inventors

  • 👤 Lester G Lundsted

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 02:26
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0413; C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C11; C11D; C11D1/00; C11D1/38; C11D1/42; C11D1/44; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 150 words
A SURFACE ACTIVE MIXTURE OF CONJUGATED POLYOXYALKYLENE COMPOUNDS CONSISTING OF OXYPROPYLENE GROUPS, OXYETHYLENE GROUPS AND THE NUCLEUS OF A NITROGEN-CONTAINING REACTIVE HYDROGEN COMPOUND HAVING NOT NORE THAN 6 CARBON ATOMS PER MOLECULE AND BEING SELECTED FROM THE GROUP CONSISTING OF AMMONIA, PRIMARY ALKYL AMINES, ALKYLENE POLYAMINES, ALKANOLAMINES, PIPERAZINE AND CARBON-SUBSTITUTED ALKYLPIPERAZINES, HYDROXYLAMINE AND AMINOPHENOL, THE STRUCTURE OF THE COMPOUNDS BEING SUCH THAT ALL OF THE OXYPROPYLENE GROUPS ARE PRESENT IN OXYPROPYLENE CHAINS THAT ARE ATTACHED TO THE REACTIVE HYDROGEN COMPOUND AT THE SITES OF THE REACTIVE HYDROGEN ATOMS, AND ALL OF THE OXYETHYLENE GROUPS ARE PRESENT IN OXYETHYLENE CHAINS THAT ARE ATTACHED TO THE ENDS OF THE OXYPROPYLENE CHAINS, THE AVERAGE MOLECULAR WEIGHT OF THE OXYPROPYLENE CHAINS BEING AT LEAST ABOUT 900 AND TO ABOUT 25,000, AND THE OXYETHYLENE GROUPS BEING PRESENT IN AN AMOUNT SO AS TO CONSTITUTE FROM 20 TO 90 WEIGHT PERCENT OF THE MIXTURE OF COMPOUNDS.
Claim 2
Dependent Claim 150 words
A SURFACE ACTIVE MIXTURE OF CONJUGATED POLYOXYALKYLENE COMPOUNDS CONSISTING OF OXYPROPYLENE GROUPS, OXYETHYLENE GROUPS AND THE NUCLEUS OF A NITROGEN-CONTAINING REACTIVE HYDROGEN COMPOUND HAVING NOT NORE THAN 6 CARBON ATOMS PER MOLECULE AND BEING SELECTED FROM THE GROUP CONSISTING OF AMMONIA, PRIMARY ALKYL AMINES, ALKYLENE POLYAMINES, ALKANOLAMINES, PIPERAZINE AND CARBON-SUBSTITUTED ALKYLPIPERAZINES, HYDROXYLAMINE AND AMINOPHENOL, THE STRUCTURE OF THE COMPOUNDS BEING SUCH THAT ALL OF THE OXYPROPYLENE GROUPS ARE PRESENT IN OXYPROPYLENE CHAINS THAT ARE ATTACHED TO THE REACTIVE HYDROGEN COMPOUND AT THE SITES OF THE REACTIVE HYDROGEN ATOMS, AND ALL OF THE OXYETHYLENE GROUPS ARE PRESENT IN OXYETHYLENE CHAINS THAT ARE ATTACHED TO THE ENDS OF THE OXYPROPYLENE CHAINS, THE AVERAGE MOLECULAR WEIGHT OF THE OXYPROPYLENE CHAINS BEING AT LEAST ABOUT 900 AND TO ABOUT 25,000, AND THE OXYETHYLENE GROUPS BEING PRESENT IN AN AMOUNT SO AS TO CONSTITUTE FROM 20 TO 90 WEIGHT PERCENT OF THE MIXTURE OF COMPOUNDS.
Claim 3
Dependent Claim 21 words
A SURFACE ACTIVE MIXTURE OF CONJUGATED POLYOXYALKYLENE COMPOUNDS ACCORDING TO CLAIM 1 WHEREIN SAID REACTIVE HYDROGEN COMPOUND IS AN ALKYLENE POLYAMINE.

References Cited (Backward Citations)

GB297484A Cited
US2174762A Cited
US2220147A Cited
US2552530A Cited
US2552534A Cited
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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) 1964-04-10 1964-10-10 1965-04-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1968-04-10 1968-10-10 1969-04-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1972-04-10 1972-10-10 1973-04-11 $7700.00 Window Closed / Lapsed

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