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US3594447A Expired / Lapsed US ⏱️ 0.0 years remaining

Polyamides and polyesters containing isophthalate amides of dialkanoyl polyalkylene polyamines as antisoiling agents

Assignee: Honeywell International Inc
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Filing: 1968-10-31
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Granted: 1971-07-20
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Expires: 1988-10-31
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Abstract

Abstract A FILAMENT, HAVING IMPROVED RESISTANCE TO SOILING, OF A SYNTHETIC POLYMER HAVING MIXED THERETHROUGH ABOUT 0.02 TO 5 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE SYNTHETIC POLYMER, OF AN AMIDE HAVING THE GENERAL FORMULA; BIS-((CH3-R-CO-NH-(CH2)X-)2-N-CO-(CH2)N-)BENZENE WHEREIN THE HEXAGON REPRESENTS THE BENZENE NUCLEUS, R IS A DIVALENT RADICAL CONTAINING UP TO ABOUT 30, PREFERABLY ABOUT 3 TO 18, CARBON ATOMS WHICH CAN BE LINEAR OR BRANCHED ALIPHATIC, N IS AN INTEGER FROM 0 TO ABOUT 6 BUT PREFERABLY IS 0, X IS AN INTEGER FROM 1 TO ABOUT 6 BUT PREFERABLY IS ABOUT 2 TO 3, AND THE -(CH2)N-CO- RADICALS CONNECTED TO THE BENZENE NUCLEUS ARE RELATIVELY DISPOSED IN THE ORTHO, META, OR PARA POSITIONS BUT PREFERABLY IN THE META POSITION.

Inventors

  • 👤 Robert C Wincklhofer
  • 👤 Lamberto Crescentini

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-10 02:28
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/88; D01F6/90; C; C08; C08K; C08K5/00; C08K5/16; C08K5/20; D01F6/92

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) 1974-07-19 1975-01-18 1975-07-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-07-19 1979-01-18 1979-07-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-07-19 1983-01-18 1983-07-20 $7700.00 Window Closed / Lapsed

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