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US3726907A Expired / Lapsed US ⏱️ 0.0 years remaining

Reactive polyfunctional silanes

Assignee: JP Stevens and Co Inc
•
Filing: 1970-07-13
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Granted: 1973-04-10
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Expires: 1990-07-13
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Abstract

Abstract This invention relates to novel silyl ureas useful as finishing agents. These compounds are of the structure: WHEREIN A is arylene, and WHEREIN R is a divalent organic radical selected from the group consisting of: A. CHAINS OF LINEAR POLYMERS TERMINATED ON BOTH ENDS BY ARYLENECARBAMOYL RADICALS OF THE STRUCTURE WHEREIN A is arylene, and B. HYDROCARBON RADICALS, WHEREIN Q is a silyalkyl radical having affixed to the silicon atom three substituents selected from the group consisting of alkyl, alkoxy, and aryloxy at least one substituent of which is selected from the group consisting of alkoxy and aryloxy, with the proviso that said alkyl moiety of the silyalkyl can be interrupted by ether oxygen (-O-), and imino groups WHEREIN R'' is selected from the group consisting of hydrogen, aryl and alkyl.

Inventors

  • 👤 G Tesoro
  • 👤 W Lee

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 14:06
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/50; D06M13/51; D06M13/513; C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/67; C08G18/69

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 28 words
The silyl urea of claim 1 wherein Z is a polyoxyalkylene (-CpH2pO-)n wherein n ranges between 3 and 6 inclusive, and p ranges between 2 and 200 inclusive.
Claim 2
Dependent Claim 15 words
The silyl ureas of claim 1 wherein Z is the chain of a linear polyester:
Claim 3
Dependent Claim 32 words
The silyl ureas of claim 1 wherein Z is the oxygen-terminated chain of a polymer, -CH2CH CHCH2- O wherein the average value of u ranges from about 6 to about 100. 5.

References Cited (Backward Citations)

US3576033A Cited
US3657303A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-04-09 1976-10-09 1977-04-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-09 1980-10-09 1981-04-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-09 1984-10-09 1985-04-10 $7700.00 Window Closed / Lapsed

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