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US3779967A Expired / Lapsed US ⏱️ 0.0 years remaining

Storage stable concentrated aqueous emulsions prepared from a mixture of methylhydrogen siloxane and methyl polysiloxane,an aminated polymer and an epoxy compound

Assignee: Rhone Poulenc SA
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Filing: 1970-09-28
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Granted: 1973-12-18
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Expires: 1990-09-28
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Abstract

Abstract STORAGE-STABLE AQUEOUS EMULSIONS CONTAINING LESS THAN 80% WATER CONTAIN A METHYLHYDROGENOPOLYSILOXANE/ METHYLPOLYSILOXANE MIXTURE, AN EMULSIFIER AND 1.5 TO 30%, BASED ON THE WEIGHT OF POLYSILOXANE, OF A CURABLE REACTION PRODUCT OF (A) AN AMINATED POLYMER HAVING REPEAT UNITS -NR-(CNH2NNR)X-A- WHERE R IS H OR C1-C4 ALKYL, N>2,X=1-7 AND A=-CO-, -CS-, -CO-Q- OR -CO-Q''-COWHERE Q=C2-C6 ALKYLENE AND Q''= A DIVALENT RADICAL; AND (B) A COMPOUND HAVING AT LEAST ONE HALOHYDRIN OR EPIHALOHYDRIN GROUP OR AT LEAST TWO ETHYLENE OXIDE GROUPS. DILUTION OF THE EMULSION AND ADDITION OF CONVENTION CATALYSTS GIVES A BATH SUITABLE FOR WATERPROOFING TEXTILES IN A MANNER RESISTANT TO REPEATED RUBBING AND WASHING.

Inventors

  • 👤 M Camp

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 20:53
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/6436; C; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/045; C08G77/12; C08G77/14; C08G77/16; C08G77/18; C08L77/00; C08L77/06

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) 1976-12-17 1977-06-18 1977-12-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-17 1981-06-18 1981-12-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-17 1985-06-18 1985-12-18 $7700.00 Window Closed / Lapsed

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