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US3763084A Expired / Lapsed US ⏱️ 0.0 years remaining

Poly (diacetone acrylamide) modified calcium carbonate

Assignee: NARCO INVESTORS Inc
•
Filing: 1972-01-14
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Granted: 1973-10-02
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Expires: 1992-01-14
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Abstract

Abstract A PROCESS HAS BEEN PROVIDED FOR POLYMERIZING DIACETONE ACRYLAMIDE MONOMER AND A COMONOMER SYSTEM BASED ON DIACETONE ACRYHLAMIDE MONOMER ONTO A PARTICULATE CALCIUM CARBONATE; THIS PROCESS MAY BE CARRIED OUT IN AN AQUEOUS PHASE; THE MONOMERS OR COMONOMERS ARE POLYMERIZED VIA FREE RADICAL POLYMERIZATION ONTO THE SURFACE OF CALCIUM CARBONATE; WHEN CALCIUM CARBONATE IS MODIFIED WITH DIACETONE ACRYLAMIDE HOMOPOLYMER, IT POSSESSES IMPROVED PROPERTIES; BY EMPLOYING DIACETONE ACRYLAMIDE AS ONE OF THE MONOMER PRECURSORS IN A COMONOMER SYSTEM BUT BY VARYING THE AMOUNT OF COMONOMER, MODIFIED CALCIUM CARBONATE IS OBTAINED WHICH POSSESSES ESPECIALLY ADVANTAGEOUS PROPERTIES; PRODUCTS PREPARED BY THIS PROCESS ARE WITHIN THE SCOPE OF THE INVENTION AS ARE THE USES OF THESE SURFACE MODIFIED PRODUCTS FOR PURPOSES AS ADJUVANTS IN POLYMERS, E.G. POLY(ESTER), POLY(VINYL CHLORIDE) AND IN OLEAGINOUS, ALKYD, ADHESIVE, PAINT, PUTTY, CAULKING AND GROUTING COMPOSITION FORMULATIONS, TO NAME A FEW.

Inventors

  • 👤 G Grudus
  • 👤 S Gebura

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 18:20
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/02; C09C1/021; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/58; C08K; C08K9/00; C08K9/08; C08L; C08L67/00; C08L67/06; C01; C01P; C01P2002/00; C01P2002/02; C01P2004/00; C01P2004/30; C01P2004/60; C01P2004/61; C01P2004/80; C01P2006/00; C01P2006/60

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) 1976-10-01 1977-04-02 1977-10-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-10-01 1981-04-02 1981-10-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-10-01 1985-04-02 1985-10-02 $7700.00 Window Closed / Lapsed

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