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US3594336A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for the preparation of aqueous polymerizate dispersions of unsaturated monomers

Assignee: Wacker Chemie AG
•
Filing: 1968-05-08
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Granted: 1971-07-20
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Expires: 1988-05-08
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Abstract

Abstract THE INVENTION RELATES TO A PROCESS FOR THE PREPARATION OF AQEOUS POLYMERIZATE DISPERSIONS WHICH COMPRISES THE STEPS OF EFFECTING A DISPERSION POLYMERIZATION OF FREERADICAL POLYMERIZABLE ORGANIC COMPOUNDS IN THE PRESENCE OF 0.6% TO 4% BY WEIGHT OF THE POLYMERIZATES OF NVINYLPYRROLIDONE, 0.1% TO 8% BY WEIGHT OF NON-IONIC EMULSIFIERS AND FROM 0% TO 4% BY WEIGHT OF ANIONIC EMULSIFIERS CHARACTERIZED IN THAT ABOUT 0.1% TO ABOUT 0.8% BY WEIGHT OF A WATER-SOLUBLE HYDROXYALKYL CELLULOSE IS ADDITIONALLY PRESENT IN THE POLYMERIZATION RECIPE, WHERE ALL THE ABOVE PERCENTAGES ARE PERCENTAGES BY WEIGHT WITH REFERENCE TO THE WEIGHT OF THE FREE-RADICAL POLYMERIZABLE ORGANIC COMPOUNDS PRESENT IN THE POLYMERIZATION RECIPE.

Inventors

  • 👤 Eduard Bergmeister
  • 👤 Hubert Wiest

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 10:57
CPC Classifications
C; C08; C08F; C08F271/00

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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