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US3729437A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for the production of concentrated aqueous emulsions or insoluble liquid,pasty or solid organic or inorganic substances

Assignee: Chemische Fabrik Pfersee GmbH
•
Filing: 1970-12-21
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Granted: 1973-04-24
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Expires: 1990-12-21
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Abstract

Abstract CONCENTRATED AQUEOUS EMULSIONS OR DISPERSIONS OD WTER-INSOLUBLE LIQUID, PASTRY OR SOLID ORGANIC OR INORGANIC SUBSTANCES ARE PREPARED WITH EMULSIFIERS WHICH ARE PRODUCED BY THE REACTION OF: (A) ABOUT 1 MOLE OF UREA, GUANIDINE, DERIVATIVES OF GUANIDINE OR THE PRODUCTS OF THE DECOMPOSITION OF GUANIDINE DERIVATIVES, WITH (B) ABOUT 0.25-2.5 MOLES OF AN EPOXY COMPOUND CONTAINING IN THE MOLECULE ON THE AVERAGE MORE THAN ONE EPOXY GROUP, AND (C) ABOUT 0.1-2 MOLES OF AN AMINE OF THE GENERAL FORMULA R1-N(-R2)-R3 WHEREIN R1 REPRESENTS AN ALKYL GROUP HAVING 2-4 CARBON ATOMS OR AN ALKANOL GROUP OF 2-5 CARBON ATOMS, R2 AND R3 REPRESENT HYDROGEN, AN ALKYL GROUP HAVING 1-4 CARBON ATOMS, OR AN ALKANOL GROUP HAVING 2-5 CARBON ATOMS, WHEREIN RR2 AND/OR R3 REPRESENT IDENTICAL OR DIFFERENT GROUPS, AND AT LEAST TWO REACTIVE HYDROGEN ATOMS ARE PRESENT IN THE MOLECULE OF THE GENERAL FORMULA, UNDER HEATING, PREFERABLY IN THE PRESENCE OF WATER-MISCIBLE SOLVENTS BOILING AT MORE THAN ABOUT 50*C.

Inventors

  • 👤 W Bernheim
  • 👤 H Deiner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 13:31
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/432; C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/30; C08G59/306; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4021; C08G59/50; C08G59/56; C08J; C08J3/00; C08J3/02; C08J3/03; C08L; C08L83/00; C08L83/04; C08G77/00; C08G77/04; C08G77/12; C08G77/42; C08G77/44; C09; C09K; C09K23/00; C09K23/16; C09K23/52

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) 1976-04-23 1976-10-23 1977-04-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-23 1980-10-23 1981-04-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-23 1984-10-23 1985-04-24 $7700.00 Window Closed / Lapsed

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