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EP0023302A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Spray drying of microcapsule dispersions

Assignee: Bayer AG
•
Filing: 1980-07-12
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Granted: —
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Expires: 2000-07-12
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Abstract

Abstract Translated from German Verfahren zur Sprühtrocknung von wäßrigen Suspensionen von Mikrokapseln mit Wänden aus Polyharnstoff, die in an sich bekannter Weise durch Grenzflächenpolyaddition aus Polyisocyanat und Polyamin gebildet wurden, bei dem man dem wäßrigen Reaktionsgemisch aus Polyisocyanat und Polyamin 1 bis 10 Gew.-Teile, bezogen auf Mikrokapseln, eines wasserlöslichen Erdalkalisalzes und oder eines wasserlöslichen Silikats zufügt. Process for spray drying aqueous suspensions of microcapsules with walls made of polyurea, which were formed in a manner known per se by interfacial polyaddition of polyisocyanate and polyamine, in which 1 to 10 parts by weight, based on microcapsules, of the aqueous reaction mixture of polyisocyanate and polyamine are used. a water-soluble alkaline earth salt and or a water-soluble silicate.

Inventors

  • 👤 Heinrich Dr. Alberts
  • 👤 Manfred Dr. Dahm
  • 👤 Gert Dr. Jabs
  • 👤 Christian Dr. Wegner

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 19:04
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; B01J13/20; B01J13/06; B01J13/14; B01J13/16; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2985

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