Granules obtained by drying a multiple emulsion

Details Granules obtained by drying a multiple emulsion Granules obtained by drying a multiple emulsion

2006-09-05

2006-09-05

Seidleck, James J. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S501000, C424S401000

Reexamination Certificate

active

07101931

ABSTRACT:
The invention concerns granules obtainable by drying an inverse emulsion, dispersed in an external aqueous phase: a) the inverse emulsion comprising an internal aqueous phase, including a hydrophilic active material, dispersed in an internal organic phase, said inverse emulsion including at least a non-ionic surfactant and/or at least an amphiphilic block polymer, and/or at least a cationic surfactant; b) the external aqueous phase including: at least a polyalkylated non-ionic surfactant and/or at least a polalkylated amphiphilic non-ionic polymer; at least a water soluble or water dispersible polymer in solid form in the presence of a water content of not more than 10 wt. % relative to the weight of said polymer and whereof the glass transition temperature is higher than 25° C., preferably higher than 50° C. The granules, once dispersed, enable to obtain a multiple emulsion.

REFERENCES:
patent: 4954298 (1990-09-01), Yamamoto
patent: 5750124 (1998-05-01), Gohla
patent: 5840943 (1998-11-01), Ansmann
patent: 6685952 (2004-02-01), Ma et al.
patent: 2 785 198 (2000-05-01), None
“Ullmann's Encyclopedia of Industrial Chemistry, 5thEdition, vol. A9” 1988, VCH, Weinheim (Allemagne) XP00219246, p. 321-p. 325.

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