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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10807060 B1

PDFFull Text
Date of Patent:
Oct. 20, 2020

Filed:

Sep. 16, 2016

Method for preparing microcapsules by double emulsion

Applicant:

Calyxia, Paris, FR;

Inventors:

Jamie Walters, Paris, FR;

Damien Demoulin, Paris, FR;

Jérôme Bibette, Paris, FR;

Assignee:

CALYXIA, Paris, FR;

Attorney:

Troutman Pepper Hamilton Sanders LLP

Primary Examiner:

Irina S Zemel

Int. Cl.
CPC ...
B01F 3/08 (2006.01); B01J 13/14 (2006.01); C09B 67/02 (2006.01); A61K 9/16 (2006.01); A01N 25/28 (2006.01); C11D 17/00 (2006.01); A61K 8/11 (2006.01); A23K 40/30 (2016.01); A61K 8/87 (2006.01); A61Q 19/00 (2006.01); B01F 3/22 (2006.01); B01F 9/20 (2006.01); F28D 20/02 (2006.01); B01F 9/00 (2006.01);
U.S. Cl.
CPC ...
B01J 13/14 (2013.01); A01N 25/28 (2013.01); A23K 40/30 (2016.05); A61K 8/11 (2013.01); A61K 8/87 (2013.01); A61K 9/1617 (2013.01); A61K 9/1635 (2013.01); A61Q 19/00 (2013.01); B01F 3/0807 (2013.01); B01F 3/2292 (2013.01); B01F 9/20 (2013.01); C09B 67/0097 (2013.01); C11D 17/0039 (2013.01); A61K 2800/10 (2013.01); A61K 2800/33 (2013.01); A61K 2800/412 (2013.01); B01F 2003/0838 (2013.01); B01F 2009/0083 (2013.01); F28D 20/023 (2013.01);
Abstract

A method for preparing solid microcapsules, comprising the steps of adding under agitation a composition C1 comprising at least one active material to a cross-linkable liquid composition C2, the active material is not an additive to be used in the lubricant, fuel or bitumen industries, drilling sludges or muds, or oil exploration/production, compositions C1 and C2 being immiscible with each other. A first emulsion is obtained comprising droplets of composition C1 dispersed in composition C2, adding under agitation the first emulsion to a liquid composition C3, composition C3 and composition C2 being immiscible with each other, to obtain a second emulsion comprising droplets dispersed in composition C3. Loading the second emulsion in a mixer which applies a homogeneous controlled shear rate to said second emulsion, said shear rate being from 1 000 s-1 to 100 000 s-1, to obtain a third emulsion comprising droplets dispersed in composition C3, and cross-linking the droplets so that solid microcapsules dispersed in composition C3 are obtained.

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