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.:
Date of Patent:
Apr. 11, 2017
Filed:
Nov. 24, 2011
Say Chye Joachim Loo, Singapore, SG;
Yit Lung Khung, Singapore, SG;
Wei LI Lee, Singapore, SG;
Nanyang Technological University, Singapore, SG;
Abstract
The present invention relates to a method for encapsulating particles of a water-insoluble material within a capsule of a water-insoluble polymer, comprising (a) dispersing particles of the water-insoluble material or a solution containing the water-insoluble material in a first aqueous phase containing a first surfactant to obtain a first dispersion; (b) collecting the particles of the water-insoluble material coated with the first surfactant; (c) washing the collected particles; (d) adding the washed surfactant-coated water-insoluble material particles to a polymer solution containing the water-insoluble polymer of the capsule to obtain a polymer mixture; and (e) dispersing the polymer mixture in a second aqueous phase containing a second surfactant to obtain a second dispersion comprising the particles of the water-insoluble material encapsulated within the capsule of the water-insoluble polymer.