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:
Feb. 10, 2015
Filed:
Mar. 16, 2012
Scott R. White, Champaign, IL (US);
Jeffrey S. Moore, Savoy, IL (US);
Nancy R. Sottos, Champaign, IL (US);
Benjamin J. Blaiszik, Urbana, IL (US);
Mary M. Caruso, Oakdale, MN (US);
Christian L. Mangun, Urbana, IL (US);
Scott R. White, Champaign, IL (US);
Jeffrey S. Moore, Savoy, IL (US);
Nancy R. Sottos, Champaign, IL (US);
Benjamin J. Blaiszik, Urbana, IL (US);
Mary M. Caruso, Oakdale, MN (US);
Christian L. Mangun, Urbana, IL (US);
The Board of Trustees of the University of Illinois, Urbana, IL (US);
Abstract
A method of making capsules includes forming a mixture including a core liquid, a polyurethane precursor system, a first component of a two-component poly(urea-formaldehyde) precursor system, and a solvent. The method further includes emulsifying the mixture, adding a second component of the two-component poly(urea-formaldehyde) precursor system to the emulsified mixture, and maintaining the emulsified mixture at a temperature and for a time sufficient to form a plurality of capsules that encapsulate at least a portion of the core liquid. The capsules made by the method may include a polymerizer in the capsules, where the capsules have an inner capsule wall including a polyurethane, and an outer capsule wall including a poly(urea-formaldehyde). The capsules may include in the solid polymer matrix of a composite material.