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:
Oct. 06, 2015
Filed:
Apr. 09, 2012
Yi-hsiuan Yu, Taoyuan County, TW;
Ping-szu Tsai, Kaohsiung, TW;
Tsung-hsien Tsai, Kaohsiung, TW;
Bao-yann Lin, Hsinchu County, TW;
Ming-hsiung Wei, Taoyuan County, TW;
Yi-Hsiuan Yu, Taoyuan County, TW;
Ping-Szu Tsai, Kaohsiung, TW;
Tsung-Hsien Tsai, Kaohsiung, TW;
Bao-Yann Lin, Hsinchu County, TW;
Ming-Hsiung Wei, Taoyuan County, TW;
National Chung-Shan Institute of Science and Technology, Taoyuan County, TW;
Abstract
Phase change material microcapsules are obtained using a PMMA prepolymer and an organic-solvent free synthesis process. A polymer monomer and an initiator are subject to pre-polymerization in a water bath to form Polymethyl methacrylate (PMMA) prepolymer which is then prepared to be a stabilizer aqueous solution. A phase change material is added to the stabilizer aqueous solution and liquefied in advance, and stirred to form an emulsion by a homogenizing mixer. A starting agent, a cross-linking agent and a Polymethyl methacrylate methyl ester prepolymer are added to the emulsion containing the phase-change material. The emulsion is further stirred by the homogenizing mixer for micro-emulsification which then aggregates in water bath. In this way, the process may use organic-solvent free process to pre-polymerize the polymer monomer into a Polymethyl methacrylate prepolymer and carries out encapsulation and polymerization at an oil-water interface to achieve the preparation of phase change material microcapsules.