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:
Mar. 31, 2020
Filed:
May. 29, 2018
Nanjing University, Nanjing, CN;
Nanjing University & Yancheng Academy of Environmental Protection Technology and Engineering, Yancheng, CN;
Chendong Shuang, Nanjing, CN;
Weiwei Zhou, Nanjing, CN;
Yunshu Wang, Nanjing, CN;
Aimin Li, Nanjing, CN;
Qimeng Li, Nanjing, CN;
Lili Liu, Nanjing, CN;
Wei Wang, Nanjing, CN;
Yi Zhang, Nanjing, CN;
Nanjing University, Nanjing, CN;
Nanjing University & Yancheng Academy of Environmental Protection Technology and Engineering, Yancheng, CN;
Abstract
A method for green synthesis of uniform- and large-particle-size polystyrene particles, comprising steps of: prepolymerizing styrene at 70□ to 75□ for 1 h to 6 h in advance while stirring, adding divinylbenzene dissolved with initiators to the styrene, and stirring for 10 min to 30 min to obtain oil phase; heating lactic acid or an aqueous solution of lactic acid to 70□ to 80□, adding the oil phase to dispersed phase by a constant-pressure device, maintaining the temperature for 2 h, heating to 80±5□ and then maintaining the temperature for 1 h, and heating to 85±5□ and then maintaining the temperature for 3 h to 6 h, to obtain polystyrene particles with a uniform particle size ranging from 0.7 mm to 2.0 mm.