Title:
METHOD FOR FLOCCULATING FRESH LATEX
Document Type and Number:
WIPO Patent Application WO/2020/087952
Kind Code:
A1
Abstract:
Disclosed is a method for flocculating fresh latex, comprising firstly, slowly adding fresh latex into a seawater-like flocculant under stirring and continuing stirring for 20-40 minutes after complete addition of the fresh latex, reacting the fresh latex and the seawater-like flocculant at 40-60ºC for 1-3 hours, and then allowing the reaction to cool naturally to 15-35ºC to obtain a latex clot; and subsequently, rinsing the latex clot with 300 mL of deionized water, and then placing the latex clot in an open mill and a drying machine successively to conduct dehydration and drying, thus obtaining natural rubber. The method has the following advantages: firstly, the seawater-like flocculant is inexpensive, readily available, and environmentally friendly; secondly, the requirement for equipment is low and conventional equipment will suffice, and the reaction conditions are mild and do not cause corrosion of equipment; thirdly, no irritating smell is generated during the production process, reducing the impact on operators, and being friendly to the environment; and fourthly, the impact of weather, fresh latex quality and a non-tapping period, amongst other factors, on the continuous production of natural rubber can be overcome.
Inventors:
WANG CHUANSHENG (CN)
XIE MIAO (CN)
JIANG RUI (CN)
XIE MIAO (CN)
JIANG RUI (CN)
Application Number:
PCT/CN2019/093192
Publication Date:
May 07, 2020
Filing Date:
June 27, 2019
Export Citation:
Assignee:
QINGDAO UNIV OF SCIENCE AND TECHNOLOGY (CN)
International Classes:
C08C1/15; C08C1/14; C08C1/16
Foreign References:
| CN109485753A | 2019-03-19 | |||
| CN109485752A | 2019-03-19 | |||
| CN109369827A | 2019-02-22 | |||
| CN103864963A | 2014-06-18 | |||
| CN103864963A | 2014-06-18 | |||
| CN1222528A | 1999-07-14 | |||
| CN102070789A | 2011-05-25 | |||
| CN103204959A | 2013-07-17 | |||
| CN105669881A | 2016-06-15 | |||
| CN103159866A | 2013-06-19 | |||
| JPS5622301A | 1981-03-02 | |||
| GB589248A | 1947-06-16 | |||
| US6025451A | 2000-02-15 |
Attorney, Agent or Firm:
BEIJING JINSHUOGUO INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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