RUBBER PARTICLE FRACTIONATION METHOD, TRANSPORT METHOD, AND STORAGE METHOD

WIPO Patent Application WO/2015/107824

A1

The present invention provides an effective method for fractionating rubber particles in a natural rubber latex on the basis of size, and an effective method for transporting and storing rubber particles. The present invention relates to a method for fractionating rubber particles included in a natural rubber latex on the basis of size, the rubber particle fractionation method comprising fractionating rubber particles by at least four stages of centrifugal separation of the natural rubber latex by centrifugal forces of 800-3,000 ×g, 6,500-10,000 ×g, 17,000-22,000 ×g, and 40,000-60,000 ×g. The present invention also relates to a method for transporting and storing rubber particles, the method including a step for adding a buffer solution and an antioxidant to a natural rubber latex or rubber particles fractionated from a natural rubber latex, and a step for freezing a liquid mixture prepared by the aforementioned step.

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YAMAGUCHI HARUHIKO (JP)
INOUE YUKINO (JP)
TAKAHASHI SEIJI (JP)
NAKAYAMA TORU (JP)
YAMASHITA SATOSHI (JP)

PCT/JP2014/083188

July 23, 2015

December 16, 2014

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SUMITOMO RUBBER IND (JP)
UNIV TOHOKU (JP)

C08J3/12; C08C1/10

US20110201771A1	2011-08-18
CN102321197A	2012-01-18
JP2010164537A	2010-07-29
JP2013162776A	2013-08-22
JP2011074392A	2011-04-14
JP2010168414A	2010-08-05

YASUTOMI & Associates (JP)
Patent business corporation Yasutomi international patent firm (JP)

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