Title:
PROCESS FOR PRODUCING NATURAL RUBBER REDUCED IN VISCOSITY, NATURAL RUBBER REDUCED IN VISCOSITY OBTAINED BY THE PROCESS, AND RUBBER COMPOSITION CONTAINING THE SAME
Document Type and Number:
WIPO Patent Application WO/2007/049460
Kind Code:
A1
Abstract:
A process for producing a natural rubber made to have a low viscosity or constantly low viscosity which comprises (i) treating a natural-rubber latex with a water-soluble ammonium salt to reduce the metal content in the natural-rubber latex and (ii) subsequently spraying the treated natural-rubber latex in a pulse wave atmosphere, optionally after adding a viscosity stabilizer, to thereby conduct pulse drying and obtain a solid rubber. Also provided is a natural rubber obtained by the process. It has excellent mechanical properties, has a low viscosity or a constantly low viscosity, and has excellent processability.
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Inventors:
KAWAZURA TETSUJI (JP)
KAKUBO TAKASHI (JP)
KAKUBO TAKASHI (JP)
Application Number:
PCT/JP2006/320350
Publication Date:
May 03, 2007
Filing Date:
October 05, 2006
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
KAWAZURA TETSUJI (JP)
KAKUBO TAKASHI (JP)
KAWAZURA TETSUJI (JP)
KAKUBO TAKASHI (JP)
International Classes:
C08C1/14; C08C1/02
Foreign References:
| JP2005194503A | 2005-07-21 | |||
| JP2004250546A | 2004-09-09 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (Toranomon 37 Mori Bldg. 5-1, Toranomon 3-chome, Minato-k, Tokyo 23, JP)
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