NATURAL RUBBER PRODUCED FROM LATEX AND COMPOSITION COMPRISING THE SAME

WIPO Patent Application WO2002038667

A3

Provided is a natural rubber obtained by drying a gathered natural rubber latex without coagulating, wherein a drum dryer and/or a conveyor type dryer are used for drying. Further, provided are a production process for a natural rubber-filler mixture prepared by adding at least one of carbon black and inorganic fillers to a natural rubber latex, a natural rubber added a viscosity stabilizer comprising hydrazide compounds or esters of aromatic or aliphatic polycarboxylic acid derivatives to these natural rubber and natural rubber-filler mixture, and a rubber composition which is prepared using the above natural rubbers and which is excellent in productivity, abrasion resistance and fracture resistance.

TORATANI HIROTOSHI (JP)
IWAFUNE SEIICHIRO (JP)
KIJIMA KEN (JP)
MAEDA HIROMI (JP)
HASHIMOTO TAKATSUGU (JP)
YANAGISAMA KAZUHIRO (JP)

PCT/JP2001/009552

March 20, 2003

October 31, 2001

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BRIDGESTONE CORP (JP)
TORATANI HIROTOSHI (JP)
IWAFUNE SEIICHIRO (JP)
KIJIMA KEN (JP)
MAEDA HIROMI (JP)
HASHIMOTO TAKATSUGU (JP)
YANAGISAMA KAZUHIRO (JP)

B29B13/06; C08C1/075; C08C1/12; C08K3/22; C08K5/10; C08K5/12; C08K5/25; C08K3/00; C08L7/00; C08L7/02; (IPC1-7): C08C1/12; C08J3/00; C08L7/00; C08K3/22; B29B13/06; C08K5/10; C08K5/25

US0531781A	1895-01-01
US0765167A	1904-07-19
GB425729A	1935-03-20
US1740994A	1929-12-24
US2851507A	1958-09-09
GB1394186A	1975-05-14
GB1472064A	1977-04-27
EP0613924A1	1994-09-07
US5693695A	1997-12-02
US2040550A	1936-05-12
GB441850A	1936-01-20
US1542388A	1925-06-16
EP1026196A2	2000-08-09
US2404582A	1946-07-23
EP0846719A1	1998-06-10

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