SULFUR-MODIFIED CHLOROPRENE RUBBER AND METHOD FOR PRODUCING SAME, SULFUR-MODIFIED CHLOROPRENE RUBBER COMPOSITION, VULCANIZATE, AND MOLDED ARTICLE

WIPO Patent Application WO/2020/189518

A1

Provided is a sulfur-modified chloroprene rubber having a functional group A represented by general formula (A) and located at a terminal of the molecule, and a functional group B represented by general formula (B) and at a terminal of the molecule, wherein the mass ratio B/A of the content of functional group B to the content of functional group A is 12.00 or less, and the total amount of functional group A and functional group B is 0.10-1.00 mass%. (In formula (A), Ra1 and Ra2 each independently represent a hydrogen atom, a halogen atom, a hydroxy group, an alkoxy group, a carboxy group, a carboxylate group, a cyano group, an alkyl group which may have a substituent, or an arylthio group which may have a substituent, and Ra1 and Ra2 may bond with each other to form a ring which may have a substituent.) (In formula (B), Rb1 and Rb2 each independently represent an alkyl group which may have a substituent, or an aryl group which may have a substituent.)

KONDO ATSUNORI (JP)
SUNADA TAKASHI (JP)

PCT/JP2020/010889

September 24, 2020

March 12, 2020

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DENKA COMPANY LTD (JP)

C08F8/34; C08K5/39; C08K5/47; C08L15/02

WO2010095591A1	2010-08-26
WO2019102898A1	2019-05-31

JPS59115346A	1984-07-03
JP2013216029A	2013-10-24
JPH093120A	1997-01-07
JP2020002432A	2020-01-09
JPS53132083A	1978-11-17
JP2013144748A	2013-07-25
JPH08188676A	1996-07-23
JP2013139490A	2013-07-18
JPH09268239A	1997-10-14
JPH10130424A	1998-05-19
JP2010121086A	2010-06-03
JP2012111899A	2012-06-14
JP2016141736A	2016-08-08

See also references of EP 3889189A4

HASEGAWA Yoshiki et al. (JP)

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