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1.发明公开
公开(公告)号：EP4321542A1
公开(公告)日：2024-02-14
申请号：EP22784896.7
申请日：2022-04-05
发明人： PAIK, Hyun Jong , KIM, Won Ho , YEOM, Gyeong Dong , KIM, Dong Hyuk , CHOI, Ha Eun , SONG, Sang Hoon
摘要： The present invention relates to a liquid butadiene compound with both ends modified, a method for preparing same, and a use thereof. More specifically, the present invention provides a liquid bu-tadiene rubber compound with both ends modified that is synthesized using a chain transfer agent having a triethoxysily functional group and a tetrasulfide functional group, and a 1,3-butadiene monomer, a rubber composition for a tire comprising same, a method for preparing same, and the like.
According to the present invention, by introducing a silica-friendly functional group at both ends of the chain, hysteresis or the like caused by the chain ends of an existing liquid butadiene rubber is controlled, and thus, various performances affecting fuel efficiency characteristics can be improved.-
2.发明公开
公开(公告)号：EP4310110A1
公开(公告)日：2024-01-24
申请号：EP22771389.8
申请日：2022-03-14
发明人： NAKAHAMA, Tatsumoto , KIKUCHI, Toshimitsu , SENGA, Hirofumi , SANO, Takuya , FUKUMOTO, Takato , SAKAGAMI, Yuto , HAYAKAWA, Toshiyuki
摘要： A conjugated diene-based polymer has a value α defined by mathematical expression (i) of 0.65 to 0.97. p, q, r, and s represent compositional ratios (mole ratios) of the structural units represented by formulas (1) to (4) respectively in the polymer. The conjugated diene-based polymer includes, in an amount of 25 to 75 mass%, polymer (A1) which has a multi-branched structure having 4 or more molecular chains. The polymer (A1) has a functional group containing at least one element selected from the group consisting of nitrogen, oxygen, and sulfur at one or both of a terminal and a branching point of the polymer (A1). α = p + 0.5 × r / p + q + 0.5 × r + s
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公开(公告)号：EP3689926B1
公开(公告)日：2023-03-15
申请号：EP19798869.4
申请日：2019-05-08
发明人： LEE, Tae Chul , KIM, Min Soo , SON, Ki Seok , KIM, No Ma
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公开(公告)号：EP3696204B1
公开(公告)日：2022-08-03
申请号：EP18867046.7
申请日：2018-09-28
发明人： SAKURAI, Takuro , IIZUKA, Takashi , FUJII, Mana , HAMA, Hisakatsu
IPC分类号： C08F36/06 , C08F36/08 , C08F297/02 , B60C1/00 , C08K3/36 , C08L53/00 , C08F297/04
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公开(公告)号：EP3663101B1
公开(公告)日：2021-11-10
申请号：EP19213873.3
申请日：2019-12-05
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7.发明公开
公开(公告)号：EP3892652A1
公开(公告)日：2021-10-13
申请号：EP19891970.6
申请日：2019-10-17
摘要： Provided is novel polybutadiene having high isotacticity. The polybutadiene has a triad isotacticity (mm) of 72 % or more.
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公开(公告)号：EP3080166B1
公开(公告)日：2021-05-05
申请号：EP14815270.5
申请日：2014-12-03
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公开(公告)号：EP3190130B1
公开(公告)日：2020-08-12
申请号：EP15838378.6
申请日：2015-09-03
申请人： Kuraray Co., Ltd.
IPC分类号： C08F2/06 , C08F297/04 , C08F36/06
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公开(公告)号：EP3670542A1
公开(公告)日：2020-06-24
申请号：EP19214703.1
申请日：2019-12-10
发明人： MA, Liqing
摘要： The present invention is directed to a functionalized elastomer comprising the reaction product of a living anionic elastomeric polymer and a polymerization terminator of formula I
where n is an integer from 1 to 3;
X is a tetravalent organic group selected from a hydrocarbyl group of formula C m H 2m-2 where m is an integer from 1 to 10, a group of formula II
where R 3 is C1 to C10 alkane diyl, and the group of phenyl diyl;
R 1 and R 2 are independently selected from C1 to C10 alkyl, and a group of formula III
where R 4 , R 5 are independently C1 to C10 alkyl, and R 6 is C1 to C10 alkanediyl;
or R 1 and R 2 taken together with their common Si atom form a five-membered heterocyclic ring selected from formulas IV and V
where R7 is from C1 to C10 alkyl.
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