摘要:
Disclosed is a method of manufacturing a copolymer of a conjugated diene compound and an olefin other than the conjugated diene compound, where a conjugated diene compound and an olefin other than the conjugated diene compound is copolymerized in the presence of a polymerization catalyst composition containing components: (A) a rare earth element compound or a reactant of the rare earth element compound and a Lewis base; and (B) at least one selected from a group consisting of an ionic compound (B-1) composed of a non-coordinating anion and a cation, an aluminoxane (B-2), and at least one kind of halogen compound (B-3) selected from among a Lewis acid, a complex compound of a metal halide and a Lewis base, and an organic compound containing active halogen (when containing at least one of (B-1) and (B-3), the polymerization catalyst composition further contains component (C): an organometallic compound).
摘要:
The present invention provides a random copolymer that is used for manufacturing a tire having excellent rollability and wear resistance and that includes randomly arranged monomer units of a conjugated diene compound and of a non-conjugated olefin, a rubber composition containing the random copolymer, a cross-linked rubber composition obtained by crosslinking the rubber composition, and a tire manufactured by using the rubber composition or the cross-linked rubber composition. A copolymer of a conjugated diene compound and a non-conjugated olefin, including a random copolymer having randomly arranged monomer units of the conjugated diene compound and of the non-conjugated olefin, and containing, by more than 30 mol %, a unit derived from the conjugated diene compound.
摘要:
Provided is a block copolymer of a conjugated diene compound and a non-conjugated olefin, a rubber composition including the block copolymer, a crosslinked rubber obtained by crosslinking the rubber composition, and a tire using the rubber composition or the crosslinked rubber composition. The copolymer of the present invention is a block copolymer of a conjugated diene compound and a non-conjugated olefin, the copolymer having a peak area in a temperature range in a range of 70° C. to 110° C. that accounts for at least 60% of a peak area in a range of 40° C. to 140° C. and a peak area in a range of 110° C. to 140° C. that accounts for 20% or less of a peak area in a range of 40° C. to 140° C., the peak areas being measured by the differential scanning calorimetry (DSC) according to JIS K 7121-1987.
摘要翻译:提供了共轭二烯化合物和非共轭烯烃的嵌段共聚物,包含嵌段共聚物的橡胶组合物,通过交联橡胶组合物获得的交联橡胶和使用橡胶组合物或交联橡胶组合物的轮胎。 本发明的共聚物是共轭二烯化合物和非共轭烯烃的嵌段共聚物,该共聚物的峰面积在70℃〜110℃的范围内至少占到了 在40℃至140℃的范围内的峰面积为60%,在110℃至140℃的范围内的峰面积为范围内的峰面积的20%以下 为40℃〜140℃,根据JIS K 7121-1987通过差示扫描量热法(DSC)测定峰面积。
摘要:
The method for manufacturing a polymer of the present invention is a method for manufacturing a polymer where a hydroxy group is added to a terminal of either one of a homopolymer of a non-conjugated olefin, a homopolymer of a conjugated diene compound, and a copolymer of a conjugated diene compound and a non-conjugated olefin, the method comprising: a first reaction step of reacting a hydrocarbon containing at least either one of the non-conjugated olefin and the conjugated diene compound with an organic aluminum compound, using a rare earth element compound-containing catalyst; a second reaction step of reacting a first reactant obtained from the first reaction step with oxygen; and a third reaction step of reacting a second reactant obtained from the second reaction step with at least either one of water and alcohol.
摘要:
Provided is a copolymer of a conjugated diene compound and a non-conjugated olefin, the copolymer being a block copolymer, the conjugated diene compound unit having 1,2 adduct (including 3,4 adduct) content of 5% or less or the conjugated diene compound unit having a cis-1,4 bond content of more than 92%, in which preferred examples of the conjugated diene compound include 1,3-butadiene and isopropylene, and preferred examples of the non-conjugated olefin include ethylene, propylene, and 1-butene.
摘要:
The invention relates to a norbornene copolymer having excellent properties such as transparency, heat resistance, low water absorption and electric insulating property, which copolymer comprises a monomer unit represented by formula (1) and formula (2) and having a number average molecular weight (Mn) of 300,000 to 2,000,000. (In the formulae, R1 represents an alkyl group having 1 to 10 carbon atoms; and R2, R3 and R4 independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.)
摘要:
This invention provides a polybutadiene capable of improving wear resistance and resistance to crack growth in a rubber composition and a tire, wherein values of e, f and g derived from the following determinant (I): ( 1.7455 0 - 0.0151 - 0.0454 0.4292 - 0.0129 - 0.007 0 0.3746 ) ( log 10 ( a / d ) log 10 ( a / b ) log 10 ( a / c ) ) = ( e f g ) ( I ) (wherein a is a mountain peak value around 1130 cm−1 in a transmittance spectrum through Fourier transform infrared spectroscopy (FT-IR), and b is a valley peak value around 967 cm−1, and c is a valley peak value around 911 cm−1, and d is a valley peak value around 736 cm−1) satisfy relationships of equation (II): (Calculated value of cis-1,4 bond)=e/(e+f+g)×100≧99 and equation (III): (Calculated value of vinyl bond)=g/(e+f+g)×100≦0.
摘要翻译:本发明提供一种能够改善橡胶组合物和轮胎中的耐磨性和抗裂纹生长性的聚丁二烯,其中衍生自以下决定基(I)的e,f和g的值:(1.7455-0.0151-0.0454±0.4292-0.0129 (a / b)log 10(a / c))=(efg)(I)(其中a是1130cm左右的山峰值 -1,傅立叶变换红外光谱(FT-IR)为透射光谱,b为967cm -1左右的谷峰值,c为911cm -1附近的谷峰值,d为谷峰值 约736厘米-1)满足式(II)的关系:(顺式-1,4-键的计算值)= e /(e + f + g)×100≧99和式(III):(乙烯基的计算值 键)= g /(e + f + g)×100≦̸ 0。
摘要:
The invention relates to a pneumatic tire having excellent mechanical properties by using a rubber composition containing a polybutadiene rubber having a high cis-1,4 bond content, a low vinyl bond content and proper number average molecular weight and molecular weight distribution, and more particularly to a pneumatic tire characterized in that a rubber composition including a polybutadiene with a cis-1,4 bond content of not less than 99.0% and a vinyl bond content of not more than 0.3% as measured by a Fourier transform infrared spectroscopy is used in any one of tire members.
摘要:
The present invention relates to a catalyst composition for polymerization of a conjugated diene, comprising: (A) a metallocene-type complex represented by a general formula (I): (C5R1R2R3R4R5)aMXb.Lc (where, M represents a rare earth metal; C5R1R2R3R4R5 represents a substituted cyclopentadienyl group; R1 to R5 represent the same or different hydrocarbon groups (except when R1=R2=R3=R4=R5=a methyl group); X represents a hydrogen atom, a halogen atom, an alkoxide group, a thiolate group, an amide group, or a hydrocarbon group having 1 to 20 carbon atoms; L represents a Lewis basic compound; “a” represents an integer of 1, 2, or 3; “b” represents an integer of 0, 1, or 2; and “c” represents an integer of 0, 1, or 2); and (B) an ionic compound composed of a non-coordinating anion and a cation, and/or an aluminoxane. The present invention provides a catalyst composition for polymerization for production of a polymer having a high content of cis-1,4-configuration in microstructure and a narrow molecular weight distribution.
摘要翻译:本发明涉及共轭二烯的聚合用催化剂组合物,其包含:(A)由通式(I)表示的金属茂型络合物:(C 5 R 1) R 2 O 3 R 3 S 4 R 4 S 5 R 5 S 2 S 2 R 3 S 2 R 3 (其中,M表示稀土金属; C 5 R 1,R 2,R 2, R 3 R 4 R 5表示取代的环戊二烯基; R 1至R 0 > 5个表示相同或不同的烃基(除了当R 1 = R 2 = R 3 = R 0时, 4 = R 5 =甲基); X表示氢原子,卤素原子,醇盐基,硫醇基,酰胺基或具有1〜 20个碳原子; L表示路易斯碱性化合物;“a”表示1,2或3的整数;“b”表示0,1或2的整数;“c”表示0,1或2的整数 ,或2); 和(B)由非配位阴离子和阳离子组成的离子化合物和/或铝氧烷。 本发明提供了一种聚合用催化剂组合物,其用于生产具有高度的显微组织中顺式-1,4-构型含量和窄分子量分布的聚合物。
摘要:
The present invention relates to a catalyst for polymerization of a conjugated diene or the like, which is composed of a metallocene-type cation complex of a gadolinium compound. Examples of such catalyst include a metallocene-type cation complex of a trivalent gadolinium compound represented by the general formula (I): RaGdXb (wherein, Gd represents gadolinium; R represents a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a fluorenyl group, or a substituted fluorenyl group; X represents an anion; “a” represents an integer of 1 or 2; and “b” represents an integer of 1 or 2). The present invention provides a catalyst by which polymerization of a conjugated diene or copolymerization of a conjugated diene and an aromatic vinyl compound can be carried out efficiently and inexpensively.