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1. 发明授权

US5679751A Solution polymerization process for synthesis of styrene-butadiene or styrene-isoprene rubber 失效
标题翻译：用于合成苯乙烯 - 丁二烯或苯乙烯 - 异戊二烯橡胶的溶液聚合方法
公开(公告)号：US5679751A
公开(公告)日：1997-10-21
申请号：US599542
申请日：1996-02-12
申请人： Adel Farhan Halasa , Laurie Elizabeth Austin , Wen-Liang Hsu , Bill Bud Gross
发明人： Adel Farhan Halasa , Laurie Elizabeth Austin , Wen-Liang Hsu , Bill Bud Gross
IPC分类号： B60C1/00 , C08F4/46 , C08F4/48 , C08F236/10
CPC分类号： B60C1/0016 , C08F236/10
摘要： The subject invention relates to a technique for synthesizing rubbery copolymers of styrene and butadiene and/or isoprene. These rubbers exhibit an excellent combination of properties for utilization in high performance tire tread rubber compounds. The subject invention specifically discloses a process for preparing a styrene-butadiene rubber (SBR) which comprises: copolymerizing from about 30 weight percent to about 55 weight percent styrene and from about 45 weight percent to about 70 weight percent 1,3-butadiene in an alkane solvent, such as hexane, at a temperature which is within the range of about -10.degree. C. to about 150.degree. C. in the presence of (a) an alkali metal alkoxide, and (b) an organolithium compound, wherein the molar ratio of the alkali metal alkoxide to the organolithium compound is within the range of about 0.01:1 to about 1:1. The subject invention further discloses a process for preparing a rubbery copolymer of styrene and isoprene having an excellent combination of properties for use in making tire treads by a solution polymerization process which comprises: copolymerizing from about 30 weight percent to about 55 weight percent styrene and from about 45 weight percent to about 70 weight percent isoprene in an alkane solvent at a temperature which is within the range of about -10.degree. C. to about 150.degree. C. in the presence of (a) an alkali metal alkoxide, and (b) an organolithium compound, wherein the molar ratio of the alkali metal alkoxide to the organolithium compound is within the range of about 0.01:1 to about 1:1.
摘要翻译：本发明涉及一种合成苯乙烯和丁二烯和/或异戊二烯橡胶共聚物的技术。这些橡胶在高性能轮胎胎面橡胶化合物中表现出优异的性能组合。本发明具体公开了一种制备苯乙烯 - 丁二烯橡胶（SBR）的方法，其包括：以约30重量％至约55重量％的苯乙烯和约45重量％至约70重量％的1,3-丁二烯的共聚合烷烃溶剂如己烷，在（a）碱金属醇盐存在下，在约-10℃至约150℃的温度范围内，和（b）有机锂化合物，其中，碱金属醇盐与有机锂化合物的摩尔比在约0.01:1至约1:1的范围内。本发明进一步公开了一种制备苯乙烯和异戊二烯的橡胶共聚物的方法，其具有通过溶液聚合方法制备轮胎胎面的优异的性能组合，其包括：共聚约30重量％至约55重量％的苯乙烯和在（a）碱金属醇盐存在下，在约-10℃至约150℃的温度下，在烷烃溶剂中约45重量％至约70重量％的异戊二烯，和（b ）有机锂化合物，其中碱金属醇盐与有机锂化合物的摩尔比在约0.01:1至约1:1的范围内。

2. 发明授权

US07943712B2 Catalyst system for synthesizing amine functionalized rubbery polymers having a high trans microstructure 有权
标题翻译：用于合成具有高反向显微组织的胺官能化橡胶状聚合物的催化剂体系
公开(公告)号：US07943712B2
公开(公告)日：2011-05-17
申请号：US11617361
申请日：2006-12-28
申请人： Adel Farhan Halasa , Wen-Liang Hsu , Laurie Elizabeth Austin , Chad Aaron Jasiunas , Steven Kristofer Henning
发明人： Adel Farhan Halasa , Wen-Liang Hsu , Laurie Elizabeth Austin , Chad Aaron Jasiunas , Steven Kristofer Henning
IPC分类号： C08F4/50 , C08F2/06 , C07F7/08
CPC分类号： C08F36/04 , C08F4/48 , C08F4/54
摘要： The present invention is directed to a catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber, styrene-butadiene rubber, isoprene-butadiene rubber, or styrene-isoprene-butadiene rubber, that are amine functionalized and have a high trans microstructure. The catalyst system, in one embodiment, includes (a) an organolithium amine compound, (b) a group IIa metal salt of an amino glycol or a glycol ether, (c) an organoaluminum compound, and optionally (d) an amine compound. The amine functionalized rubbery polymers can be utilized in tire tread rubbers where the rubbery polymers may provide desirable wear properties without substantially sacrificing other performance characteristic(s), e.g., traction properties.
摘要翻译：本发明涉及一种用于合成胺官能化并具有高反相微观结构的橡胶状聚合物如聚丁二烯橡胶，苯乙烯 - 丁二烯橡胶，异戊二烯 - 丁二烯橡胶或苯乙烯 - 异戊二烯 - 丁二烯橡胶的催化剂体系。在一个实施方案中，催化剂体系包括（a）有机锂胺化合物，（b）氨基二醇或二醇醚的IIa族金属盐，（c）有机铝化合物和任选的（d）胺化合物。胺官能化橡胶状聚合物可用于轮胎胎面橡胶中，其中橡胶状聚合物可提供期望的耐磨性，而基本上不会牺牲其它性能特征，例如牵引性能。

3. 发明授权

US07189792B2 Catalyst for synthesizing high trans polymers 失效
标题翻译：用于合成高反式聚合物的催化剂
公开(公告)号：US07189792B2
公开(公告)日：2007-03-13
申请号：US11311495
申请日：2005-12-19
申请人： Adel Farhan Halasa , Wen-Liang Hsu , Chad Aaron Jasiunas , Laurie Elizabeth Austin
发明人： Adel Farhan Halasa , Wen-Liang Hsu , Chad Aaron Jasiunas , Laurie Elizabeth Austin
IPC分类号： C08F4/50 , C08F36/06
CPC分类号： C08F36/06 , C08F4/484 , C08F4/52 , C08F4/48 , C08F4/50
摘要： The process and catalyst of this invention can be utilized to synthesize homo and copolymers of conjugated diene monomers and vinyl aromatic monomers having high trans contents of greater than 60% with low melting points. These homo and copolymers of conjugated diene monomers and vinyl aromatic monomers can be utilized in tire tread and sidewall rubbers that exhibit outstanding wear and tear characteristics in the tread and excellent flexing properties in the sidewall. The rubber polymers of this invention are made utilizing an improved catalyst system. This catalyst system is comprised of (a) organo aluminum compounds, (b) organo lithium compounds, (c) a barium compound selected from barium salts of (i) di(ethylene glycol) ethyl ether, (ii) di(ethylene glycol) propyl ether, (iii) di(ethylene glycol) hexyl ether, (iv) di(N,N-dimethyl amino glycol) ethyl ether, (v) menthol and thymol in the presence of polar modifier consisting of water, alcohols, amines, thiols, phosphates and phosphites. The trans polymers and copolymers of this invention made with the above catalyst system typically have a glass transition temperature ranging from −97° C. to −40° C., a melt temperature ranging from −30° C. to +30° C., and a number average molecular weight from 20,000 to 250,000. The inclusion of such polar modifiers in the barium catalyst system results in a high styrene content in copolymerization, a high trans content, and high molecular weight. Copolymers of conjugated diolefin monomers and vinyl aromatic monomers made with the catalyst system of this invention also have a tapered macrostructure.
摘要翻译：本发明的方法和催化剂可用于合成共轭二烯单体和具有高反式含量大于60％的低熔点的乙烯基芳族单体的均聚物和共聚物。共轭二烯单体和乙烯基芳族单体的这些均聚物和共聚物可以用于轮胎胎面和侧壁橡胶，其在胎面中表现出优异的耐磨性和优异的弯曲性能。使用改进的催化剂体系制备本发明的橡胶聚合物。该催化剂体系包括（a）有机铝化合物，（b）有机锂化合物，（c）选自（i）二（乙二醇）乙醚的钡盐，（ii）二（乙二醇）丙基醚，（iii）二（乙二醇）己基醚，（iv）二（N，N-二甲基氨基乙二醇）乙醚，（v）薄荷醇和百里酚在由水，醇，胺，硫醇，磷酸盐和亚磷酸盐。用上述催化剂体系制备的本发明的反式聚合物和共聚物通常具有-97℃至-40℃的熔融温度范围为-30℃至+ 30℃的玻璃化转变温度。，数均分子量为20,000〜250,000。在钡催化剂体系中包含这种极性改性剂导致共聚反应中苯乙烯含量高，反式含量高，分子量高。用本发明的催化剂体系制得的共轭二烯烃单体和乙烯基芳族单体的共聚物也具有锥形宏观结构。

4. 发明授权

US5859133A Tire tread compound 失效
标题翻译：轮胎胎面复合物
公开(公告)号：US5859133A
公开(公告)日：1999-01-12
申请号：US617234
申请日：1996-03-18
申请人： David John Zanzig , Adel Farhan Halasa , Wen-Liang Hsu , Paul Harry Sandstrom , Laurie Elizabeth Austin
发明人： David John Zanzig , Adel Farhan Halasa , Wen-Liang Hsu , Paul Harry Sandstrom , Laurie Elizabeth Austin
IPC分类号： B60C1/00 , C08L9/00 , C08L21/00 , C08L53/00 , C08L53/02 , C08F236/08 , C08F236/06
CPC分类号： C08L21/00 , B60C1/0016 , C08F297/04 , C08L53/00 , C08L9/00 , C08L9/06
摘要： The subject invention discloses a pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of (a) an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has essentially one glass transition temperature which is within the range of about -100.degree. C. to about -70.degree. C., wherein said isoprene-butadiene diblock polymer has a Mooney ML-4 viscosity at 100.degree. C. which is within the range of about 50 to about 140, and wherein the repeat units derived from isoprene and 1,3-butadiene in the isoprene-butadiene block are in essentially random order; and (b) a second rubber selected from the group consisting of high vinyl polybutadiene rubber, styrene-isoprene-butadiene rubber, solution styrene-butadiene rubber and emulsion styrene-butadiene rubber.
摘要翻译：本发明公开了一种具有外周胎面的充气轮胎，其中所述胎面是由（a）异戊二烯 - 丁二烯二嵌段橡胶组成的硫固化橡胶组合物，所述异戊二烯 - 丁二烯二嵌段橡胶由丁二烯嵌段和异戊二烯 - 丁二烯嵌段，其中所述丁二烯嵌段的数均分子量在约25,000至约350,000的范围内，其中所述异戊二烯 - 丁二烯嵌段的数均分子量在约25,000至约350,000的范围内，其中所述异戊二烯 - 丁二烯二嵌段橡胶具有在约-100℃至约-70℃范围内的基本上一个玻璃化转变温度，其中所述异戊二烯 - 丁二烯二嵌段聚合物在100℃下具有门尼ML-4粘度，其在约50至约140的范围内，并且其中衍生自异戊二烯和1,3-丁二烯的异戊二烯 - 丁二烯嵌段中的重复单元基本上为兰德呃订单和（b）选自高乙烯基聚丁二烯橡胶，苯乙烯 - 异戊二烯 - 丁二烯橡胶，溶剂苯乙烯 - 丁二烯橡胶和乳液丁苯橡胶的第二橡胶。

5. 发明申请

US20080161518A1 Catalyst System for Synthesizing Amine Functionalized Rubbery Polymers Having a High Trans Microstructure 有权
标题翻译：用于合成具有高转移微结构的胺官能化橡胶聚合物的催化剂体系
公开(公告)号：US20080161518A1
公开(公告)日：2008-07-03
申请号：US11617361
申请日：2006-12-28
申请人： Adel Farhan Halasa , Wen-Liang Hsu , Laurie Elizabeth Austin , Chad Aaron Jasiunas , Steven Kristofer Henning
发明人： Adel Farhan Halasa , Wen-Liang Hsu , Laurie Elizabeth Austin , Chad Aaron Jasiunas , Steven Kristofer Henning
IPC分类号： C08F4/48 , B60C1/00 , C08K3/04 , C08K3/36
CPC分类号： C08F36/04 , C08F4/48 , C08F4/54
摘要： The present invention is directed to a catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber, styrene-butadiene rubber, isoprene-butadiene rubber, or styrene-isoprene-butadiene rubber, that are amine functionalized and have a high trans microstructure. The catalyst system, in one embodiment, includes (a) an organolithium amine compound, (b) a group IIa metal salt of an amino glycol or a glycol ether, (c) an organoaluminum compound, and optionally (d) an amine compound. The amine functionalized rubbery polymers can be utilized in tire tread rubbers where the rubbery polymers may provide desirable wear properties without substantially sacrificing other performance characteristic(s), e.g., traction properties.
摘要翻译：本发明涉及一种用于合成胺官能化并具有高反相微观结构的橡胶状聚合物如聚丁二烯橡胶，苯乙烯 - 丁二烯橡胶，异戊二烯 - 丁二烯橡胶或苯乙烯 - 异戊二烯 - 丁二烯橡胶的催化剂体系。在一个实施方案中，催化剂体系包括（a）有机锂胺化合物，（b）氨基二醇或二醇醚的IIa族金属盐，（c）有机铝化合物和任选的（d）胺化合物。胺官能化橡胶状聚合物可用于轮胎胎面橡胶中，其中橡胶状聚合物可提供期望的耐磨性，而基本上不会牺牲其它性能特征，例如牵引性能。

6. 发明授权

US06627715B2 Group IIa metal containing catalyst system 失效
标题翻译： IIa族金属含催化剂体系
公开(公告)号：US06627715B2
公开(公告)日：2003-09-30
申请号：US10124006
申请日：2002-04-17
申请人： Adel Farhan Halasa , Wen-Liang Hsu , Chad Aaron Jasiunas , John Robert Zuppo, III , Laurie Elizabeth Austin
发明人： Adel Farhan Halasa , Wen-Liang Hsu , Chad Aaron Jasiunas , John Robert Zuppo, III , Laurie Elizabeth Austin
IPC分类号： C08F450
CPC分类号： B01J31/143 , B01J31/0212 , B01J31/04 , B01J31/122 , B01J31/128 , B01J31/14 , C08F36/04 , C08F297/04 , C08F297/06 , C08F4/52 , C08F4/44 , C08F4/54
摘要： The group IIa metal containing catalyst system of this invention can be utilized to synthesize rubbery polymers having a high trans microstructure by solution polymerization. Such rubbery polymers having a high trans microstructure content, such as polybutadiene rubber, styrene-isoprene-butadiene rubber, styrene-butadiene rubber, can be utilized in tire tread rubbers that exhibit improved wear and tear characteristics. This invention more specifically reveals a catalyst system which is comprised of (a) an organolithium compound, including organolithium functionalized compounds, (b) a group IIa metal salt selected from the group consisting of group IIa metal salts of di(alkylene glycol)alkylethers and group IIa metal salts of tri(alkylene glycol) alkylethers, and (c) an organoaluminum compound, and optionally an organomagnesium compound. The subject invention further discloses a process for synthesizing rubbery polymers having a high trans microstructure by a process that comprises polymerizing a conjugated diolefin monomer in an organic solvent in the presence of a catalyst system that is comprised of (a) an organolithium compound, (b) a group IIa metal salt selected from the group consisting of group IIa metal salts of amino glycols and group IIa metal salts of glycol ethers, and (c) an organoaluminum compound.
摘要翻译：本发明的含IIa族金属的催化剂体系可用于通过溶液聚合合成具有高反相微观结构的橡胶状聚合物。具有高反式显微组织含量的这种橡胶状聚合物，例如聚丁二烯橡胶，苯乙烯 - 异戊二烯 - 丁二烯橡胶，苯乙烯 - 丁二烯橡胶，可用于表现出改善的磨损和撕裂特性的轮胎胎面橡胶。本发明更具体地揭示了一种催化剂体系，其包括（a）有机锂化合物，包括有机锂官能化化合物，（b）选自二（亚烷基二醇）烷基醚的IIa族金属盐和三（亚烷基二醇）烷基醚的IIa族金属盐，和（c）有机铝化合物和任选的有机镁化合物。本发明还公开了一种通过包括在（a）有机锂化合物（b）的催化剂体系存在下在有机溶剂中聚合共轭二烯烃单体的方法来合成具有高反向显微组织的橡胶状聚合物的方法，）选自IIa族氨基二醇金属盐和IIa族二醇醚金属盐的IIa族金属盐，和（c）有机铝化合物。

7. 发明授权

US07291687B1 Catalyst system for synthesizing rubbery polymers having a high trans microstructure content 失效
标题翻译：用于合成具有高反式显微组织含量的橡胶状聚合物的催化剂体系
公开(公告)号：US07291687B1
公开(公告)日：2007-11-06
申请号：US11468921
申请日：2006-08-31
申请人： Adel Farhan Halasa , Laurie Elizabeth Austin , Wen-Liang Hsu
发明人： Adel Farhan Halasa , Laurie Elizabeth Austin , Wen-Liang Hsu
IPC分类号： C08F36/04 , C08F4/50
CPC分类号： C08F36/04 , C08F4/54
摘要： The present invention is directed to a catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber and styrene-butadiene rubber, having a high trans microstructure. The catalyst system, in one embodiment, includes (a) a barium salt of an alcohol that is soluble in a hydrocarbon solvent, and (b) an organomagnesium compound. In one example, the alcohol is a primary or secondary alcohol. The catalyst system can further optionally include an alkali metal alkoxide, an organolithium compound, an amine compound, or mixtures thereof.
摘要翻译：本发明涉及一种用于合成橡胶状聚合物的催化剂体系，如聚丁二烯橡胶和苯乙烯 - 丁二烯橡胶，其具有高的反相微观结构。在一个实施方案中，催化剂体系包括（a）可溶于烃溶剂的醇的钡盐和（b）有机镁化合物。在一个实例中，醇是伯醇或仲醇。催化剂体系还可任选地包括碱金属醇盐，有机锂化合物，胺化合物或其混合物。

8. 发明授权

US06608154B2 Process for synthesizing trans polydiene rubber 失效
公开(公告)号：US06608154B2
公开(公告)日：2003-08-19
申请号：US10178493
申请日：2002-06-24
申请人： Adel Farhan Halasa , Wen-Liang Hsu , Laurie Elizabeth Austin , Chad Aaron Jasiunas
发明人： Adel Farhan Halasa , Wen-Liang Hsu , Laurie Elizabeth Austin , Chad Aaron Jasiunas
IPC分类号： C08F450
CPC分类号： C08F136/06 , C08F4/50 , C08F4/48
摘要： The process and catalyst system of this invention can be utilized to synthesize polybutadiene rubber having a high trans content and a low melting point by solution polymerization. The trans-polybutadiene rubber made by the process of this invention can be utilized in tire tread rubbers that exhibit outstanding wear characteristics. More importantly, the trans-polybutadiene rubber of this invention can be easily processed because of its low level of crystallinity. In fact, the trans-polybutadiene made by the process of this invention does not need to be heated in a “hot-house” before being used in making rubber compounds. The process and catalyst system of this invention can also be used in the synthesis of trans-styrene-butadiene rubber (SBR). This invention more specifically reveals a process for synthesizing trans-polybutadiene rubber which comprises polymerizing 1,3-butadiene in an organic solvent in the presence of a catalyst system which comprises (a) an organolithium compound, (b) a barium compound selected from the group consisting of (i) barium salts of cyclic alcohols, such as barium mentholate, and (ii) barium thymol, and (c) an organoaluminum compound.

9. 发明授权

US6103842A Process and catalyst system for synthesizing random trans SBR with low vinyl microstructure 失效
标题翻译：用于合成具有低乙烯基显微组织的随机反式SBR的工艺和催化剂体系
公开(公告)号：US6103842A
公开(公告)日：2000-08-15
申请号：US72492
申请日：1998-05-04
申请人： Adel Farhan Halasa , Wen-Liang Hsu , Laurie Elizabeth Austin
发明人： Adel Farhan Halasa , Wen-Liang Hsu , Laurie Elizabeth Austin
IPC分类号： B60C1/00 , C08F4/54 , C08F4/56 , C08F236/10 , C08F4/50 , C08F36/06
CPC分类号： C08F236/10 , C08F4/565
摘要： The process and catalyst system of this invention can be utilized to synthesize a highly random styrene-butadiene rubber having a high trans content by solution polymerization. The styrene-butadiene rubber made by the process of this invention can be utilized in tire tread rubbers that exhibit improved wear characteristics. This invention more specifically reveals a catalyst system for use in exothermal polymerizations which consists essentially of (a) an organolithium compound, (b) a barium alkoxide and (c) a lithium alkoxide. The subject invention further discloses a process for synthesizing a random styrene-butadiene rubber having a low vinyl content by a process which comprises copolymerizing styrene and 1,3-butadiene under isothermal conditions in an organic solvent in the presence of a catalyst system which consists essentially of (a) an organolithium compound, (b) a barium alkoxide and (c) a lithium alkoxide.
摘要翻译：本发明的方法和催化剂体系可用于通过溶液聚合合成具有高反式含量的高度无规的苯乙烯 - 丁二烯橡胶。通过本发明方法制备的苯乙烯 - 丁二烯橡胶可用于表现出改善的磨损特性的轮胎胎面橡胶。本发明更具体地揭示了一种用于放热聚合的催化剂体系，其基本上由（a）有机锂化合物，（b）烷氧基钡和（c）醇盐锂组成。本发明还公开了一种合成具有低乙烯基含量的无规苯乙烯 - 丁二烯橡胶的方法，该方法包括在等温条件下在有机溶剂中在催化剂体系存在下共聚苯乙烯和1,3-丁二烯的方法，所述催化剂体系基本上组成（a）有机锂化合物，（b）钡醇盐和（c）醇锂。

10. 发明授权

US5686530A Tire tread compound 失效
标题翻译：轮胎胎面复合
公开(公告)号：US5686530A
公开(公告)日：1997-11-11
申请号：US782841
申请日：1997-01-13
申请人： Adel Farhan Halasa , David John Zanzig , Wen-Liang Hsu , Paul Harry Sandstrom , Laurie Elizabeth Austin
发明人： Adel Farhan Halasa , David John Zanzig , Wen-Liang Hsu , Paul Harry Sandstrom , Laurie Elizabeth Austin
IPC分类号： B60C1/00 , C08L9/00 , C08L21/00 , C08L53/00 , C08L53/02 , C08L52/03 , C08F297/04
CPC分类号： C08L21/00 , B60C1/0016 , C08F297/04 , C08L53/00 , C08L9/00 , C08L9/06
摘要： The subject invention discloses a pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of (a) an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has essentially one glass transition temperature which is within the range of about -100.degree. C. to about -70.degree. C., wherein said isoprene-butadiene diblock polymer has a Mooney ML-4 viscosity at 100.degree. C. which is within the range of about 50 to about 140, wherein the repeat units derived from isoprene and 1,3-butadiene in the isoprene-butadiene block are in essentially random order, and wherein said isoprene-butadiene diblock polymer does not contain any blocks which are derived solely from isoprene; and (b) a second rubber selected from the group consisting of high vinyl polybutadiene rubber, styrene-isoprene-butadiene rubber, solution styrene-butadiene rubber and emulsion styrene-butadiene rubber.
摘要翻译：本发明公开了一种具有外周胎面的充气轮胎，其中所述胎面是由（a）异戊二烯 - 丁二烯二嵌段橡胶组成的硫固化橡胶组合物，所述异戊二烯 - 丁二烯二嵌段橡胶由丁二烯嵌段和异戊二烯 - 丁二烯嵌段，其中所述丁二烯嵌段的数均分子量在约25,000至约350,000的范围内，其中所述异戊二烯 - 丁二烯嵌段的数均分子量在约25,000至约350,000的范围内，其中所述异戊二烯 - 丁二烯二嵌段橡胶具有基本上一个玻璃化转变温度，其在约-100℃至约-70℃的范围内，其中所述异戊二烯 - 丁二烯二嵌段聚合物在100℃下具有门尼ML-4粘度其在约50至约140的范围内，其中衍生自异戊二烯和1,3-丁二烯在异戊二烯 - 丁二烯嵌段中的重复单元基本上是随机的并且其中所述异戊二烯 - 丁二烯二嵌段聚合物不包含仅由异戊二烯衍生的任何嵌段; 和（b）选自高乙烯基聚丁二烯橡胶，苯乙烯 - 异戊二烯 - 丁二烯橡胶，溶剂苯乙烯 - 丁二烯橡胶和乳液丁苯橡胶的第二橡胶。

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