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1. 发明授权

US5798408A Tire tread of coupled SIBR 失效
标题翻译：耦合SIBR轮胎胎面
公开(公告)号：US5798408A
公开(公告)日：1998-08-25
申请号：US811629
申请日：1997-03-05
申请人： David John Zanzig , Wen-Liang Hsu , Adel Farhan Halasa , Barry Allen Matrana
发明人： David John Zanzig , Wen-Liang Hsu , Adel Farhan Halasa , Barry Allen Matrana
IPC分类号： B60C1/00 , C08F236/10 , C08L9/00 , C08L53/00
CPC分类号： C08F236/10 , B60C1/0016 , C08L9/00 , C08K3/36 , C08L7/00 , C08L9/06 , Y10S156/91 , Y10T152/10495
摘要： This invention relates to a tire having a tread composed of quantitatively silica reinforced rubber composition, with a minor amount, if any, of carbon black where the tread elastomers are primarily composed of coupled styrene/isoprene/butadiene terpolymer with tin or silicon in combination with selected diene-based elastomers.
摘要翻译：本发明涉及一种具有由定量二氧化硅增强橡胶组合物构成的胎面的轮胎，其中少量（如果有的话）为炭黑，其中胎面弹性体主要由与锡或硅组合的苯乙烯/异戊二烯/丁二烯三元共聚物组合，选择的二烯基弹性体。

2. 发明授权

US6043321A Asymmetrical tin-coupled rubbery polymers 失效
标题翻译：不对称锡偶联橡胶聚合物
公开(公告)号：US6043321A
公开(公告)日：2000-03-28
申请号：US8716
申请日：1998-01-19
申请人： Adel Farhan Halasa , Shingo Futamura , Wen-Liang Hsu , Barry Allen Matrana
发明人： Adel Farhan Halasa , Shingo Futamura , Wen-Liang Hsu , Barry Allen Matrana
IPC分类号： B60C1/00 , C08C19/44 , C08F8/00 , C08F236/04 , C08F297/02 , C08F297/04 , C08F8/30 , C08C19/00 , C08C19/02 , C08F293/00
CPC分类号： C08C19/44 , C08F236/04 , C08F297/023 , C08F297/044 , C08F297/046
摘要： Tire rubbers which are prepared by anionic polymerization are frequently coupled with a suitable coupling agent, such as a tin halide, to improve desired properties. It has been unexpectedly found that greatly improved properties for tire rubbers, such as lower hysteresis, can be attained by asymmetrically coupling the rubber. This invention more specifically discloses an asymmetrical tin-coupled rubbery polymer which is particularly valuable for use in manufacturing tire tread compounds, said asymmetrical tin-coupled rubbery polymer being comprised of a tin atom having at least three polydiene arms covalently bonded thereto, wherein at least one of said polydiene arms has a number average molecular weight of less than about 40,000, wherein at least one of said polydiene arms has a number average molecular weight of at least about 80,000, and wherein the ratio of the weight average molecular weight to the number average molecular weight of the asymmetrical tin-coupled rubbery polymer is within the range of about 2 to about 2.5.
摘要翻译：通过阴离子聚合制备的轮胎橡胶通常与合适的偶合剂如卤化锡偶联，以改善所需的性能。已经意外地发现，通过不对称地连接橡胶，可以获得轮胎橡胶的较大改善的性能，例如较低的滞后。本发明更具体地公开了一种非对称锡 - 偶联橡胶状聚合物，其特别有价值地用于制造轮胎胎面胶料，所述不对称锡 - 偶联橡胶状聚合物由具有至少三个与其共价结合的聚二烯臂的锡原子组成，其中至少所述聚二烯臂之一具有小于约40,000的数均分子量，其中所述聚二烯臂中的至少一个具有至少约80,000的数均分子量，并且其中重均分子量与数不对称锡 - 偶联橡胶状聚合物的平均分子量在约2至约2.5的范围内。

3. 发明授权

US06420484B1 Asymmetrical tin-coupled rubbery polymers 失效
标题翻译：不对称锡偶联橡胶聚合物
公开(公告)号：US06420484B1
公开(公告)日：2002-07-16
申请号：US09968464
申请日：2001-10-01
申请人： Wen-Liang Hsu , Adel Farhan Halasa , Barry Allen Matrana
发明人： Wen-Liang Hsu , Adel Farhan Halasa , Barry Allen Matrana
IPC分类号： C08F842
CPC分类号： C08C19/44
摘要： Tire rubbers which are prepared by anionic polymerization are frequently coupled with a suitable coupling agent, such as a tin halide, to improve desired properties. It has been unexpectedly found that greatly improved properties for tire rubbers, such as lower hysteresis, can be attained by asymmetrically coupling the rubber. This invention more specifically discloses an asymmetrical tin-coupled rubbery polymer which is particularly valuable for use in manufacturing tire tread compounds, said asymmetrical tin-coupled rubbery polymer being comprised of a tin atom having at least three polydiene arms covalently bonded thereto, wherein said polydiene arms have a weight average molecular weight which is within the range of about 80,000 to about 300,000, wherein the polydiene arms do not contain blocks of more than about 4 repeat units of vinyl aromatic monomers, and wherein the ratio of the weight average molecular weight to the number average molecular weight of the asymmetrical tin-coupled rubbery polymer is within the range of about 1.4 to about 2.0.
摘要翻译：通过阴离子聚合制备的轮胎橡胶通常与合适的偶合剂如卤化锡偶联，以改善所需的性能。已经意外地发现，通过不对称地连接橡胶，可以获得轮胎橡胶的较大改善的性能，例如较低的滞后。本发明更具体地公开了一种非对称锡 - 偶联橡胶状聚合物，其特别有价值地用于制造轮胎胎面胶料，所述不对称锡 - 偶联橡胶状聚合物由具有共价键合至少三个聚二烯臂的锡原子组成，其中所述聚二烯臂的重均分子量在约80,000至约300,000的范围内，其中聚二烯臂不含有大于约4个重复单元的乙烯基芳族单体的嵌段，并且其中重均分子量与不对称锡偶联橡胶状聚合物的数均分子量在约1.4至约2.0的范围内。

4. 发明授权

US06271317B1 Asymmetrical tin-coupled rubbery polymers, and method of making 失效
标题翻译：不对称锡偶联橡胶聚合物及其制备方法
公开(公告)号：US06271317B1
公开(公告)日：2001-08-07
申请号：US09441179
申请日：1999-11-15
申请人： Adel Farhan Halasa , Shingo Futamura , Wen-Liang Hsu , Barry Allen Matrana
发明人： Adel Farhan Halasa , Shingo Futamura , Wen-Liang Hsu , Barry Allen Matrana
IPC分类号： C08F830
CPC分类号： C08C19/44 , C08F236/04 , C08F297/023 , C08F297/044 , C08F297/046 , C08F4/48
摘要： Tire rubbers which are prepared by anionic polymerization are frequently coupled with a suitable coupling agent, such as a tin halide, to improve desired properties. It has been unexpectedly found that greatly improved properties for tire rubbers, such as lower hysteresis, can be attained by asymmetrically coupling the rubber. This invention more specifically discloses an asymmetrical tin-coupled rubbery polymer which is particularly valuable for use in manufacturing tire tread compounds, said asymmetrical tin-coupled rubbery polymer being comprised of a tin atom having at least three polydiene arms covalently bonded thereto, wherein at least one of said polydiene arms has a number average molecular weight of less than about 40,000, wherein at least one of said polydiene arms has a number average molecular weight of at least about 80,000, and wherein the ratio of the weight average molecular weight to the number average molecular weight of the asymmetrical tin-coupled rubbery polymer is within the range of about 2 to about 2.5.
摘要翻译：通过阴离子聚合制备的轮胎橡胶通常与合适的偶合剂如卤化锡偶联，以改善所需的性能。已经意外地发现，通过不对称地连接橡胶，可以获得轮胎橡胶的较大改善的性能，例如较低的滞后。本发明更具体地公开了一种非对称锡 - 偶联橡胶状聚合物，其特别有价值用于制造轮胎胎面胶料，所述不对称锡 - 偶联橡胶状聚合物由具有共价键合至少三个聚二烯臂的锡原子组成，其中至少所述聚二烯臂之一具有小于约40,000的数均分子量，其中所述聚二烯臂中的至少一个具有至少约80,000的数均分子量，并且其中重均分子量与数不对称锡 - 偶联橡胶状聚合物的平均分子量在约2至约2.5的范围内。

5. 发明授权

US6017988A Tire tread compositions containing asymmetrically tin-coupled polybutadiene rubber and silica coupling agent 失效
标题翻译：含有不对称锡偶联聚丁二烯橡胶和二氧化硅偶联剂的轮胎胎面组合物
公开(公告)号：US6017988A
公开(公告)日：2000-01-25
申请号：US366236
申请日：1999-08-03
申请人： Edward John Blok , Paul Harry Sandstrom , Cheryl Ann Losey , Adel Farhan Halasa , Wen-Liang Hsu , David John Zanzig , John Joseph Andre Verthe
发明人： Edward John Blok , Paul Harry Sandstrom , Cheryl Ann Losey , Adel Farhan Halasa , Wen-Liang Hsu , David John Zanzig , John Joseph Andre Verthe
IPC分类号： B60C1/00 , C08C19/44 , C08J3/26 , C08K5/548 , C08L7/00 , C08L9/00 , C08L15/00 , C08L21/00 , C08K3/04 , C08K3/36
CPC分类号： C08L15/00 , B60C1/0016 , C08C19/44 , C08K5/548 , C08L15/005 , C08L21/00 , C08L7/00 , C08L9/00
摘要： This invention relates to a tire tread compound that is easily processable which can be used to improve the treadwear, rolling resistance and traction characteristics of tires. The tire tread compounds of this invention are a blend of tin-coupled polybutadiene, high vinyl polybutadiene and natural rubber. This blend of low glass transition temperature rubber and high glass transition temperature rubber is surprisingly easy to process which makes the concept of this invention commercially feasible. Thus, the tire tread compounds of this invention can be utilized in making tires having greatly improved traction characteristics and treadwear without sacrificing rolling resistance. These improved properties may be due, in part, to better interaction and compatibility with carbon black and/or silica fillers. The polybutadiene in the blend can be asymmetrical tin-coupled to further improve the cold flow characteristics of the rubber blend. Asymmetrical tin coupling in general also leads to better processability and other beneficial properties. This invention more specifically discloses a tire tread rubber composition which is comprised of (1) from about 20 phr to about 60 phr of tin-coupled polybutadiene rubber, (2) from about 20 phr to about 60 phr of a rubber selected from the group consisting of natural rubber and synthetic polyisoprene and (3) from about 5 phr to about 40 phr of high vinyl polybutadiene rubber.
摘要翻译：本发明涉及一种易于加工的轮胎胎面胶，其可用于改善轮胎的胎面磨损，滚动阻力和牵引特性。本发明的轮胎胎面胶料是锡偶合的聚丁二烯，高乙烯基聚丁二烯和天然橡胶的混合物。这种低玻璃化转变温度橡胶和高玻璃化转变温度橡胶的混合物令人惊奇地易于加工，这使得本发明的概念在商业上可行。因此，本发明的轮胎胎面胶料可用于制造具有极大改善的牵引特性和胎面磨损的轮胎，而不会牺牲滚动阻力。这些改进的性质可能部分是由于与炭黑和/或二氧化硅填料的更好的相互作用和相容性。共混物中的聚丁二烯可以是不对称的锡偶联，以进一步改善橡胶共混物的冷流特性。不对称锡偶联一般也会导致更好的加工性能和其他有益的性能。本发明更具体地公开了一种轮胎胎面橡胶组合物，其包含（1）约20phr至约60phr的锡偶联的聚丁二烯橡胶，（2）约20phr至约60phr的选自下组的橡胶：由天然橡胶和合成聚异戊二烯组成，（3）约5phr至约40phr的高乙烯基聚丁二烯橡胶。

6. 发明授权

US6084022A Tire tread compositions containing asymmetrically tin-coupled polybutadiene rubber 失效
标题翻译：含有不对称锡偶联聚丁二烯橡胶的轮胎胎面组合物
公开(公告)号：US6084022A
公开(公告)日：2000-07-04
申请号：US935172
申请日：1997-09-22
申请人： Edward John Blok , Paul Harry Sandstrom , Cheryl Ann Losey , Adel Farhan Halasa , Wen-Liang Hsu , David John Zanzig , John Joseph Andre Verthe
发明人： Edward John Blok , Paul Harry Sandstrom , Cheryl Ann Losey , Adel Farhan Halasa , Wen-Liang Hsu , David John Zanzig , John Joseph Andre Verthe
IPC分类号： B60C1/00 , C08C19/44 , C08J3/26 , C08K5/548 , C08L7/00 , C08L9/00 , C08L15/00 , C08L21/00 , C08K3/36
CPC分类号： C08L15/00 , B60C1/0016 , C08C19/44 , C08K5/548 , C08L15/005 , C08L21/00 , C08L7/00 , C08L9/00
摘要： This invention relates to a tire tread compound that is easily processable which can be used to improve the treadwear, rolling resistance and traction characteristics of tires. The tire tread compounds of this invention are a blend of tin-coupled polybutadiene, high vinyl polybutadiene and natural rubber. This blend of low glass transition temperature rubber and high glass transition temperature rubber is surprisingly easy to process which makes the concept of this invention commercially feasible. Thus, the tire tread compounds of this invention can be utilized in making tires having greatly improved traction characteristics and treadwear without sacrificing rolling resistance. These improved properties may be due, in part, to better interaction and compatibility with carbon black and/or silica fillers. The polybutadiene in the blend can be asymmetrical tin-coupled to further improve the cold flow characteristics of the rubber blend. Asymmetrical tin coupling in general also leads to better processability and other beneficial properties. This invention more specifically discloses a tire tread rubber composition which is comprised of (1) from about 20 phr to about 60 phr of tin-coupled polybutadiene rubber, (2) from about 20 phr to about 60 phr of a rubber selected from the group consisting of natural rubber and synthetic polyisoprene and (3) from about 5 phr to about 40 phr of high vinyl polybutadiene rubber.
摘要翻译：本发明涉及一种易于加工的轮胎胎面胶，其可用于改善轮胎的胎面磨损，滚动阻力和牵引特性。本发明的轮胎胎面胶料是锡偶合的聚丁二烯，高乙烯基聚丁二烯和天然橡胶的混合物。这种低玻璃化转变温度橡胶和高玻璃化转变温度橡胶的混合物令人惊奇地易于加工，这使得本发明的概念在商业上可行。因此，本发明的轮胎胎面胶料可用于制造具有极大改善的牵引特性和胎面磨损的轮胎，而不会牺牲滚动阻力。这些改进的性质可能部分是由于与炭黑和/或二氧化硅填料的更好的相互作用和相容性。共混物中的聚丁二烯可以是不对称的锡偶联，以进一步改善橡胶共混物的冷流特性。不对称锡偶联一般也会导致更好的加工性能和其他有益的性能。本发明更具体地公开了一种轮胎胎面橡胶组合物，其包含（1）约20phr至约60phr的锡偶联的聚丁二烯橡胶，（2）约20phr至约60phr的选自下组的橡胶：由天然橡胶和合成聚异戊二烯组成，（3）约5phr至约40phr的高乙烯基聚丁二烯橡胶。

7. 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。

8. 发明授权

US5654384A Process for preparing high vinyl polbutadiene rubber 失效
标题翻译：制备高乙烯基聚丁二烯橡胶的方法
公开(公告)号：US5654384A
公开(公告)日：1997-08-05
申请号：US622272
申请日：1996-03-27
申请人： Adel Farhan Halasa , Wen-Liang Hsu , David John Zanzig , Paul Harry Sandstrom , Steven Kristofer Henning , Danielle Lucas
发明人： Adel Farhan Halasa , Wen-Liang Hsu , David John Zanzig , Paul Harry Sandstrom , Steven Kristofer Henning , Danielle Lucas
IPC分类号： B60C1/00 , C08F2/38 , C08F2/44 , C08F4/48 , C08F36/00 , C08F36/04 , C08F36/06 , C08F136/06 , C08L9/00 , C08L21/00
CPC分类号： C08F36/04 , C08F136/06 , C08L9/00 , C08K5/06 , C08K5/17 , Y10S152/905
摘要： This invention reveals a process for preparing high vinyl polybutadiene rubber which comprises polymerizing 1,3-butadiene monomer with a lithium initiator at a temperature which is within the range of about 5.degree. C. to about 100.degree. in the presence of a sodium alkoxide and a polar modifier, wherein the molar ratio of the sodium alkoxide to the polar modifier is within the range of about 0.1:1 to about 10:1; and wherein the molar ratio of the sodium alkoxide to the lithium initiator is within the range of about 0.05:1 to about 10:1.
摘要翻译：本发明揭示了一种制备高乙烯基聚丁二烯橡胶的方法，其包括在醇钠存在下，在约5℃至约100℃的温度范围内使锂引发剂聚合1,3-丁二烯单体，以及极性改性剂，其中烷氧基钠与极性改性剂的摩尔比在约0.1:1至约10:1的范围内; 并且其中所述醇钠与所述锂引发剂的摩尔比在约0.05:1至约10:1的范围内。

9. 发明授权

US6025430A Tire tread compositions containing asymmetrically tin-coupled polybutadiene rubber 失效
公开(公告)号：US6025430A
公开(公告)日：2000-02-15
申请号：US388491
申请日：1999-09-02
申请人： Edward John Blok , Paul Harry Sandstrom , Cheryl Ann Losey , Adel Farhan Halasa , Wen-Liang Hsu , David John Zanzig , John Joseph Andre Verthe
发明人： Edward John Blok , Paul Harry Sandstrom , Cheryl Ann Losey , Adel Farhan Halasa , Wen-Liang Hsu , David John Zanzig , John Joseph Andre Verthe
IPC分类号： B60C1/00 , C08C19/44 , C08J3/26 , C08K5/548 , C08L7/00 , C08L9/00 , C08L15/00 , C08L21/00 , C08K3/36
CPC分类号： C08L15/00 , B60C1/0016 , C08C19/44 , C08K5/548 , C08L15/005 , C08L21/00 , C08L7/00 , C08L9/00
摘要： This invention relates to a tire tread compound that is easily processable which can be used to improve the treadwear, rolling resistance and traction characteristics of tires. The tire tread compounds of this invention are a blend of tin-coupled polybutadiene, high vinyl polybutadiene and natural rubber. This blend of low glass transition temperature rubber and high glass transition temperature rubber is surprisingly easy to process which makes the concept of this invention commercially feasible. Thus, the tire tread compounds of this invention can be utilized in making tires having greatly improved traction characteristics and treadwear without sacrificing rolling resistance. These improved properties may be due, in part, to better interaction and compatibility with carbon black and/or silica fillers. The polybutadiene in the blend can be asymmetrical tin-coupled to further improve the cold flow characteristics of the rubber blend. Asymmetrical tin coupling in general also leads to better processability and other beneficial properties. This invention more specifically discloses a tire tread rubber composition which is comprised of (1) from about 20 phr to about 60 phr of tin-coupled polybutadiene rubber, (2) from about 20 phr to about 60 phr of a rubber selected from the group consisting of natural rubber and synthetic polyisoprene and (3) from about 5 phr to about 40 phr of high vinyl polybutadiene rubber.

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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