公开(公告)号：US4812527A

公开(公告)日：1989-03-14

申请号：US112989

申请日：1987-10-27

申请人： Hiroyoshi Takao ,  Nabuyuki Yoshida ,  Akio Imai ,  Mitsuji Tsuji ,  Yuichi Saito

发明人： Hiroyoshi Takao ,  Nabuyuki Yoshida ,  Akio Imai ,  Mitsuji Tsuji ,  Yuichi Saito

IPC分类号： B60C1/00 ,  C08F297/04 ,  C08L53/00 ,  C08L53/02

CPC分类号： C08F297/044 ,  B60C1/0016 ,  Y10S152/905

摘要： A rubber composition suitable for tire treads having well-balanced excellent wet skid characteristic, ice skid characteristic and rolling characteristic, and an excellent processability, which comprises a rubber component containing at least 20% by weight of a block copolymer consisting essentially of a block A and a block B, obtained by conducting polymerization of an aromatic vinyl compound and a conjugated diene compound in a hydrocarbon solvent in the presence of an organolithium initiator and modifying with a coupling agent, and satisfying the following conditions (A) to (E);(A) the block A having a content of an aromatic vinyl compound of at most 5% by weight and a content of 1,2-bonds in the conjugated diene component of at least 10% by weight,(B) the block B having a content of an aromatic vinyl compound of 25 to 50% by weight and a content of 1,2-bonds in the conjugated diene component of at least 10% by weight,(C) a content of the block A in the block copolymer being from 20 to 80% by weight,(D) a content of the aromatic vinyl compound in the block copolymer being from 5 to 30% by weight and a content of 1,2-bonds in the conjugated diene component of the block copolymer being from 20 to 60% by weight, and(E) at least 40% by weight of the polymer chains of the block copolymer being a branched polymer formed by modification with a dicarboxylic acid diester.

摘要翻译： 一种适用于轮胎胎面的橡胶组合物，具有平衡优异的湿滑特性，防滑特性和滚动特性，以及优异的加工性，其包含含有至少20重量％的基本上由块A 和通过在有机锂引发剂的存在下在烃溶剂中进行芳族乙烯基化合物和共轭二烯化合物的聚合而获得的嵌段B，并且用偶联剂进行改性，并满足以下条件（A）〜（E）; （A）具有至多5重量％的芳族乙烯基化合物含量的嵌段A和共轭二烯组分中的1,2-键的含量为至少10重量％，（B）嵌段B具有 芳香族乙烯基化合物的含量为25〜50重量％，共轭二烯成分中的1,2-键含量为10重量％以上，（C）嵌段共聚物中的嵌段A的含量为 20〜80重量％，（D）嵌段共聚物中芳香族乙烯基化合物的含量为5〜30重量％，嵌段共聚物的共轭二烯成分中的1,2-键含量为 20至60重量％，和（E）至少40重量％的嵌段共聚物的聚合物链是通过用二羧酸二酯改性形成的支化聚合物。

公开(公告)号：US4918142A

公开(公告)日：1990-04-17

申请号：US320836

申请日：1989-03-08

申请人： Yuichi Saito ,  Takuzoh Yabuta ,  Hiroyoshi Takao ,  Akio Imai ,  Mitsuji Tsuji

发明人： Yuichi Saito ,  Takuzoh Yabuta ,  Hiroyoshi Takao ,  Akio Imai ,  Mitsuji Tsuji

IPC分类号： B29D30/52 ,  B60C1/00 ,  C08F297/04 ,  C08L21/00 ,  C08L53/00 ,  C08L53/02

CPC分类号： C08L21/00 ,  B60C1/0016 ,  C08F297/044 ,  C08L53/02 ,  C08L9/06

摘要： A rubber composition suitable for tire treads having well-balanced excellent steering stability in cornering, wet skid characteristic, ice skid characteristic and rolling characteristic, and an excellent processability, which comprises a rubber component containing a block copolymer consisting essentially of a block A and a block B, obtained by conducting polymerization of an aromatic vinyl compound and a conjugated diene compound in a hydrocarbon solvent in the presence of an organolithium initiator and modifying with a coupling agent, and satisfying the following conditions (A) to (E);(A) the block A having a content of an aromatic vinyl compound of 5 to 29% by weight and a content of 1,2-bonds in the conjugated diene component of 25 to 55% by weight,(B) the block B having a content of an aromatic vinyl compound of 35 to 60% by weight and a content of 1,2-bonds in the conjugated diene component of 20 to 70% by weight,(C) the content of the block A in the block copolymer being from 20 to 80% by weight,(D) the average content of the aromatic vinyl compound in the block copolymer being from 20 to 40% by weight and the average content of 1,2-bonds in the conjugated diene component of the block copolymer being from 20 to 60% by weight, and(E) at least 40% by weight of the polymer chains of the block copolymer being a branched polymer formed by modification with a trifunctional or tetrafunctional coupling agent.

摘要翻译： 一种适用于轮胎胎面的橡胶组合物，其具有平衡优异的转弯转向稳定性，防滑特性，防滑特性和滚动特性以及优异的加工性能，其包括含有基本上由块A和 嵌段B，其通过在有机锂引发剂的存在下在烃溶剂中进行芳族乙烯基化合物和共轭二烯化合物的聚合而获得，并且用偶联剂进行改性，并满足以下条件（A）至（E）; （A）具有5〜29重量％的芳族乙烯基化合物的含量和共轭二烯组分中的1,2-键含量为25〜55重量％的嵌段A，（B）嵌段B具有 35〜60重量％的芳香族乙烯基化合物的含量和共轭二烯成分中的1,2-键含量为20〜70重量％，（C）嵌段共聚物中嵌段A的含量为 20〜80重量％，（D）嵌段共聚物中芳族乙烯基化合物的平均含量为20〜40重量％，嵌段共聚物的共轭二烯成分中的1,2-键的平均含量 为20〜60重量％，（E）嵌段共聚物的聚合物链的至少40重量％为通过三官能或四官能偶合剂改性形成的支链聚合物。

公开(公告)号：US5037891A

公开(公告)日：1991-08-06

申请号：US353756

申请日：1989-05-18

申请人： Hiroyoshi Takao ,  Akio Imai ,  Mitsuji Tsuji

发明人： Hiroyoshi Takao ,  Akio Imai ,  Mitsuji Tsuji

IPC分类号： C08F255/04 ,  C08F255/02 ,  C08F255/06

CPC分类号： C08F255/02

摘要： A modified copolymer rubber obtained by kneading at 200.degree.-280.degree. C.(A) at least one copolymer rubber material selected from the group consisting of an ethylene-.alpha.-olefin copolymer rubber having a number-average molecular weight of 10,000-100,000 and an ethylene content of 15-85% by weight and an ethylene-.alpha.-olefin-nonconjugated diene copolymer rubber having a number-average molecular weight of 10,000-100,000, an ethylene content of 15-85% by weight and a nonconjugated diene content of 3.0% by weight or less,(B) a free-radical initiator,(C) at least one vinyl aromatic monomer and(D) an unsaturated dicarboxylic anhydride, wherein the weight ratios of (B):(A), (C):(A), (D):(A) and (C):(D) are 0.005-1.0:100, 0.2-20:100, 0.5-15:100 and 0.1-3:1, respectively.The process is suited for industrially producing a modified copolymer rubber having a high bound unsaturated dicarboxylic anhydride content, a low tendency of increase of the Mooney viscosity [ML.sub.1+4 (121.degree. C.)], and an excellent moldability and storage stability without being obstructed by gel formation during the kneading. The modified copolymer rubber thus obtained can be advantageously used for thermoplastic elastomer, blending polymer adhesive etc.

摘要翻译： 通过在200〜280℃下捏合得到的改性共聚物橡胶（A）至少一种选自数均分子量为10,000-100,000的乙烯-α-烯烃共聚物橡胶和 乙烯含量为15-85％（重量），乙烯-α-烯烃 - 非共轭二烯共聚物橡胶的数均分子量为10,000-100,000，乙烯含量为15-85％（重量），非共轭二烯含量为 3.0重量％以下，（B）自由基引发剂，（C）至少一种乙烯基芳族单体和（D）不饱和二羧酸酐，其中（B）:( A），（C） ：（A），（D）：（A）和（C）:( D）分别为0.005-1.0:100,0.2-20:100,0.5-15:100和0.1-3:1。 该方法适用于工业生产具有高结合不饱和二羧酸酐含量的改性共聚物橡胶，门尼粘度[ML1 + 4（121℃）]增加的趋势低，并且具有优异的成型性和储存稳定性，而不会 在捏合期间被凝胶形成阻碍。 由此获得的改性共聚物橡胶可有利地用于热塑性弹性体，共混聚合物粘合剂等。

公开(公告)号：US5015692A

公开(公告)日：1991-05-14

申请号：US501700

申请日：1990-03-30

申请人： Hiroyoshi Takao ,  Akio Imai ,  Tomoaki Seki ,  Mitsuji Tsuji

发明人： Hiroyoshi Takao ,  Akio Imai ,  Tomoaki Seki ,  Mitsuji Tsuji

IPC分类号： C08C19/42

CPC分类号： C08C19/42

摘要： A process for preparing modified diene polymer rubbers having an increased impact resilience and a reduced hardness at low temperatures and useful as rubber materials for automobile tires and other industries which comprises producing an alkali metal-containing conjugated diene polymer, and reacting the alkali metal-containing polymer with a modifier selected from the group consisting of a nitro compound, a phosphoryl chloride compound of the formula: ##STR1## wherein R.sup.1 to R.sup.4 are independently an alkyl group, and an aminosilane compound of the formula: ##STR2## wherein R.sup.5 to R.sup.7 are independently an alkyl group or an alkoxyl group, R.sup.8 and R.sup.9 are independently an alkyl group, and n is an integer,said alkali metal-containing diene polymer being prepared by a living anionic polymerization using an alkali metal-based catalyst or by an addition reaction of a diene polymer having conjugated diene units and an alkali metal-based catalyst in a hydrocarbon solvent. The modified diene polymers can be incorporated with usual rubber additives to provide rubber compositions for various purposes, and the cured products show an increased impact resilience and a reduced hardness at low temperatures.

公开(公告)号：US4957976A

公开(公告)日：1990-09-18

申请号：US415380

申请日：1989-09-29

申请人： Hiroyoshi Takao ,  Akio Imai ,  Tomoski Seki ,  Mitsuji Tsuji

发明人： Hiroyoshi Takao ,  Akio Imai ,  Tomoski Seki ,  Mitsuji Tsuji

IPC分类号： C08C19/42

CPC分类号： C08C19/42

摘要： A process for preparing modified diene polymer rubbers having an increased impact resilience and a reduced hardness at low temperatures and useful as rubber materials for automobile tires and other industries which comprises producing an alkali metal-containing conjugated diene polymer, and reacting the alkali metal-containing polymer with a modifier selected from the group consisting of a nitro compound, a phosphoryl chloride compound of the formula: ##STR1## wherein R.sup.1 to R.sup.4 are independently an alkyl group, and an aminosilane compound of the formula: ##STR2## wherein R.sup.5 to R.sup.7 are independently an alkyl group or an alkoxyl group, R.sup.8 and R.sup.9 are independently an alkyl group, and n is an integer, said alkali metal-containing diene polymer being prepared by a living anionic polymerization using an alkali metal-based catalyst or by an addition reaction of a diene polymer having conjugated diene units and an alkali metal-based catalyst in a hydrocarbon solvent. The modified diene polymers can be incorporated with usual rubber additives to provide rubber compositions for various purposes, and the cured products shown an increased impact resilience and a reduced hardness at low temperatures.

摘要翻译： 一种制备改性二烯聚合物橡胶的方法，该改性二烯聚合物橡胶在低温下具有增加的冲击弹性和降低的硬度，并且可用作汽车轮胎和其它工业的橡胶材料，其包括制备含碱金属的共轭二烯聚合物，并使含碱金属的 聚合物，其选自硝基化合物，下式的磷酰氯化合物：其中R 1至R 4独立地为烷基，并且具有下式的氨基硅烷化合物：（IMAGE）（ 2）其中R5至R7独立地为烷基或烷氧基，R8和R9独立地为烷基，n为整数，所述含碱金属的二烯聚合物通过使用碱金属 - 或通过在烃溶剂中具有共轭二烯单元的二烯聚合物和碱金属类催化剂的加成反应。 改性二烯聚合物可与通常的橡胶添加剂结合以提供用于各种目的的橡胶组合物，并且固化产物显示了在低温下增加的冲击弹性和降低的硬度。

公开(公告)号：US4537936A

公开(公告)日：1985-08-27

申请号：US371020

申请日：1982-04-22

申请人： Hiroyoshi Takao ,  Keisaku Yamamoto ,  Akio Imai ,  Nobuyuki Yoshida ,  Hiroshi Furukawa ,  Yuichi Saito ,  Akio Okumura

发明人： Hiroyoshi Takao ,  Keisaku Yamamoto ,  Akio Imai ,  Nobuyuki Yoshida ,  Hiroshi Furukawa ,  Yuichi Saito ,  Akio Okumura

IPC分类号： B60C1/00 ,  C08F36/04 ,  C08L9/00 ,  C08L9/06

CPC分类号： C08F36/04 ,  B60C1/0016 ,  C08L9/00 ,  C08L9/06 ,  Y10S152/905

摘要： A diene rubber composition comprising 25 to 90 parts by weight of at least one high molecular weight diene rubber (A) having an intrinsic viscosity [.eta.] of at least 2.0 and a glass transition point of not lower than -50.degree. C. and 75 to 10 parts by weight of at least one low molecular weight diene rubber (B) having an intrinsic viscosity [.eta.] of 0.01 to 2.0, said composition having an average intrinsic viscosity of at least 1.8.Since this composition has an excellent wet grip and rolling resistance property and moreover has excellent processability, it is employed as tire tread rubber.

摘要翻译： 一种二烯橡胶组合物，其包含25至90重量份的至少一种特性粘度η至少为2.0且玻璃化转变点不低于-50℃的高分子量二烯橡胶（A）和75 至10重量份的至少一种特性粘度η为0.01至2.0的低分子量二烯橡胶（B），所述组合物的平均特性粘度至少为1.8。 由于该组合物具有优异的湿抓地性和滚动阻力性，而且具有优异的加工性，因此用作轮胎胎面胶。

公开(公告)号：US4436873A

公开(公告)日：1984-03-13

申请号：US477583

申请日：1983-03-21

申请人： Hiroshi Furukawa ,  Yuichi Saito ,  Akio Imai ,  Keisaku Yamamoto ,  Hiroyoshi Takao ,  Nobuyuki Yoshida

发明人： Hiroshi Furukawa ,  Yuichi Saito ,  Akio Imai ,  Keisaku Yamamoto ,  Hiroyoshi Takao ,  Nobuyuki Yoshida

IPC分类号： C08F297/00 ,  C08F136/04 ,  C08F297/02

CPC分类号： C08F297/02 ,  C08F136/04

摘要： A conjugated diene block polymer composed of blocks having a different microstructure from each other such that one block contains 20 to 60% by mole of 1,2- and/or 3,4-bonding, the other block contains 50 to 90% by mole of 1,2- and/or 3,4-bonding, the difference in the 1,2- and/or 3,4-bonding content between the both blocks is from 20 to 50% mole and the average content of 1,2- and/or 3,4-bonding in the polymer is from 50 to 85% by mole. The block polymer has a high wet skid resistance and a low dynamic heat generating property, and is very useful as a material for automobile tires.

摘要翻译： 共轭二烯嵌段聚合物由具有彼此不同微结构的嵌段组成，使得一个嵌段含有20至60摩尔％的1,2-和/或3,4-键，另一个嵌段含有50至90摩尔％ 的1,2-和/或3,4-键，两个嵌段之间的1,2-和/或3,4-键含量的差异为20-50％摩尔，平均含量为1,2 - 和/或3,4-键在聚合物中为50-85摩尔％。 嵌段聚合物具有高的抗湿滑性和低动态发热性，并且作为汽车轮胎的材料是非常有用的。

公开(公告)号：US4885338A

公开(公告)日：1989-12-05

申请号：US188326

申请日：1988-05-04

申请人： Hiroyoshi Takao ,  Akio Imai ,  Tomoaki Seki

发明人： Hiroyoshi Takao ,  Akio Imai ,  Tomoaki Seki

IPC分类号： C08C19/42

CPC分类号： C08C19/42

摘要： A process for preparing modified diene polymer rubbers having an increased impact resilience and a reduced hardness at low temperatures and useful as rubber materials for automobile tires and other industries which comprises producing an alkali metal-containing conjugated diene polymer, and reacting the alkali metal-containing polymer with a modifier selected from the group consisting of a nitroalkyl acrylate of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently an alkyl group and n is an integer, and a nitroamino compound of the formula: ##STR2## wherein R.sup.3 to R.sup.6 are independently an alkyl group, and m is an integer, said alkali metal-containing diene polymer being prepared by a living anionic polymerization using an alkali metal-based catalyst or by an addition reaction of a diene polymer having conjugated diene units and an alkali metal-based catalyst in a hydrocarbon solvent. The modified diene polymers can be incorporated with usual rubber additives to provide rubber compositions for various purposes, and the cured products show an increased impact resilience and a reduced hardness at low temperatures.

公开(公告)号：US4647614A

公开(公告)日：1987-03-03

申请号：US804843

申请日：1985-12-05

申请人： Hiroyoshi Takao ,  Nobuyuki Yoshida ,  Akio Imai

发明人： Hiroyoshi Takao ,  Nobuyuki Yoshida ,  Akio Imai

IPC分类号： C08L7/00 ,  B60C1/00 ,  C08L9/00 ,  C08L9/06 ,  C08L21/00 ,  C08K3/04 ,  C08F136/00 ,  C08L47/00

CPC分类号： C08L9/00 ,  B60C1/0016

摘要： Disclosed is a diene elastomer composition especially suitable as tread rubber of tires which has low rolling resistance and high wet grip in combination. This elastomer composition contains a rubber material comprising an elastomeric polymer component of a butadiene polymer and/or a styrene-butadiene copolymer and a rubbery component. The elastomeric polymer is produced by using an organolithium compound as a polymerization initiator, and has a long chain end concentration (LCEC) of 1.5 or less as defined by the following formula: ##EQU1## wherein .alpha.: total number of terminal groups in long chain molecules per polymer,MW: a value obtained from intrinsic viscosity of the polymer as measured in toluene at 30.degree. C. by the following formulas:MW=70,660 x[.eta.].sup.1.282 for styrene-butadiene copolymer,MW=79,167 x[.eta.].sup.1.443 for butadiene polymer,.beta.i: weight fraction of component i when MW=(MW).sub.i.

摘要翻译： 公开了一种二烯弹性体组合物，其特别适用于轮胎的胎面橡胶，其组合具有低滚动阻力和高湿抓地力。 该弹性体组合物包含橡胶材料，其包含丁二烯聚合物和/或苯乙烯 - 丁二烯共聚物的弹性体聚合物组分和橡胶组分。 弹性体聚合物通过使用有机锂化合物作为聚合引发剂制备，并且具有如下式所定义的1.5或更小的长链末端浓度（LCEC）：其中α：长链中的末端基团的总数 每个聚合物的分子，＆upbar＆M：由在30℃下在甲苯中测量的聚合物的特性粘度得到的值，通过下列公式：＆lt;＆nbsp;＆nbsp;对于苯乙烯 - 丁二烯共聚物，M = 70,660×η1.282＆amp;＆amp; M = 79,167× 丁烯聚合物的η1.443，βi：当＆upbar＆M =（＆amp; upbar＆M）时组分i的重量分数i。

公开(公告)号：US4942223A

公开(公告)日：1990-07-17

申请号：US530358

申请日：1983-09-08

申请人： Hiroyoshi Takao ,  Yoshio Inoue ,  Hirotami Yamazaki

发明人： Hiroyoshi Takao ,  Yoshio Inoue ,  Hirotami Yamazaki

IPC分类号： C08F6/00 ,  C08C2/06 ,  C08F6/12

CPC分类号： C08F6/12 ,  C08C2/06

摘要： In order to recover a polymer, such as styrene butadiene copolymer rubber, from a solution obtained by a solution polymerization of the corresponding comonomers, without degradation or deterioration of the polymer, the solution, ordinarily in 3 to 30% by weight concentration, is separated into the solvent and a more concentrated polymer solution of not less than 50% by weight, by heating the solution under a pressure at such a temperature (A) that the polymer does not decompose, heating a solvent, which is preferably the same as that for the solution, at a higher temperature than (A) above under a pressure, and joining the heated solution and the heated solvent in a mixer to convey to a flash evaporator.

摘要翻译： 为了从由相应的共聚单体的溶液聚合获得的溶液中回收聚合物如苯乙烯丁二烯共聚物橡胶，而不降解或劣化聚合物，通常将3至30重量％浓度的溶液分离 通过在聚合物不分解的温度（A）的压力下加热溶液，加热溶剂，加入溶剂，加入溶剂，加入溶剂，优选与溶剂相同 对于溶液，在比压力高于（A）的温度下，在混合器中将加热的溶液和加热的溶剂接合以输送到闪蒸器。