公开(公告)号：US5929149A

公开(公告)日：1999-07-27

申请号：US990736

申请日：1997-12-15

Applicant: Toshiro Matsuo ,  Hayato Saba

Inventor： Toshiro Matsuo ,  Hayato Saba

IPC: B60C1/00 ,  C08C19/44 ,  C08G77/442 ,  C08K3/04 ,  C08K3/36 ,  C08K5/54 ,  C08L9/00 ,  C08L9/06 ,  C08L15/00 ,  C08L83/10 ,  C08K5/24

CPC classification number: C08L15/00 ,  C08C19/44 ,  C08G77/442 ,  C08K3/04 ,  C08K3/36

Abstract: A rubber composition for a tire tread includes an organosiloxane-modified diene polymer or a blend of the organosiloxane-modified diene polymer with another diene polymer and a silica or a mixture of the silica and carbon black, the organosiloxane-modified diene polymer being obtained by (a) polymerizing a diene monomer alone or a mixture of the diene monomer and aromatic vinyl monomer by the use of an alkali metal-containing polymerization initiator in a hydrocarbon solvent to give a diene polymer having an alkali metal-containing active end, and (b) reacting the alkali metal-containing active end of the diene polymer with an organosiloxane having at least one functional group selected from epoxy, alkoxyl, carbonyl, vinyl, chloro, bromo and iodo groups. The rubber composition for a tire tread is superior in processability and has both low rolling resistance and high wet-skid resistance by employing a decreased amount of a silane coupling agent.

Abstract translation: 用于轮胎胎面的橡胶组合物包括有机硅氧烷改性的二烯聚合物或有机硅氧烷改性的二烯聚合物与另一种二烯聚合物和二氧化硅或二氧化硅和炭黑的混合物的共混物，有机硅氧烷改性的二烯聚合物由 （a）通过在烃类溶剂中使用含碱金属的聚合引发剂使二烯单体单独或二烯单体和芳香族乙烯基单体的混合物聚合，得到具有含碱金属的活性末端的二烯系聚合物和（ b）使二烯聚合物的含碱金属的活性端与具有至少一个选自环氧基，烷氧基，羰基，乙烯基，氯，溴和碘基的官能团的有机硅氧烷反应。 轮胎胎面用橡胶组合物的加工性优异，通过使用少量的硅烷偶联剂，具有低滚动阻力和高耐湿滑性。

公开(公告)号：US6087424A

公开(公告)日：2000-07-11

申请号：US614931

申请日：1996-03-11

Applicant: Keisaku Yamamoto ,  Kizuku Wakatsuki ,  Hayato Saba

Inventor： Keisaku Yamamoto ,  Kizuku Wakatsuki ,  Hayato Saba

IPC: C08K5/5419 ,  C08K5/548 ,  C08L21/00 ,  C08J5/24

CPC classification number: C08K5/5419 ,  C08K5/548 ,  C08L21/00 ,  C08L9/00 ,  C08L9/06

Abstract: A rubber composition obtained by kneading a mixture comprising 100 parts by weight of a solution polymerized diene rubber, 5-100 parts by weight of silica, 1-15 parts by weight of a silane coupling agent, and 1-20 parts by weight of an organic silicon compound having a number average molecular weight of about 100-10,000, and maintaining the temperature during the kneading at 200.degree. C. or less. The composition is excellent in wear resistance and productivity, has lower rolling resistance and is useful, for example, for automobile tires.

Abstract translation: 将由100重量份溶液聚合二烯橡胶，5-100重量份二氧化硅，1-15重量份硅烷偶联剂和1-20重量份的二氧化硅的混合物 数均分子量为100〜10000左右的有机硅化合物，将混炼过程中的温度保持在200℃以下。 该组合物的耐磨性和生产率优异，具有较低的滚动阻力，并且可用于例如汽车轮胎。

公开(公告)号：US5703151A

公开(公告)日：1997-12-30

申请号：US632798

申请日：1996-04-17

Applicant: Keisaku Yamamoto ,  Kizuku Wakatsuki ,  Hayato Saba

Inventor： Keisaku Yamamoto ,  Kizuku Wakatsuki ,  Hayato Saba

IPC: C08K3/36 ,  C08L21/00 ,  C08K5/24

CPC classification number: C08K3/36 ,  C08L21/00 ,  C08L9/00 ,  C08L9/06

Abstract: Provided is a rubber composition obtainable by kneading a mixture at a maximum temperature between about 120.degree. to about 170.degree. C. The mixture includes: 100 parts by weight of a solution polymerized diene rubber; about 5 to about 100 parts by weight of silica; about 1 to about 15 parts by weight of a silane coupling agent; and about 1 to about 15 parts by weight of a polyalkylene glycol having a weight average molecular weight of about 200 to about 20,000. The invention also provides a method for making the rubber composition, a tire tread made from the rubber composition, and a tire made from the rubber composition.

Abstract translation: 提供一种橡胶组合物，其通过在约120℃至约170℃的最高温度下捏合混合物获得。该混合物包括：100重量份的溶液聚合的二烯橡胶; 约5至约100重量份的二氧化硅; 约1至约15重量份的硅烷偶联剂; 和约1至约15重量份的重均分子量为约200至约20,000的聚亚烷基二醇。 本发明还提供了一种制造橡胶组合物的方法，由橡胶组合物制成的轮胎胎面和由橡胶组合物制成的轮胎。

公开(公告)号：US5516862A

公开(公告)日：1996-05-14

申请号：US300550

申请日：1994-09-07

Applicant: Keisaku Yamamoto ,  Kizuku Wakatsuki ,  Hayato Saba ,  Tadaaki Nishiyama

Inventor： Keisaku Yamamoto ,  Kizuku Wakatsuki ,  Hayato Saba ,  Tadaaki Nishiyama

IPC: C08F2/06 ,  C08F210/18 ,  C08F4/20

CPC classification number: C08F210/18

Abstract: A process for producing ethylene-.alpha.-olefin copolymer rubbers which comprises mixing a vanadium compound-containing solution and an alcohol-containing solution with stirring for 10-600 seconds to obtain a mixed solution, immediately feeding the mixed solution into a polymerization vessel containing an organoaluminum compound, and copolymerizing ethylene and an .alpha.-olefin, or ethylene, an .alpha.-olefin and a non-conjugated diene compound in the polymerization vessel. According to this process, the activity of polymerization catalyst can be maintained at a high level, no by-product of the reaction of the vanadium compound and the alcohol is deposited as precipitate in the apparatus and no such additional operations as bubbling is necessary.

Abstract translation: 一种生产乙烯-α-烯烃共聚物橡胶的方法，其包括将含钒化合物的溶液和含醇溶液在搅拌下混合10-600秒以获得混合溶液，立即将混合溶液进料到含有 有机铝化合物，以及在聚合容器中共聚乙烯和α-烯烃，或乙烯，α-烯烃和非共轭二烯化合物。 根据该方法，可以将聚合催化剂的活性保持在高水平，不将钒化合物与醇反应的副产物作为沉淀物沉积在设备中，并且不需要如鼓泡的附加操作。

公开(公告)号：US5122493A

公开(公告)日：1992-06-16

申请号：US675823

申请日：1991-03-27

Applicant: Hayato Saba ,  Keisaku Yamamoto ,  Akio Imai ,  Kiyoyuki Sugimori ,  Kizuku Wakatsuki

Inventor： Hayato Saba ,  Keisaku Yamamoto ,  Akio Imai ,  Kiyoyuki Sugimori ,  Kizuku Wakatsuki

IPC: C08F4/60 ,  C08F4/68 ,  C08F10/00

CPC classification number: C08F10/00

Abstract: An inert hydrocarbon solvent-soluble catalyst for polymerization of olefinic hydrocarbons and a process for producing an olefinic polymer using the same are disclosed, the catalyst being composed of (A) a reaction product obtained by reacting (a) at least one vanadium compound represented by formula:VO(OR).sub.m X.sub.3-mwherein R represents a hydrocarbon group; X represents a halogen atom; and m represents a real number of from 0 to 3, and (b) a dihydroxy hydrocarbon compound constituted of a straight chain hydrocarbon skeleton containing from 2 to 12 carbon atoms and having a hydroxyl group at each of both terminals thereof and at least one hydrocarbon branch bonded to said hydrocarbon skeleton in an inert hydrocarbon solvent at an (a) to (b) molar ratio of from 1:0.5 to 1:1.4 and (B) at least one organoaluminum compound represented by formula:R'.sub.n AlX'.sub.3-nwherein R' represents a hydrocarbon group X' represents a halogen atom; and n represents a real number more than 0 and less than 3. Olefinic hydrocarbon polymers having narrow distributions of molecular weight and composition can be produced with high efficiency and high polymerization activity without being accompanied by obstruction or contamination of equipment due to precipitation of a catalyst.

公开(公告)号：US5245007A

公开(公告)日：1993-09-14

申请号：US805651

申请日：1991-12-12

Applicant: Keisaku Yamamoto ,  Kizuku Wakatsuki ,  Kiyoyuki Sugimori ,  Hayato Saba ,  Katsunari Inagaki

Inventor： Keisaku Yamamoto ,  Kizuku Wakatsuki ,  Kiyoyuki Sugimori ,  Hayato Saba ,  Katsunari Inagaki

IPC: C08F6/02

CPC classification number: C08F6/02

Abstract: A method for purifying an ethylene-.alpha.-olefin olefin having at least 3 carbon atoms, or ethylene with an .alpha.-olefin having at least 3 carbon atoms and a nonconjugated diene compound, in a hydrocarbon solvent in the presence of a catalyst comprising a vanadium compound, an organoaluminum compound, and a halogenated ester compound, the method including a step of mixing and stirring the polymerization reaction mixture obtained by the polymerization reaction in an aqueous alkaline solution in such an amount as to give an aqueous phase having a pH of not lower than 10.0 after mixing and stirring, is disclosed. A method for purifying an ethylene-.alpha.-olefin copolymer is also disclosed, including a step of an oxidation treatment of the polymerization reaction mixture in an aqueous alkaline solution in such an amount as to give an aqueous phase having a pH of not lower than 10.0 after the oxidation treatment.

公开(公告)号：US5191041A

公开(公告)日：1993-03-02

申请号：US821037

申请日：1992-01-16

Applicant: Hayato Saba ,  Keisaku Yamamoto ,  Akio Imai ,  Kiyoyuki Sugimori ,  Kizuku Wakatsuki

Inventor： Hayato Saba ,  Keisaku Yamamoto ,  Akio Imai ,  Kiyoyuki Sugimori ,  Kizuku Wakatsuki

IPC: C08F10/00

CPC classification number: C08F10/00

Abstract: An inert hydrocarbon solvent-soluble catalyst for polymerization of olefinic hydrocarbons and a process for producing an olefinic polymer using the same are disclosed, the catalyst being composed of (A) a reaction product obtained by reacting (a) at least one vanadium compound represented by formula:VO(OR).sub.m X.sub.3-mwherein R represents a hydrocarbon group; X represents a halogen atom; and m represents a real number of from 0 to 3, and (b) a dihydroxy hydrocarbon compound constituted of a straight chain hydrocarbon skeleton containing from 2 to 12 carbon atoms and having a hydroxyl group at each of both terminals thereof and at least one hydrocarbon branch bonded to said hydrocarbon skeleton in an inert hydrocarbon solvent at an (a) to (b) molar ratio of from 1:0.5 to 1:1.4 and (B) at least one organoaluminum compound represented by formula:R'.sub.n AlX'.sub.3-nwherein R' represents a hydrocarbon group; X' represents a halogen atom; and n represents a real number more than 0 and less than 3. Olefinic hydrocarbon polymers having narrow distributions of molecular weight and composition can be produced with high efficiency and high polymerization activity without being accompanied by obstruction or contamination of equipment due to precipitation of a catalyst.

Abstract translation: 公开了一种用于烯烃聚合的惰性烃溶剂可溶性催化剂和使用其的制备烯烃聚合物的方法，该催化剂由（A）通过使（a）至少一种钒化合物 式：VO（OR）mX3-m其中R表示烃基; X表示卤原子; m表示0〜3的实数，（b）由含有2〜12个碳原子的直链烃骨架构成的二羟基烃化合物，其两末端具有羟基，至少一个烃 在（a）至（b）摩尔比为1:0.5至1:1.4的惰性烃溶剂中与所述烃骨架键合的至少一种有机铝化合物，和（B）至少一种由式：R'nAlX'3- n其中R'表示烃基; X'表示卤原子; 并且n表示大于0且小于3的实数。可以以高效率和高聚合活性生产具有窄分子量和组成分布的烯属烃聚合物，而不伴随催化剂沉淀引起的设备阻塞或污染 。