公开(公告)号：US4111867A

公开(公告)日：1978-09-05

申请号：US782323

申请日：1977-03-29

申请人： Keiji Komuro ,  Tetsu Ohishi ,  Tetsuo Waku ,  Nagatoshi Sugi ,  Souichi Suzuki ,  Akio Ueda

发明人： Keiji Komuro ,  Tetsu Ohishi ,  Tetsuo Waku ,  Nagatoshi Sugi ,  Souichi Suzuki ,  Akio Ueda

IPC分类号： B60C1/00 ,  C08L9/06 ,  C08L7/00

CPC分类号： B60C1/0016 ,  C08L9/06 ,  C08L7/00 ,  C08L9/00

摘要： A rubber composition for tire treads includes (Ia) an oil-extended rubber having a Mooney viscosity (ML.sub.1+4, 100.degree. C) of 20 to 70 which is prepared by adding 20 to 80 parts of a hydrocarbon oil to 100 parts by weight of a rubber terpolymer which is composed of 2 to 13% by weight of combined styrene, 15 to 70% by weight of combined 1,3-butadiene and 17 to 83% by weight of combined 1,3-pentadiene with the dienes having a total 1,4-bond content of at least 65 mole%, (II) vulcanization additives, and (III) 30 to 110 parts by weight, per 100 parts by weight of the oil-extended rubber (Ia), of a carbon black for rubber having an average particle diameter of not more than 60 m.mu. the rubbery copolymer has a glass transistion temperature of -70.degree. to -20.degree. C., and is produced by emulsion-polymerization at 0.degree. to 30.degree. C.

公开(公告)号：US3939138A

公开(公告)日：1976-02-17

申请号：US503189

申请日：1974-09-04

申请人： Souichi Suzuki ,  Hiroshi Horino ,  Tetsu Ohishi

发明人： Souichi Suzuki ,  Hiroshi Horino ,  Tetsu Ohishi

IPC分类号： C08F4/00 ,  C07C409/04 ,  C08F2/22 ,  C08F4/28 ,  C08F4/34 ,  C09F1/00

CPC分类号： C07C409/04 ,  C07C407/00 ,  C08F4/34

摘要： A radical polymerization initiator comprising as an active ingredient a hydroperoxide of disproportionated or hydrogenated rosin acid or its alkali metal or ammonium salt.The initiator is prepared by contacting disproportionated or hydrogenated rosin acid or its alkali metal or ammonium salt with molecular oxygen in water or an organic solvent at a temperature of 0.degree. to 150.degree.C. to form its hydroperoxide.

摘要翻译： 一种自由基聚合引发剂，其包含作为歧化或氢化松香酸或其碱金属或铵盐的氢过氧化物作为活性成分。