公开(公告)号：JPH04252241A

公开(公告)日：1992-09-08

申请号：JP26882891

申请日：1991-09-20

Applicant: BRIDGESTONE CORP

Inventor： JIYANGU DABURIYUU KANGU ,  GEIRII BII SHIIBAA ,  HASHIMOTO TAKATSUGU

IPC: C08F4/00 ,  C08F4/42 ,  C08F4/46 ,  C08F4/48 ,  C08F236/10 ,  C08L9/06 ,  C08L21/00

Abstract: PURPOSE:To provide the composition of an ultrahigh molecular weight copolymer of a conjugated diene with an aromatic vinyl compound, the copolymer having a weight-average molecular weight of approximately >=1000000. CONSTITUTION:The composition of an ultrahigh molecular weight copolymer characterized by its having an intrinsic viscosity of at least approximately 4.0 in tetrahydrofuran is produced by a method which comprises copolymerizing a 1,3-conjugated diene with a vinylic aromatic compound in a hydrocarbon solvent in the presence of a trimetallized 1-alkine catalyst comprising the reaction product of a >=4C 1-alkine, an organometallic compound R M and a 1,3-conjugated diene wherein R is hydrocarbyl group; M is alkali metal; the molar ratio of the R M to the 1-alkine is approximately 3:1; and the molar ratio of the conjugated diene to the 1-alkine is approximately 2:1 to approximately 30:1.

公开(公告)号：JP2500275B2

公开(公告)日：1996-05-29

申请号：JP26882891

申请日：1991-09-20

Applicant: BRIDGESTONE CORP

Inventor： JANGU DABURYUU KANGU ,  GEIRII BII SHIIBAA ,  HASHIMOTO TAKATSUGU

IPC: C08F4/00 ,  C08F4/42 ,  C08F4/46 ,  C08F4/48 ,  C08F236/10 ,  C08L9/06 ,  C08L21/00

公开(公告)号：JPH04252253A

公开(公告)日：1992-09-08

申请号：JP26901691

申请日：1991-09-20

Applicant: BRIDGESTONE CORP

Inventor： JIYANGU DABURIYUU KANGU ,  GEIRII BII SHIIBAA ,  HASHIMOTO TAKATSUGU

IPC: C08F4/46 ,  C08F236/10 ,  C08K5/00 ,  C08L9/06 ,  C08L25/10 ,  C08L89/00 ,  C08L91/00

Abstract: PURPOSE:To obtain an elastomer by blending a specific ultrahigh-molecular weight copolymer composition with an oil. CONSTITUTION:An ultrahigh-molecular weight elastomer is obtained by blending (A) 100 pts. wt. ultrahigh-molecular weight copolymer composition, prepared by polymerizing a 1,3-conjugated diene (e.g. 1,3-butadiene, isoprene or piperylene) with a vinyl aromatic compound (e.g. styrene) in the presence of a trimetalated 1-alkyne catalyst [a product of reaction between a >=4C 1-alkyne with an organometallic compound expressed by the formula R M (R is aliphatic or alicyclic group; M is alkali metal) and the 1,3-conjugated diene] in a hydrocarbon solvent and having >=2000000 weight-average molecular weight with (B) 30-300 pts. wt., preferably 50-300 pts. wt. extender oil.