公开(公告)号：EP1586591A4

公开(公告)日：2006-06-14

申请号：EP04704723

申请日：2004-01-23

Applicant: MITSUI CHEMICALS INC

Inventor： MATSUURA SADAHIKO ,  MURAKAMI HIDETATSU ,  HASADA YASUHIRO ,  SAITO JUNJI ,  FUJITA TERUNORI ,  MATSUI SHIGEKAZU

IPC: C08F4/64 ,  C08F8/00 ,  C08F210/18

CPC classification number: C08F210/18 ,  C08F210/06 ,  C08F236/20 ,  C08F2500/25 ,  C08F2500/17 ,  C08F4/64048

Abstract: A process for producing an ethylene/α-olefin/unconjugated polyene copolymer, which comprises copolymerizing ethylene, an α-olefin, and an unconjugated polyene in a hydrocarbon solvent with the aid of a transition metal compound catalyst to obtain a solution containing a copolymer and removing the unreacted monomers and the hydrocarbon solvent from the solution without removing the residual catalyst, characterized in that the monomers are copolymerized under the conditions of a polymerization temperature of 100°C or higher and a polymerization pressure of 2.7 MPa or higher while regulating the concentration of the unconjugated polyene in the polymerization mixture solution to a value less than the maximum unconjugated-polyene concentration Cmax (mol/L) shown below: Cmax = 0.050 (mol/L) when the iodine value (IV) of the copolymer is 9.0 to less than 17.0 g/100g, and Cmax = 0.104 (mol/L) when the iodine value (IV) of the copolymer is not lower than 17.0 g/100g.

公开(公告)号：EP1241194A4

公开(公告)日：2004-12-22

申请号：EP01954350

申请日：2001-07-26

Applicant: MITSUI CHEMICALS INC

Inventor： KASHIWA NORIO ,  KOJOH SHINICHI ,  MATSUO SHINGO ,  SAITO JUNJI ,  FUJITA TERUNORI ,  MITANI MAKOTO ,  TAKAHASHI MAMORU ,  SATO YASUO

IPC: C08F4/02 ,  C08F4/60 ,  C08F4/658 ,  C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F255/00 ,  C08F255/02 ,  C08F290/00 ,  C08F290/04 ,  C08F290/06

CPC classification number: C08F290/06 ,  C08F4/65912 ,  C08F4/6592 ,  C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F255/00 ,  C08F255/02 ,  C08F290/00 ,  C08F290/042 ,  C08F2420/02 ,  C08F4/64048 ,  C08F2500/12 ,  C08F2500/03 ,  C08F2500/09 ,  C08F2500/20 ,  C08F2500/11 ,  C08F210/14 ,  C08F4/65904

Abstract: A polymer characterized by having a melt tension (MT (g)) substantially equal to or lower than that of a polymer which is substantially equal in repeating units of the backbone and in molecular weight, molecular-weight distribution, and crystallinity and by having a flow activation energy (Ea (KJ/mol)) higher by at least 5 KJ/mol than the Ea value of that polymer. A preferred example of the polymer is one which comprises 50 to 100 mol% repeating units derived from ethylene and 0 to 50 mol% repeating units derived from an a-olefin having 3 to 20 carbon atoms, satisfies a specific relationship between flow activation energy (Ea (KJ/mol)) and a-olefin content (C (wt.%)), and satisfies a specific relationship between melt tension (MT (g)) and melt flow rate (MFR (g/10 min)). This branched polyolefin is excellent in moldability and mechanical strength.