1
Daisuke Fukuoka, Takashi Tashiro, Koji Kawaai, Takashi Ueda, Yoshihisa Kiso, Akira Mizuno, Masaaki Kawasaki, Masaaki Itoh, Mikio Hashimoto: Propylene polymer, copolymers and elastomer. Mitsui Chemicals, Sherman and Shalloway, August 10, 1999: US05936053 (77 worldwide citation)

A propylene polymer is excellent in rigidity, heat resistance, surface hardness, glossiness, transparency and impact resistance. A propylene copolymer (wherein the amount of monomer units derived from an .alpha.-olefin other than propylene is not more than 5% by mol) is excellent in transparency, ri ...


2
Daisuke Fukuoka, Takashi Tashiro, Koji Kawaai, Junji Saito, Takashi Ueda, Yoshihisa Kiso, Junichi Imuta, Terunori Fujita, Masatoshi Nitabaru, Masayasu Yoshida: Substituted indenyl ring containing metallocene catalyst for propylene polymerization process. Mitsui Petrochemical, Sherman and Shalloway, May 13, 1997: US05629254 (36 worldwide citation)

The novel transition metal catalyst of the invention is represented by the following formula (I): ##STR1## wherein M is a zirconium or hafnium; R.sup.1 is a hydrocarbon group of 2 to 6 carbon atoms, R.sup.2 is an aryl group of 6 to 16 carbon atoms; X.sup.1 and X.sup.2 are each a halogen atom; and Y ...


3
Daisuke Fukuoka, Takashi Tashiro, Koji Kawaai, Junji Saito, Takashi Ueda, Yoshihisa Kiso, Junichi Imuta, Terunori Fujita, Masatoshi Nitabaru, Masayasu Yoshida: Process for polymerizing propylene by using a novel metallocene catalyst. Mitsui Petrochemical, January 20, 1998: US05710223 (30 worldwide citation)

A process for polymerizing propylene utilizes a metallocene catalyst component of the formula (I) ##STR1## wherein M is a transition metal, R.sup.1 is a C.sub.2-6 hydrocarbon, R.sup.2 is a C.sub.6-16 aryl group, X.sup.1 and X.sup.2 are each a halogen atom and Y is a divalent hydrocarbon or a divalen ...


4
Takashi Ueda, Mikio Hashimoto, Masaaki Kawasaki, Daisuke Fukuoka, Junichi Imuta: Process for preparing propylene polymer composition and propylene polymer composition. Mitsui Petrochemical, Sherman and Shalloway, May 19, 1998: US05753769 (28 worldwide citation)

A process for preparing a propylene polymer composition having excellent rigidity, heat resistance and impact resistance comprising conducting multistage polymerization including a step (a) for preparing a propylene (co)polymer (A), a step (b) for preparing a propylene-olefin copolymer (B) and a ste ...


5
Daisuke Fukuoka, Takashi Tashiro, Koji Kawaai, Junji Saito, Takashi Ueda, Yoshihisa Kiso, Junichi Imuta, Terunori Fujita, Masatoshi Nitabaru, Masayasu Yoshida: Process for polymerizing propylene by using a novel metallocene catalyst. Mitsui Petrochemical, Sherman And Shalloway, August 19, 1997: US05658997 (26 worldwide citation)

The novel transition metal compound of the invention is represented by the following formula (I): ##STR1## wherein M is a transition metal; R.sup.1 is a hydrocarbon group of 2 to 6 carbon atoms, R.sup.2 is an aryl group of 6 to 16 carbon atoms; X.sup.1 and X.sup.2 are each a halogen atom or the like ...


6
Daisuke Fukuoka, Takashi Tashiro, Koji Kawaai, Junji Saito, Takashi Ueda, Yoshihisa Kiso, Junichi Imuta, Terunori Fujita, Masatoshi Nitabaru, Masayasu Yoshida: Transition metal compound having indenyl-containing metallocene. Mitsui Petrochemical, Sherman and Shalloway, March 3, 1998: US05723640 (26 worldwide citation)

The novel transition metal compound of the invention is represented by the following formula (I): ##STR1## wherein M is a transition metal; R.sup.1 is a hydrocarbon group of 2 to 6 carbon atoms, R.sup.2 is an aryl group of 6 to 16 carbon atoms; X.sup.1 and X.sup.2 are each a halogen atom or the like ...


7
Mikio Hashimoto, Takasi Ueda, Masaaki Kawasaki, Satoru Moriya, Akira Mizuno, Daisuke Fukuoka, Junichi Imuta, Keiji Hirose, Junji Saito, Yoshihisa Kiso: Propylene polymer compositions containing a propylene homo- or co-polymer obtained using a bridged metallocene catalyst and another propylene homo- or co-polymer. Mitsui Chemicals, December 5, 2000: US06156844 (22 worldwide citation)

A propylene polymer composition is prepared by mixing a first propylene polymer prepared using an olefin polymerization catalyst containing a specific metallocene catalyst component of formula (I), e.g., rac-dimethylsilylene-bis{1-(2-ethyl-4-phenylindenyl)} zirconium dichloride, and an organoaluminu ...


8
Takashi Ueda, Mikio Hashimoto, Masaaki Kawasaki, Daisuke Fukuoka, Junichi Imuta: Process for preparing propylene polymer composition and propylene polymer composition. Mitsui Petrochemical, Sherman and Shalloway, December 29, 1998: US05854354 (22 worldwide citation)

A process for preparing a propylene polymer composition comprising conducting multistage polymerization including a step (a) for preparing a propylene (co)polymer (a) and a step (b) for preparing an ethylene copolymer (b) in the presence of (A) a transition metal compound and (B) a compound activati ...


9
Junichi Imuta, Daisuke Fukuoka, Masayasu Yoshida, Junji Saito, Terunori Fujita, Takashi Tashiro, Koji Kawaai, Takashi Ueda, Yoshihisa Kiso: Transition metal compound, olefin polymerization catalyst component comprising the transition metal compound, olefin polymerization catalyst comprising the olefin polymerization catalyst component, and process for olefin polymerization. Mitsui Petrochemical, Sherman and Shalloway, April 1, 1997: US05616663 (18 worldwide citation)

Disclosed is a novel transition metal compound represented by the following formula: ##STR1## wherein M is a transition metal, X is halogen or the like, R.sup.1 is a hydrocarbon group or the like, R.sup.2 is an aryl group substituted with a halogenated hydrocarbon group, and Y is a divalent silicon- ...


10
Daisuke Fukuoka, Takashi Tashiro, Koji Kawaai, Takashi Ueda, Yoshihisa Kiso, Akira Mizuno, Masaaki Kawasaki, Masaaki Itoh, Mikio Hashimoto: Propylene homopolymer and propylene copolymer prepared using novel bridged indenyl-containing metallocene. Mitsui Petrochemical, Sherman and Shalloway, January 6, 1998: US05705584 (17 worldwide citation)

The novel propylene homopolymer and copolymer produced by using a catalyst which is represented by the following formula (I): ##STR1## wherein M is a transition metal; R.sup.1 is a hydrocarbon group of 2 to 6 carbon atoms, R.sup.2 is an aryl group of 6 to 16 carbon atoms; X.sup.1 and X.sup.2 are eac ...