1
Junichi Imuta, Takashi Ueda, Yoshihisa Kiso, Akira Mizuno, Masaaki Kawasaki, Mikio Hashimoto: Propylene polymer, propylene copolymer, and propylene elastomer prepared using novel bridged indenyl containing metallocenes. Mitsui Petrochemical, Sherman and Shalloway, April 2, 1996: US05504172 (231 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 and R.sup.2 are each a hydrogen atom, a hydrocarbon group or the like; R.sup.3 is an alkyl group of 2 to 20 carbon atoms; R.sup.4 is an alkyl group of 2 ...


2
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 ...


3
Masaaki Kawasaki, Toshimasa Takata, Mitsuhiko Onda, Hidenari Nakahama, Kiyoshi Honma: Ethylene/alpha-olefin/7-methyl-1,6-octadiene copolymer rubber and composition of the same. Mitsui Petrochemical, Sherman and Shalloway, March 8, 1994: US05292845 (68 worldwide citation)

The ethylene/.alpha.-olefin/7-methyl-1,6-octadiene copolymer rubber of the invention is a random copolymer rubber prepared using a Group IVB transition metal type catalyst containing a specific zirconium catalyst component, and in this copolymer rubber, a molar ratio of ethylene to .alpha.-olefin, a ...


4
Junichi Imuta, Junji Saito, Takashi Ueda, Yoshihisa Kiso, Akira Mizuno, Masaaki Kawasaki: Processes for producing propylene polymer utilizing bis (1-(4-isopropyl-7-methyl-indenyl) zirconium halide-base catalyst components. Mitsui Chemicals, Sherman and Shalloway, September 28, 1999: US05959046 (41 worldwide citation)

A process for producing a propylene polymer having an intrinsic viscosity (.eta.), as measured in decahydronaphthalene at 135.degree. C., of 1 to 12 dl/g comprises polymerizing propylene optionally with other olefins in the presence of an olefin polymerization catalyst comprising a transition metal ...


5
Masaaki Kawasaki, Shuji Minami, Hiroaki Kitani, Junichi Yoshitake: Hot-melt adhesive. Mitsui Petrochemical, Sherman and Shalloway, September 14, 1993: US05244996 (38 worldwide citation)

A random copolymer of an .alpha.-olefin having 4 to 12 carbon atoms with an aromatic vinyl monomer containing 50 to 98% by mol of .alpha.-olefin and having a softening point of 40.degree. to 150.degree. C. is useful as a hot-melt adhesive and is excellent in adhesiveness, workability, environmental ...


6
Takashi Hakuta, Masaaki Kawasaki, Yoshiharu Kikuchi, Hidenari Nakahama, Taku Koda, Hiroshi Kameda, Shuichi Nonaka, Mikio Hosoya, Yuji Ishii, Mitsunao Arino, Tsutomu Nakamura, Satao Hirabayashi, Takeo Yoshida: Crosslinkable rubber compositions and use thereof. Mitsui Chemicals, Shin-Etsu Chemical, Burns Doane Swecker & Mathis, March 8, 2005: US06864315 (33 worldwide citation)

The crosslinkable rubber composition of the invention is crosslinkable by hot air, and a hot-air crosslinked rubber sheet thereof has no scratch on the surface in a hardness test using a pencil of HB and has a compression set of not more than 70% after a heat treatment at 150° C. for 22 hours. The r ...


7
Masaaki Kawasaki, Yoshio Miyake, Tomoko Sueyoshi, Atsuo Kobata: Process for the preparation of polyolefin. Mitsui Petrochemical, Sherman and Shalloway, February 4, 1997: US05599885 (31 worldwide citation)

A process for the preparation of polyolefin which comprises polymerizing or copolymerizing olefin in the presence of a catalyst for olefin polymerization comprising (A) a metallocene compound of a transition metal selected from the Group IVB of the periodic table, and (B) an organoaluminum oxy-compo ...


8
Masaaki Kawasaki, Toshiyuki Tsutsui, Tetsuo Tojo, Takashi Hakuta: Ethylene copolymer rubber, vulcanizable rubber composition containing the copolymer rubber, and process for preparing the copolymer rubber. Mitsui Petrochemical, Sherman and Shalloway, December 16, 1997: US05698651 (31 worldwide citation)

Disclosed is an ethylene copolymer rubber which is a random copolymer rubber of (a) ethylene, (b) an .alpha.-olefin of 3 to 20 carbon atoms, (c) a nonconjugated polyene containing, in one molecule, one carbon-to-carbon double bond polymerizable by a metallocene catalyst among carbon-to-carbon double ...


9
Junichi Imuta, Junji Saito, Takashi Ueda, Yoshihisa Kiso, Akira Mizuno, Masaaki Kawasaki: Transition metal compound containing substituted indenyl rings. Mitsui Petrochemical, Sherman and Shalloway, April 14, 1998: US05739366 (29 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 and R.sup.2 are each a hydrogen atom, a hydrocarbon group or the like; R.sup.3 is an alkyl group of 2 to 20 carbon atoms; R.sup.4 is an alkyl group of 2 ...


10
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 ...