1
Toshiyuki Tsutsui, Ken Yoshitsugu, Akinori Toyota: Ethylene random copolymers. Mitsui Petrochemical, Sherman and Shalloway, June 8, 1993: US05218071 (194 worldwide citation)

In accordance with the present invention, there are provided ethylene copolymers composed of structural units (a) derived from ethylene and structural units (b) derived from .alpha.-olefin of 3.about.20 carbon atoms, said ethylene copolymers having


2

3
Mamoru Kioka, Toshiyuki Tsutsui, Akinori Toyota: Olefin polymerization catalyst component, olefin polymerization catalyst and process for the polymerization of olefins. Mitsui Petrochemical, Sherman and Shalloway, February 25, 1992: US05091352 (103 worldwide citation)

In accordance with the present invention, there are provided olefin polymerization catalyst components comprising an organoaluminum oxy-compound having less than 10% in terms of Al atom of Al component dissolving in benzene kept at 60.degree. C., and olefin polymerization catalyst containing said ol ...


4
Naoshi Ishimaru, Mamoru Kioka, Akinori Toyota: Process for polymerizing olefins and polymerization catalyst therefor. Mitsui Petrochemical, Sherman and Shalloway, February 5, 1991: US04990479 (84 worldwide citation)

An olefin polymerization catalyst formed from (A) a solid titanium catalyst component containing magnesium, titanium and halogen as essential ingredients, (B) an organoaluminum compound, and (C) an organosilicon compound containing a cyclopentyl group, a cyclopentenyl group, a cyclopentadienyl group ...


5
Mamoru Kioka, Norio Kashiwa, Toshiyuki Tsutsui, Akinori Toyota: Catalyst for polymerizing an olefin and process for polymerizing an olefin. Mitsui Petrochemical, Sherman & Shalloway, April 27, 1993: US05206199 (83 worldwide citation)

An olefin is polymerized or copolymerized under the presence of an olefin-polymerizing catalyst prepared from (A) a transition-metal compound or (A') a transition-metal compound loaded on a fine-particle carrier, said transition metal being selected from group IVB in the periodic table; (B) an alumi ...


6

7
Akinori Toyota, Syuji Minami, Norio Kashiwa: Process for polymerizing alpha-olefins and catalyst therefor. Mitsui Petrochemical, Sherman & Shalloway, March 6, 1979: US04143223 (72 worldwide citation)

A process for polymerizing or copolymerizing .alpha.-olefins in the presence of a catalyst composed of (A) a mechanically pulverized solid titanium-containing catalyst component and (B) an organometallic compound of a metal of Groups I to III of the periodic table, wherein said titanium-containing c ...


8
Toshiyuki Tsutsui, Mamoru Kioka, Akinori Toyota: Benzene-insoluble organoaluminum oxy-compounds and process for preparing same. Mitsui Petrochemical, Sherman and Shalloway, February 5, 1991: US04990640 (70 worldwide citation)

In accordance with the present invention, there are provided benzene-insoluble organoaluminum oxy-compounds having less than 10% in terms of Al atom of Al component dissolving in benzene kept at 60.degree. C. and less than 0.09 of a (D.sub.1260 /D.sub.1220) of an absorbance (D.sub.1260) at 1260 cm.s ...


9

10
Akinori Toyota, Norio Kashiwa: Process for producing a chemically blended propylene polymer composition and the composition produced by said process. Mitsui Petrochemical, Sherman & Shalloway, October 15, 1985: US04547552 (63 worldwide citation)

A process for producing a chemically blended propylene polymer composition having an ethylene content ranging from 3 to 40% by weight and being greater than the weight of the rubbery propylene copolymer formed in stage (II) below, which comprises the following stages (I) and (II):