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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Matsuura; Kazuo
Address:
Kawasaki, JP
No. of patents:
17
Patents:












Patent Number Title Of Patent Date Issued
6111040 Process for the production of olefinic polymers August 29, 2000
A catalyst comprises a composition resulting from mutual contact of the following Components. (A), (B), (C) and (D):said Component (A) being a reaction product resulting from mutual contact of components (a), (b) and (c);said component (a) being represented by the formulawherein R.sup.1 and
5750454 Catalyst composition and process for the production of olefinic polymers May 12, 1998
A catalyst comprises a composition resulting from mutual contact of the following Components (A), (B), (C) and (D):said Component (A) being a reaction product resulting from mutual contact of components (a), (b) and (c);said component (a) being represented by the formulawherein R.sup.1 and R
4415718 Terpolymer produced from ethylene, propylene and butylene-1 November 15, 1983
Using a catalyst comprising (1) a solid substance which contains magnesium and titanium, (2) an organometallic compound and (3) an electron donor, there are polymerized ethylene, propylene and 1-butene to obtain a soft or semi-hard terpolymer of low crystallinity containing 75.2 to 91.5
4414369 Continuous process for the preparation of polyolefins having widely distributed molecular weight November 8, 1983
Polyolefins having a wide distribution of molecular weights are prepared in a plural stage process, by initially polymerizing the olefins in the presence of a solvent, hydrogen and a highly active Ziegler type catalyst under pressure, and beneath a gas phase containing an inert gas, to f
4410670 Process for preparing polyolefins October 18, 1983
This invention provides a process for preparing polyolefins using a new catalyst. According to this invention, .alpha.-olefins can be polymerized or copolymerized to have good stereoregularity and at a high activity by the use of such new catalyst. The new catalyst used in this invention
4404342 Process for preparing a copolymer September 13, 1983
According to this invention, there is provided a process for preparing a low-crystalline soft or semi-hard copolymer, characterized in that 90 to 98 mole % of propylene, 0.2 to 9 mole % of ethylene and 0.2 to 9 mole % of a straight-chained (.alpha.-olefin having not less than four carbon
4384088 Process for preparing polyolefins May 17, 1983
According to this invention, there is provided a process for preparing polyolefins wherein olefins are polymerized or copolymerized using as catalyst a solid component and an organometallic compound, characterized in that said solid component is a substance obtained by the copulveriz
4371679 Process for preparing polyolefins February 1, 1983
This invention provides a process for preparing polyolefins by polymerizing or copolymerizing olefins using as the catalyst a titanium compound-containing solid component and an organometal compound, said solid component comprising a substance obtained by copulverizing (1) magnesium
4330639 Polymer blend composition for forming polyethylene film May 18, 1982
Provided is a polymer composition for forming polyethylene film comprising an ethylene/C.sub.3 -C.sub.8 .alpha.-olefin copolymer having an intrinsic viscosity of 1.3 to 8.7 dl/g determined in decalin at 135.degree. C. and a density of 0.850 to 0.930 and an ethylene polymer having a melt
4322514 Process for preparing a copolymer March 30, 1982
According to this invention, there is provided a process for preparing a non- or low-crystalline soft copolymer, characterized in that 50 to 98 mole % of propylene, 0.2 to 30 mole % of ethylene and 0.2 to 45 mole % of a straight-chained .alpha.-olefin having not less than four carbon ato
4315999 Process for preparing polyolefins February 16, 1982
An olefin is polymerized using a catalyst obtained by contacting (1) at least one of silicon or aluminum dioxide, (2) a compound of the formula ROH wherein R is a hydrocarbon radical having 1 to 20 carbon atoms, and (3) a substance obtained by supporting a titanium or a vanadium compound
4288579 Process for preparing polyolefins September 8, 1981
According to this invention there is provided a process for polymerizing or copolymerizing olefins using a catalyst consisting of:[A]a solid component obtained by contacting(1) a reaction product resulting from heat reaction of a magnesium oxide and an aluminum trihalide with(2) a titanium h
4252929 Process for preparing polyolefins February 24, 1981
According to the present invention, there is provided a process for preparing polyolefins comprising polymerizing or copolymerizing olefins using as catalyst a titanium-containing solid and an organometallic compound of a metal of Groups I to IV of the Periodic Table, said titanium-c
4209602 Process for the production of polyolefins June 24, 1980
The present invention discloses improved catalysts for polymerizing or copolymerizing olefins and a process for the production of polyolefins comprising a polymerization or copolymerization of olefins by the use of said catalysts. According to the invention there is provided a process fo
4209601 Process for the production of polyolefins June 24, 1980
The present invention discloses improved catalysts for polymerizing or copolymerizing olefins and a process for the production of polyolefins comprising a polymerization or copolymerization of olefins by the use of said catalysts. According to the invention there is provided a process fo
4202953 Process for the production of polyolefins May 13, 1980
A process for the production of polyolefins using an improved catalyst which exhibits enhanced activity in the polymerization or copolymerization of olefins such that the yields of the polymers or copolymers are increased with a minimum catalyst residue remaining. The catalyst is pro
4154915 Process for producing polyolefins May 15, 1979
An improved catalyst system is disclosed for use in the polymerization or copolymerization of olefins. The catalyst comprises a transition metal compound, an organometal compound and a composite carrier. This carrier is constituted by a SO.sub.3 treated alumina and a magnesium and/or a c










 
 
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