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Class Information
Number: 526/125.8
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Polymers from only ethylenic monomers or processes of polymerizing, polymerizable compositions containing only ethylenic monomers as reactants or processes of preparing > Polymerizing in the presence of a specified material other than monomer > Material contains transition metal or compound thereof > Material contains compound of group ia (li, na, k, rb, cs, fr) or group iia (be, mg, ca, sr, ba, ra) metal wherein ia or iia metal is not bonded to hydrogen or to carbon > Contains nontransition elemental metal, hydride thereof, or carbon to non-transition metal atom bond > Contains a magnesium compound as the group iia metal compound > Contains at least one additional specified material > Contains at least one inorganic material having no h to metal bonds
Description: Subject matter wherein the additional specified material is an inorganic material having no bonds between hydrogen and metal.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
7256150 Preparation of olefin polymerization catalyst component Aug. 14, 2007
7026265 Catalyst component comprising magnesium, titanium, a halogen and an electron donor, its preparation and use Apr. 11, 2006
7008898 Method for producing a poly-1-olefin in the presence of a ziegler catalyst Mar. 7, 2006
6982237 Spray-dried polymerization catalyst and polymerization processes employing same Jan. 3, 2006
6586536 High temperature process for the production of atactic, amorphous, tacky propylene homopolymers or copolymers Jul. 1, 2003
6291613 Process for the polymerization of olefins Sep. 18, 2001
6187879 Process for producing polyolefins Feb. 13, 2001
5955553 Molecular weight regulation of cis-1,4-polybutadiene using carboxylates Sep. 21, 1999
5652314 Shape-shifted magnesium alkoxide component for polymerizing olefins Jul. 29, 1997
5612427 Catalyst for the polymerization of diolefins, method for its preparation, and its use for the preparation of polymers Mar. 18, 1997
5604172 Shape-shifted magnesium alkoxide component for polymerizing olefins Feb. 18, 1997
5571619 Fibers and oriented films of polypropylene higher .alpha.-olefin copolymers Nov. 5, 1996
5567665 Shape-shifted magnesium alkoxide component for polymerizing olefins Oct. 22, 1996
5508245 Spherical components and catalysts for the polymerization of olefins Apr. 16, 1996
5492984 Olefin polymerization catalyst based on magnesium chloride complexes Feb. 20, 1996
5349033 Process for the preparation of polyolefin Sep. 20, 1994
5344885 Preparation of propylene-ethylene copolymers Sep. 6, 1994
5246900 Olefin polymerization catalysts and processes of making the same Sep. 21, 1993
5244853 Catalyst component for ethylene polymerization Sep. 14, 1993
5151397 Method of producing metal halide catalyst Sep. 29, 1992
5118769 Manufacturing method of polyolefin Jun. 2, 1992
5106927 Process for producing ethylene/propylene/ethylidene norbornene rubbers Apr. 21, 1992
5106926 Preparation of ethylene/1-octene copolymers of very low density in a fluidized bed reactor Apr. 21, 1992
5066736 Gas-phase alpha-olefin polymerization process in the presence of an activity retarder Nov. 19, 1991
5037908 Process for polymerization of butene-1 Aug. 6, 1991
4962167 Process for preparing ultra-high molecular weight polyethylene Oct. 9, 1990
4921920 Process for the polymerization or copolymerization of alpha-olefins in a fluidized bed, in the presence of a Ziegler-Natta catalyst system May. 1, 1990
4859757 Novel propylene polymers Aug. 22, 1989
4857611 Gas fluidized bed terpolymerization of olefins Aug. 15, 1989
4849483 Process for producing a catalyst component for polymerization of olefins Jul. 18, 1989
4847340 Novel propylene polymerization process Jul. 11, 1989
4780438 Catalyst component for alpha olefine-polymerizing catalysts and procedure for manufacturing the same Oct. 25, 1988
4774300 Supported polyolefin catalyst components and methods of making and using the same Sep. 27, 1988
4740570 Metal halide vaporization into diluents Apr. 26, 1988
4737481 Process for producing catalyst ingredient for use in olefin polymerization Apr. 12, 1988
4737555 Process for producing a catalyst component for polymerization of olefins Apr. 12, 1988
4736002 Novel propylene polymerization process Apr. 5, 1988
4703026 Catalyst component for polymerization of olefins Oct. 27, 1987
4699961 High efficiency catalysts for varying olefin polymer molecular weight distribution Oct. 13, 1987
4686199 Process for producing a catalyst component for polymerization of olefins Aug. 11, 1987
4681924 Catalyst systems for polymerizations at high temperatures Jul. 21, 1987
4680351 Supported polyolefin catalyst components and methods of making and using same Jul. 14, 1987
4678768 Catalyst component for polymerization of olefins Jul. 7, 1987
4673661 Catalyst components, a catalyst and a process for the polymerization of olefins Jun. 16, 1987
4650778 Metal halide vaporization into diluents Mar. 17, 1987
4649182 Polymerization catalysts and methods of preparation thereof Mar. 10, 1987
4642328 Copolymerization of ethylene and an alpha-olefin having 6 carbon atoms in a fluidized bed Feb. 10, 1987
4636486 Polymerization catalysts Jan. 13, 1987
4625003 Catalyst component for polymerization of olefins (P-1026) Nov. 25, 1986
4621124 Catalyst system for the polymerization of ethylene Nov. 4, 1986

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