Patents by Inventor Ronald A. Epstein

Ronald A. Epstein has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190211118
    Abstract: A phthalate-free procatalyst composition is disclosed for olefin polymerization that exhibits excellent polymerization activity and response to hydrogen, and can produce a polyolefin exhibiting high stereoregularity, high melt flow rate, and desirable molecular weight distribution. The method for producing the procatalyst composition includes reaction of a magnesium support precursor with a tetravalent titanium halide and a combination of different internal electron donors. The first internal electron donor may comprise one or more substituted phenylene aromatic diester and the second internal electron donor may comprise a polyether, preferably a 1,3-diether. In one embodiment, the support precursor comprises a spherical spray crystalized MgCl2-EtOH adduct.
    Type: Application
    Filed: September 28, 2017
    Publication date: July 11, 2019
    Inventors: Michael J. Elder, Ronald A. Epstein, Timothy A. Boyer, Courtney S. Spain, Michael S. Miller
  • Publication number: 20030022786
    Abstract: A polypropylene catalyst (no more than 2 wt % titanium) contains at least one titanium-halogen bond-containing compound, internal donor, and activated, amorphous magnesium dihalide support, essentially free of alkoxy functionality.
    Type: Application
    Filed: May 3, 2001
    Publication date: January 30, 2003
    Inventors: Ronald A. Epstein, William T. Wallack
  • Patent number: 6288005
    Abstract: A catalyst component, adapted for use in the polymerization and copolymerization of ethylene, is formed by reaction of an organomagnesium compound with a metal oxide support to form a supported organomagnesium composition, reaction of the supported organomagnesium composition and a tetraalkyl silicate, contact of the resulting product with a chlorinating reagent, and treatment of the product from the previous step with liquid titanium halide.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: September 11, 2001
    Assignee: Akzo N.V.
    Inventors: Bor-Ping E. Wang, Elliot I. Band, Ronald A. Epstein
  • Patent number: 5895771
    Abstract: Catalyst compositions for the polymerization of an olefin are disclosed which comprise a neutral metallocene and, as the ionizing agent an anionic aluminum-containing complex which is a fluorinated alkoxy and/or aryloxy aluminate. The fluorinated alkoxy aluminate can be of the formula A.sup.+ (Al(OR).sub.4).sup.-, where A.sup.+ is a cation capable of reacting with the neutral metallocene to produce a cationic metallocene and a non-reacting neutral species and R is a fluorinated alkyl and/or aryl group, with a representative group for A.sup.+ being (C.sub.6 H.sub.5).sub.3 C.sup.+ and with the representative fluorinated alkoxy aluminates including ?Al(OC(Ph)(CF.sub.3).sub.2).sub.4 !.sup.-, where Ph is phenyl, and ?Al(OC(CH.sub.3)(CF.sub.3).sub.2).sub.4 !.sup.-.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: April 20, 1999
    Assignee: Akzo Nobel NV
    Inventors: Ronald A. Epstein, Thomas J. Barbarich
  • Patent number: 4761499
    Abstract: High yields of olefinic esters and amides, and the like are derived from a process wherein vinyl dihalides are carbonylated in the presence of a palladium catalyst and a primary or secondary amine base or tertiary amine, depending on the desired product, and a solvent.
    Type: Grant
    Filed: June 2, 1987
    Date of Patent: August 2, 1988
    Assignee: Akzo America Inc.
    Inventor: Ronald A. Epstein
  • Patent number: 4713484
    Abstract: A process for preparing carboxylic acid salts by the reaction of carbon monoxide with substituted or unsubstituted aromatic halides or an aliphatic organic halide. The process comprises the catalytic single phase carbonylation of the halide utilizing in addition to carbon monoxide, a palladium catalyst, an excess of tertiary phosphine, optionally an amine compound, with an alkali metal or alkaline earth metal base added during the reaction to form the salt.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: December 15, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Ronald A. Epstein
  • Patent number: 4668816
    Abstract: High yields of aromatic, aromatic acetic and olefinic acids, esters, amides and the like are derived from a process wherein a halo-hydrocarbon is carbonylated in the presence of a palladium catalyst, a hindered amine base and phosphine in excess. The hindered amine base can comprise C.sub.3 -C.sub.10 branched alkyls, cyclic compounds, or mixtures of the above. The preferred amine is N,N-diisopropylethyl amine. The preferred catalyst is PdCl.sub.2 (PPH.sub.3).sub.2 with the excess phosphine generally supplied by a compound of the formula PR.sup.1 R.sup.2 R.sup.3 where R.sup.1, R.sup.2 and R.sup.3 are preferably phenyl.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: May 26, 1987
    Assignee: Stauffer Chemical Company
    Inventor: Ronald A. Epstein
  • Patent number: 4614729
    Abstract: Supported organometallic compounds of Groups II, III and IV of the Periodic Table are utilized for purifying fluids particularly hydrocarbon fluids, noble gases, nitrogen and hydrogen and desirable hydrocarbon solvents and olefins to remove impurities such as oxygen, sulfur, halogen-containing compounds, active hydrogen compounds and other polar compounds. The supported organometallic compounds, preferably supported metal alkyls, are prepared by reacting the pretreated dried solid support material with the organometallic compounds in such a manner as to effect loading or impregnation of the organometallic moieties onto the support.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: September 30, 1986
    Assignee: Stauffer Chemical Company
    Inventors: Janet E. Crawford, Ronald A. Epstein, Kelly B. Triplett
  • Patent number: 4384984
    Abstract: A catalytic system for polymerizing olefins contains an organoaluminum compound and a component containing titanium halide on a support of a magnesium or manganese compound containing halogen, which is obtained by (i) pretreating the support with an ether, (ii) intimately contacting the support with an electron donor, to activate it, and (iii) reacting the activated support with a titanium halide, such as titanium tetrachloride.The invention also includes the process for preparing the titanium component, the composition of the titanium component, and the use of the novel catalytic system to polymerize olefins.
    Type: Grant
    Filed: September 30, 1981
    Date of Patent: May 24, 1983
    Assignee: Stauffer Chemical Company
    Inventors: Robert I. Mink, Ronald A. Epstein
  • Patent number: 4364853
    Abstract: A catalytic system for polymerizing olefins comprises:(a) a component containing an organoaluminum compound, and(b) a component containiong a titanium halide prepared by a process comprising:(i) intimately contacting a magnesium compound containing halogen or a manganese compound containing halogen with a carboxylic acid to produce an activated product,(ii) optionally treating the activated product with a phenol, and(iii) reacting the activated product, optionally treated with phenol, with a titanium halide compound.The invention also includes a process for preparing component (b) containing a titanium halide, the composition of component (b), and the use of the catalytic system for polymerizing olefins such as ethylene or propylene.
    Type: Grant
    Filed: September 18, 1981
    Date of Patent: December 21, 1982
    Assignee: Stauffer Chemical Company
    Inventors: Robert I. Mink, Ronald A. Epstein
  • Patent number: 4354959
    Abstract: A catalytic system for polymerizing olefins comprises:(a) a component containing an organoaluminum compound, and(b) a component containing a titanium halide obtained by:(i) copulverizing a magnesium compound containing halogen or a manganese compound containing halogen with at least one electron-donor compound to produce a copulverized product,(ii) treating the copulverized product with an ether to produce a treated product, and(iii) reacting the treated product with a titanium chloride.The novel catalytic system is useful for polymerizing olefins such as ethylene and propylene.A process for producing the component containing a titanium halide is also provided.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: October 19, 1982
    Assignee: Stauffer Chemical Company
    Inventors: Ronald A. Epstein, Robert I. Mink
  • Patent number: 4347160
    Abstract: A novel catalyst system for the polymerization of alpha-olefins is provided. The catalyst system comprises: (a) an organoaluminum containing component, e.g. triethyl aluminum, and (b) a titanium halide containing component. The titanium halide containing component is obtained by co-pulverizing a halogen containing magnesium compound, e.g. MgCl.sub.2, with an electron-donor compound, e.g. ethyl benzoate, to produce a co-pulverized product. The co-pulverized product is then reacted with an organic phosphite, e.g. triphenyl phosphite, to produce a reaction product. The reaction product is then reacted with a titanium halide compound, e.g. TiCl.sub.4.A novel titanium halide containing component is provided as well as a process for producing said component. A process for the polymerization of alpha-olefins is also provided.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: August 31, 1982
    Assignee: Stauffer Chemical Company
    Inventors: Ronald A. Epstein, Robert I. Mink
  • Patent number: 4325836
    Abstract: A novel catalyst system for the polymerization of alpha-olefins is provided. The catalyst system comprises:(a) an organoaluminum containing component, e.g. triethyl aluminum, and(b) a titanium halide containing component.The titanium halide containing component is obtained by reacting a halogen containing magnesium compound, e.g. MgCl.sub.2, with an organic phosphite, e.g. triphenyl phosphite, to produce a reaction product. The reaction product is then co-pulverized with a complex of a titanium halide compound and an electron donor compound, e.g. TiCl.sub.4.ethyl benzoate, to produce a co-pulverized product. The co-pulverized product is then reacted with a titanium halide compound, e.g. TiCl.sub.4.A novel titanium halide containing component is provided as well as a process for producing said component. A process for the polymerization of alpha-olefins is also provided.
    Type: Grant
    Filed: July 18, 1980
    Date of Patent: April 20, 1982
    Assignee: Stauffer Chemical Company
    Inventors: Ronald A. Epstein, Robert I. Mink
  • Patent number: 4312782
    Abstract: A novel catalyst system for the polymerization of alpha-olefins is provided. The catalyst system comprises: (a) an organoaluminum containing component, e.g. triethyl aluminum, and (b) a titanium halide containing component. The titanium halide containing component is obtained by copulverizing a halogen containing magnesium compound, e.g. MgCl.sub.2, with an active hydrogen containing organic compound, e.g. phenol, to produce a copulverized product. The copulverized product is then reacted with an organometallic compound of a metal of Groups I to III of the Periodic Table, e.g. triethyl aluminum, to produce a reaction product. The reaction product is then copulverized with a complex of a first titanium halide compound and an electron-donor, e.g. TiCl.sub.4.ethyl benzoate, to produce a solid reaction product. The solid reaction product is then reacted with a second titanium halide compound, e.g. TiCl.sub.4.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: January 26, 1982
    Assignee: Stauffer Chemical Company
    Inventors: Robert Mink, Ronald Epstein