| Patent Number |
Title Of Patent |
Date Issued |
| 6030928 |
Polymers useful in the recovery and processing of natural resources |
February 29, 2000 |
| The soluble polymers comprising an N-vinyl amide such as an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore. Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radic |
| 5705725 |
Aromatic alkali metal alkene addition process |
January 6, 1998 |
| A process is provided comprising: (a) contacting a hydrocarbyl lithium with an alkali metal hydrocarbyloxide in the presence of an aromatic compound; and thereafter (b) recovering an aromatic alkali metal compound; and thereafter (c) contacting said aromatic alkali metal compound with an |
| 5484865 |
Copolymers of ampholytic ion pairs containing vinylic tertiary amine |
January 16, 1996 |
| A composition of a superabsorbent polymer and a process for using the polymer to absorb an aqueous electrlyte solution are disclosed. The composition comprises repeating units derived from: (a) an ampholytic ion pair prepared from a polymerizable vinylic tertiary amine-containing mon |
| 5382371 |
Polymers useful in the recovery and processing of natural resources |
January 17, 1995 |
| Water-soluble polymers comprising an N-vinyl amide such as an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore.Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radi |
| 5354806 |
Superabsorbent crosslinked ampholytic ion pair copolymers |
October 11, 1994 |
| The present invention provides novel articles of manufacture and a method for absorbing aqueous electrolyte solutions, utilizing polymers formed by crosslinking an ampholytic ion pair (2-methacryloyloxyethyldiethylammonium cation (MEDEA)/sulfonate anion) copolymer. The articles of manufa |
| 5334685 |
Grafted copolymers highly absorbent to aqueous electrolyte solutions |
August 2, 1994 |
| The present invention provides graft copolymers that are highly absorbent to aqueous electrolyte solutions. The graft copolymer is formed by the graft polymerizing an effective amount of each of the following components together to provide a highly absorbent copolymer:(a) graft polymeriz |
| 5326854 |
Flocculation process using lactam or vinyl sulfonate polymer |
July 5, 1994 |
| A process capable of operation under hostile conditions for accelerating the sedimentation of suspended solids in an aqueous suspension using a flocculating agent comprising a water-soluble polymer composition produced from a monomer composition comprising at least one of a hydrophilic |
| 5286694 |
Lanthanide halide catalyst, method of producing the catalyst, and polymerization process employi |
February 15, 1994 |
| A polymerization catalyst is formed by producing a solution of a halide of scandium, yttrium, or a rare earth metal and an alcohol; contacting the solution with an organometallic compound to form a soluble complex; and contacting the soluble complex with a halide ion exchanging source. |
| 5270382 |
Compositions and applications thereof of water-soluble copolymers comprising an ampholytic imida |
December 14, 1993 |
| Polymer compositions and their applications in hostile environments for oil field operations are disclosed. The compositions contains a polymer which is copolymerized by (a) an ampholytic monomer having the formula of: ##STR1## where one and only one of the substituted groups R.sub.1 |
| 5250642 |
Copolymers of ampholytic ion pairs containing vinylic tertiary amine and olefinic comonomers |
October 5, 1993 |
| A composition of a superabsorbent polymer and a process for using the polymer to absorb an aqueous electrolyte solution are disclosed. The composition comprises repeating units derived from: (a) an ampholytic ion pair prepared from a polymerizable vinylic tertiary amine-containing mo |
| 5243008 |
Grafted copolymers highly absorbent to aqueous electrolyte solutions |
September 7, 1993 |
| The present invention provides graft copolymers that are highly absorbent to aqueous electrolyte solutions. The graft copolymer is formed by the graft polymerizing an effective amount of each of the following components together to provide a highly absorbent copolymer:(a) graft polymeriz |
| 5239002 |
Polymeric adhesive and anti-corrosion agents |
August 24, 1993 |
| In the adhesion of metallic materials to polymers, new adhesive agents of nitrogen containing hetrocyclic polymers such as compositions of imidazole-pyrridine, pyrrolidone-pyridine, and imidazole-pyrrolidone solutions have been discovered as useful. These agents also exhibit anti-cor |
| 5233114 |
Alkene addition process |
August 3, 1993 |
| A process is provided comprising contacting a hydrocarbyl alkali metal compound with a nitrogen-containing compound in the presence of propylene. Optionally, a catalytic support is used during said contacting. Optionally, at least one other alpha-olefin is present during said contact |
| 5225506 |
Superabsorbent polymers |
July 6, 1993 |
| Polymer compositions which are highly absorbent to aqueous electrolyte solutions are prepared by copolymerization of an ampholytic monomer having the formula of ##STR1## where one and only one of the substituted groups R.sub.1, R.sub.2, R.sub.3 and R.sub.4 must be a vinyl group, |
| 5219970 |
Grafted copolymers highly absorbent to aqueous electrolyte solutions |
June 15, 1993 |
| The present invention provides graft copolymers that are highly absorbent to aqueous electrolyte solutions. The graft copolymer is formed by the graft polymerizing an effective amount of each of the following components together to provide a highly absorbent copolymer:(a) graft polymeriz |
| 5216098 |
Superabsorbent crosslinked ampholytic ion pair copolymers |
June 1, 1993 |
| The present invention provides crosslinked ampholytic copolymers that are highly absorbent to aqueous electrolyte solutions. The polymers of the present invention comprise polymers formed by the copolymerization of an effective amount of each of the following components to produce a poly |
| 5214117 |
Grafted copolymers highly absorbent to aqueous electrolyte solutions |
May 25, 1993 |
| The present invention provides graft copolymers that are highly absorbent to aqueous electrolyte solutions. The graft copolymer is formed by the graft polymerizing an effective amount of each of the following components together to provide a highly absorbent copolymer:(a) graft polymeriz |
| 5210361 |
Allyl alkali metal alkene addition process |
May 11, 1993 |
| A process is provided comprising contacting a hydrocarbyl lithium with an alkali metal hydrocarbyloxide in the presence of propylene. Optionally, a catalytic support is used during said contacting. Optionally, at least one other alpha-olefin is present during said contacting.In another e |
| 5206326 |
Grafted copolymers highly absorbent to aqueous electrolyte solutions |
April 27, 1993 |
| The present invention provides graft copolymers that are highly absorbent to aqueous electrolyte solutions. The graft copolymer is formed by the graft polymerizing an effective amount of each of the following components together to provide a highly absorbent copolymer:(a) graft polymeriz |
| 5186257 |
Polymers useful in the recovery and processing of natural resources |
February 16, 1993 |
| Water-soluble polymers comprising N-vinyl amide such as an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore. Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radica |
| 5173464 |
Olefin polymerization |
December 22, 1992 |
| An olefin polymerization catalyst is prepared from titanium tetrachloride and an organolithium compound wherein the gram atom ratio of lithium to titanium is in the range of about 20/1 to about 50/1 or from a rare earth metal halide, an organolithium compound and a transition metal compo |
| 5130389 |
Superabsorbent crosslinked ampholytic ion pair copolymers containing 2-methacryloyloxyethyldimet |
July 14, 1992 |
| The present invention provides crosslinked ampholytic copolymers that are highly absorbent to aqueous electrolyte solutions. The polymers of the present invention comprise polymers formed by the copolymerization of an effective amount of each of the following components to produce a poly |
| 5116921 |
Superabsorbent crosslinked ampholytic ion pair copolymers |
May 26, 1992 |
| The present invention provides crosslinked ampholytic copolymers that are highly absorbent to aqueous electrolyte solutions. The polymers of the present invention comprises polymers formed by the copolymerization of an effective amount of each of the following components to produce a pol |
| 5110887 |
Superabsorbent crosslinked ampholytic ion pair copolymers |
May 5, 1992 |
| The present invention provides an article of manufacture which contains a crosslinked ampolytic copolymer that is highly absorbent to aqueous electrolyte solutions. The articles of manufacture of the present invention contain copolymers formed by the copolymerization of an effective |
| 5110884 |
Olefin polymerization |
May 5, 1992 |
| High activity olefin polymerization catalysts based on organolithium compounds and transition metal compounds are disclosed. In one catalyst system an organolithium compound is employed in combination with titanium tetrachloride and the Li/Ti ratio is in the range of about 20 to about 50 |
| 5109085 |
Olefin polymerization process |
April 28, 1992 |
| A process for polymerizing olefins is disclosed which makes use of a catalyst comprising a cyclopentadienyl lanthanide halide alkali metal ether complex in combination with a cocatalyst comprising an alkali or alkaline earth metal alkyl. Preferred embodiments include the use of hydro |
| 5102840 |
Olefin polymerization |
April 7, 1992 |
| High activity olefin polymerization catalysts based on organolithium compounds and transition metal compounds are disclosed. In one catalyst system an organolithium compound is employed in combination with titanium tetrachloride and the Li/Ti ratio is in the range of about 20 to about 50 |
| 5098970 |
Superabsorbent crosslinked ampholytic ion pair copolymers |
March 24, 1992 |
| The present invention provides crosslinked ampolytic copolymers that are highly absorbent to aqueous electrolyte solutions. The polymers of the present invention comprise copolymers formed by the copolymerization of an effective amount of each of the following components to produce a pol |
| 5080809 |
Polymers useful in the recovery and processing of natural resources |
January 14, 1992 |
| Water-soluble polymers comprising an N-vinyl amide such as an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore.Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radi |
| 5075399 |
Superabsorbent crosslinked ampholytic ion pair copolymers |
December 24, 1991 |
| The present invention provides crosslinked ampholytic copolymers that are highly absorbent to aqueous electrolyte solutions. The polymers of the present invention comprises polymers formed by the copolymerization of an effective amount of each of the following components to produce a pol |
| 5066739 |
Olefin polymerization with cyclopentadienyl lanthanidealkyl of hydride in presence of hydrogen |
November 19, 1991 |
| A process for polymerizing olefins using a catalyst comprising an organolanthanide compound is disclosed wherein the active lifetime of the catalyst is increased by the employment of hydrogen during the polymerization. |
| 5028673 |
Olefin polymerization |
July 2, 1991 |
| High activity olefin polymerization catalysts based on organolithium compounds and transition metal compounds are disclosed. In one catalyst system an organolithium compound is employed in combination with titanium tetrachloride and the Li/Ti ratio is in the range of about 20 to about 50 |
| 4951921 |
Polymers useful in the recovery and processing of natural resources |
August 28, 1990 |
| Water-soluble polymers comprising an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore.Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radical initiation with p |
| 4791086 |
Olefin polymerization |
December 13, 1988 |
| A process for producing a novel-highly active lanthanide containing catalyst comprising the product produced by reacting a lanthanide hydride, a Lewis acid, and an electron donor ligand with an organoaluminum cocatalyst component and its use in the polymerization of olefins, especial |
| 4699962 |
Olefin polymerization |
October 13, 1987 |
| A process for producing a novel-highly active lanthanide containing catalyst comprising the product produced by reacting a lanthanide hydride, a Lewis acid, and an electron donor ligand with an organoaluminum cocatalyst component and its use in the polymerization of olefins, especial |
| 4603171 |
Block copolymers containing polymerized lactone segments |
July 29, 1986 |
| A block copolymer containing a polymerized lactone block is obtained by first treating an alkali metal-terminated base polymer with a metal compound and further reacting the resulting product with lactone monomer. |
| 4575538 |
Olefin polymerization |
March 11, 1986 |
| A process for producing a novel-highly active lanthanide containing catalysts comprising products formed by reacting a lanthanide halide, and an electron doner ligand with an organometal cocatalyst component and its use in the polymerization of olefins, especially olefins such as ethylen |
| 4556647 |
Olefin polymerization |
December 3, 1985 |
| A process for producing a novel-highly active lanthanide containing catalyst comprising the product formed by admixing a lanthanide hydroxyhalide and an electron donor bidentate organic ligand chosen from among diamines, dihydric alcohols, and diketones with an organoaluminum cocatal |
| 4544718 |
Olefin polymerization |
October 1, 1985 |
| A process for producing a novel-highly active lanthanide containing catalyst comprising the product formed by admixing a lanthanide hydroxyhalide and an electron donor bidentate organic ligand chosen from among diamines, dihydric alcohols, and diketones with an organoaluminum cocatal |
| 4341672 |
Sulfur or peroxy cured epoxidized diene rubbers |
July 27, 1982 |
| Sulfur or peroxy cured compositions prepared from epoxidized diene rubbers. |
| 4239806 |
Laminates |
December 16, 1980 |
| An adhesvie composition comprising a block copolymer produced by the polymerization of a conjugated diene and a hydrocarbyl-substituted styrene or the polymerization of a conjugated diene, styrene, and a hydrocarbyl-substituted styrene, the block copolymer having an inherent viscosit |
| 4237246 |
Copolymers of 1,3-cyclodienes, monovinylaromatic compounds and polyvinylaromatic hydrocarbons |
December 2, 1980 |
| A 1,3-cyclodiene-monovinylaromatic copolymer is produced by polymerizing a monomer mixture comprising a 1,3-cyclodiene, a monovinylaromatic compound and a polyvinylaromatic hydrocarbon in the presence of an organolithium initiator. |
| 4223116 |
Conjugated diene polymerization process and catalyst |
September 16, 1980 |
| At least one conjugated diene is polymerized in the presence of a catalyzing amount of a catalyst consisting essentially of at least one Lewis acid and at least one cyclopolyolefin nickel complex. |
| 4179480 |
Blends of cyclodiene-containing copolymers and block copolymers having improved high temperature |
December 18, 1979 |
| Blends of a cyclodiene-containing copolymer, such as a cyclohexadiene-styrene copolymer, with a linear or radial block copolymer, such as a styrene-butadiene-styrene block copolymer, exhibit improved high temperature green tensile strength as compared to the block copolymer alone. A |
| 4178275 |
Block copolymers of dienes and hydrocarbyl-substituted styrenes as adhesives |
December 11, 1979 |
| An adhesive composition comprising a block copolymer produced by the polymerization of a conjugated diene and a hydrocarbyl-substituted styrene or the polymerization of a conjugated diene, styrene, and a hydrocarbyl-substituted styrene, the block copolymer having an inherent viscosit |
| 4138536 |
Polymerization of 1,3-cyclodiene with vinylaromatic hydrocarbon |
February 6, 1979 |
| A 1,3-cyclodiene is polymerized with a vinylaromatic hydrocarbon in the presence of a paraffin or cycloparaffin hydrocarbon diluent and an organolithium initiator. Further, polymerization of a 1,3-cyclodiene with a vinylaromatic hydrocarbon employing an organolithium initiator having a |
| 4136137 |
Block copolymers |
January 23, 1979 |
| Block copolymers and adhesive compositions comprising a block copolymer of a conjugated diene, styrene, and a hydrocarbyl-substituted styrene, the block copolymer having an inherent viscosity within the range of from about 0.5 to about 3. |
| 4135037 |
Adhesives and laminates |
January 16, 1979 |
| Adhesive compositions comprising epoxidized rubbery copolymers and rosin-based tackifiers which exhibit superior tack and which are useful in laminating structures exhibiting outstanding peel strength and good water-resistance properties. |
| 4131653 |
Epoxidized block copolymers |
December 26, 1978 |
| Copolymers produced by polymerization of a mixture comprising a 1,3-cyclodiene, an acyclic conjugated diene, and, optionally, a vinyl aromatic compound are epoxidized to form epoxidized copolymers exhibiting improved green tensile strength, moduli, and oil resistance properties in co |
| 4127710 |
Copolymerization of a 1,3-cyclodiene and a linear conjugated diene |
November 28, 1978 |
| A 1,3-cyclodiene comonomer and a linear conjugated diene comonomer are copolymerized employing a catalyst formed from a mixture comprising a triorganoaluminum compound, a nickel (II) compound and a Friedel-Crafts type cocatalyst. Also, a catalyst and a method for the production thereof |
