METAL COMPLEXES

METHOD OF PREPARING A MOLECULAR CATALYST

POLYETHYLENE COMPOSITION

METHOD TO PREPARE ETHYLENE COPOLYMERS

zirconocene catalyst system spray dried

CATALYST COMPOSITION COMPRISING SHUTTLING AGENT FOR ETHYLENE MULTI-BLOCK COPOLYMER FORMATION

CATALYST COMPOSITION COMPRISING SHUTTLING AGENT FOR ETHYLENE MULTI-BLOCK COPOLYMER FORMATIONA composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent. FIG. 1 ...

POLYMERIZATION CATALYSTS WITH IMPROVED ETHYLENE ENCHAINMENT

POLYETHYLENE COPOLYMERS HAVING A PARTICULAR COMONOMER DISTRIBUTION

synthesis of organic compounds and cyclic metallocenes

synthesis of organic compounds and cyclic metallocenes

CATALYST COMPOSITION COMPRISING SHUTTLING AGENT FOR ETHYLENE MULTI-BLOCK COPOLYMER FORMATION

CATALYST COMPOSITION COMPRISING SHUTTLING AGENT FOR ETHYLENE MULTI-BLOCK COPOLYMER FORMATIONA composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent. FIG. 1 ...

CEMENTING COMPOSITION COMPRISING HYDROPHOBICALLY MODIFIED CELLULOSE ESTERS AND METHOD FOR CEMENTING A CASING IN A BOREHOLE OF A WELL

Se divulga una composición y un método para la cementación de una tubería de revestimiento en un orificio de perforación de un pozo usando una composición cementante acuosa que comprende (a) agua, (b) una composición cementante que comprende (i) un cemento hidráulico, (ii) un polímero modificado hidrofobamente, (iii) un dispersante, y opcionalmente (iv) uno o más de otros aditivos agregados convencionalmente a las composiciones cementantes acuosas útiles en la cementación de tuberías de revestimiento en el orificio de perforación de pozos. Preferentemente la hidroxietilcelulosa modificada hidrofobamente tiene una sustitución molar de óxido de etileno desde 0,5 a 3,5, un grado de sustitución hidrófobo de desde 0,001 a 0,025, y un peso molecular promedio en peso de desde 500.000 a 4.000.000 Daltons y el dispersante es un polímero sulfonatado, un condensado de melamina-formaldehído, un condensado de naftaleno-formaldehído, un polímero de policarboxilato ramificado o no ramificado. Preferentemente ...

synthesis of organic compounds and cyclic metallocenes

BIMODAL POLYETHYLENE RESINS

Formulaciones de polietileno para aplicaciones de moldeo por soplado de piezas grandes

En varias modalidades, la formulación de polietileno tiene una densidad mayor de 0,940 g/cm3 cuando se mide de acuerdo con ASTM D792, y un índice de fusión de alta carga (I21) de 1,0 g/10 min a 10,0 g/10 min cuando se mide de acuerdo con ASTM D1238 en 190 °C y una carga de 21,6 kg. Además, la formulación de polietileno tiene un peso molecular pico (Mp(GPC)) de menos de 50.000 g/mol, un peso molecular promedio en número (Mn(GPC)) de menos de 30.000 g/mol, y una fracción en peso (w1) de peso molecular (MW) menor de 10.000 g/mol menor o igual a 10,5 % en peso, según lo determinado por cromatografía de permeación en gel (GPC). También se proporcionan artículos fabricados a partir de la formulación de polietileno, tales como artículos fabricados mediante procesos de moldeo por soplado.

POLYETHYLENE COMPOSITION

Interpolymers Suitable for Multilayer Films

The present invention relates to compositions and processes of making and using interpolymers having a controlled molecular weight distribution. Multilayer films and film layers derived from novel ethylene/α-olefin interpolymers are also disclosed. 1. (canceled)2. An ethylene/α-olefin interpolymer which has(i) a DSC curve characterized by an area under the DSC curve from the melting peak temperature to the end of melting is at least about 17% of the total area under the DSC melting curve from −20° C. to the end of melting;(ii) a density from about 0.875 g/cc to about 0.915 g/cc; and{'sub': 10', '2, '(iii) a I/Ifrom 5.5 to 6.5.'}3. The ethylene/α-olefin interpolymer of having less than 0.01 long chain branches per 1000 carbon atoms.4. The ethylene/α-olefin interpolymer of which has a DSC curve characterized by an area under the DSC curve from the melting peak temperature to the end of melting is at least about 18% of the total area under the DSC melting curve from −20° C. to the end of melting.5. The ethylene/α-olefin interpolymer of which has a DSC curve characterized by an area under the DSC curve from the melting peak temperature to the end of melting is from at least about 18% to about 35% of the total area under the DSC melting curve from −20° C. to the end of melting.6. The ethylene/α-olefin interpolymer of which has a DSC curve characterized by an area under the DSC curve from the melting peak temperature to the end of melting is at least about 20% of the total area under the DSC melting curve from −20° C. to the end of melting.7. The ethylene/α-olefin interpolymer of which has a density from about 0.895 g/cc to about 0.910 g/cc.8. The ethylene/α-olefin interpolymer of wherein the I/Iis from about 5.6 to about 6.3.9. The ethylene/α-olefin interpolymer of wherein the interpolymer has a molecular weight distribution in the range from about 2.0 to about 3.8.10. The ethylene/α-olefin interpolymer of wherein the interpolymer has a molecular weight distribution in ...

Catalyst Composition Comprising Shuttling Agent for Ethylene Multi-Block Copolymer Formation

A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: 1. A dispersion comprising:an ethylene/α-olefin multi-block interpolymer; anda dispersing agent.2. The dispersion of wherein the ethylene/α-olefin multi-block interpolymer has a Mw/Mn from 1.7 to 3.5 claim 1 , a melting point claim 1 , Tm claim 1 , in degrees Celsius claim 1 , and density claim 1 , d claim 1 , in grams/cubic centimeter claim 1 , wherein{'br': None, 'i': Tm>−', 'd', 'd, 'sup': '2', '2000.9+4538.5()−2422.2().'}3. The dispersion of wherein dispersing agent is a salt of a fatty acid of carbon chain length greater than 12 carbon atoms.4. The dispersion of wherein the ethylene/α-olefin multi-block interpolymer has an average particle size from 0.2 microns to 25 microns.5. The dispersion of wherein the dispersion is an aqueous dispersion.6. A froth comprising:an ethylene/α-olefin multi-block interpolymer;a dispersing agent; anda surfactant.7. The froth of wherein the ethylene/α-olefin multi-block interpolymer has a Mw/Mn from 1.7 to 3.5 claim 6 , a melting point claim 6 , Tm claim 6 , in degrees Celsius claim 6 , and density claim 6 , d claim 6 , in grams/cubic centimeter claim 6 , wherein{'br': None, 'i': Tm>−', 'd', 'd, 'sup': '2', '2000.9+4538.5()−2422.2().'}8. The froth of wherein dispersing agent is a salt of a fatty acid of carbon chain length greater than 12 carbon atoms.9. The froth of wherein the surfactant is selected from the group consisting of a cationic surfactant claim 6 , an anionic surfactant claim 6 , and a nonionic surfactant.10. The froth of wherein the surfactant is an anionic surfactant selected from the group consisting of carboxylic acid salts and ester amides of carboxylic fatty acids.11. The froth of ...

OIL RECOVERY

Embodiments of the present disclosure include performing one or more oil recovery cycles that recovers oil from an oil containing reservoir. The one or more oil recovery cycles can include providing a flow of supercritical carbon dioxide to the oil containing reservoir, injecting a flow of a surfactant to the flow of supercritical carbon dioxide, where the supercritical carbon dioxide and the surfactant form a mixture, forming an emulsion of the mixture in water within the oil containing reservoir to control mobility of the supercritical carbon dioxide in the oil containing reservoir, reducing the flow of the surfactant to a reduced flow while maintaining the flow of the supercritical carbon dioxide to the oil containing reservoir, and recovering the oil displaced from the oil containing reservoir. 1. A process for oil recovery , comprising: providing a flow of supercritical carbon dioxide to the oil containing reservoir;', 'injecting a flow of a surfactant to the flow of supercritical carbon dioxide, where the supercritical carbon dioxide and the surfactant form a mixture;', 'forming an emulsion of the mixture in water within the oil containing reservoir to control mobility of the supercritical carbon dioxide in the oil containing reservoir;', 'reducing the flow of the surfactant to a reduced flow while maintaining the flow of the supercritical carbon dioxide to the oil containing reservoir such that a bottom-hole pressure remains above a predetermined value; and', 'recovering the oil displaced from the oil containing reservoir., 'performing oil recovery cycles that recover oil from an oil containing reservoir, where each of the oil recovery cycles includes;'}2. The process of claim 1 , where the surfactant is soluble in the supercritical carbon dioxide and is selected from the group consisting of nonionic surfactants claim 1 , cationic surfactants claim 1 , anionic surfactants claim 1 , amphoteric surfactants claim 1 , and combinations thereof.3. The process of ...

Processes of Controlling Molecular Weight Distribution in Ethylene/Alpha-Olefin Compositions

The present invention relates to compositions and processes of making ethylene/α-olefins. More particularly, the invention relates to processes of producing ethylene/α-olefin compositions having a controlled molecular weight distribution. The molecular weight distribution is controlled, for example, by controlling the relative monomer concentrations during contact with a pre-catalyst and/or using a catalyst comprising a catalytic amount of a molecule having the structure: 2. A composition comprising an ethylene/alpha-olefin interpolymer composition with a multi-modal molecular weight distribution and one or more molecules having a gram molecular weight equal to about ((the molecular weight of an aryl or hydrocarbyl-ligand of a pre-catalyst)+28+14*X) , wherein X represents an integer from zero to 10.3. The interpolymer of claim 2 , wherein the molecule is observed by extracting the interpolymer with methylene chloride claim 2 , adding ethanol and decanting claim 2 , analyzing the decantate by gas chromatography coupled with mass spectroscopy.5. The composition of further comprising ethylene or a reaction product of said molecule and ethylene.6. The composition of further comprising an α-olefin or a reaction product of said molecule and an α-olefin.7. The composition of further comprising ethylene and an α-olefin or a reaction product of said molecule claim 4 , ethylene and an α-olefin. This application is a divisional application of U.S. application Ser. No. 11/608,171, filed on Dec. 7, 2006 which claims priority to U.S. provisional application Ser. No. 60/749,308 filed on Dec. 9, 2005, the entire content of which is incorporated by reference herein.The present invention relates to compositions and processes of making ethylene/α-olefin polymer compositions. More particularly, the invention relates to processes of producing ethylene/α-olefin compositions having a controlled molecular weight distribution.It is desirable to produce ethylene/α-olefin compositions of ...

Distannoxane Catalysts for Silane Crosslinking and Condensation Reactions

A fabricated article (e.g., jacketed or insulated wire or cable) is prepared by a process comprising the steps of: applying a coating of a moisture-curable composition onto a wire or cable; and reacting the moisture-curable composition with water, wherein the moisture-curable composition comprises at least one resin having hydrolysable reactive silane groups and a tin catalyst characterized by the tin having a +4 oxidation state and a bis(alkoxide) ligand. The product of the process includes a wire or cable comprising a jacket, wherein the jacket comprises at least one poly olefin resin having hydrolysable reactive silane groups and a tin catalyst, the tin catalyst having a bis(alkoxide) ligand and characterized by the tin having a +4 oxidation state. The product of the process also includes a wire or cable comprising a jacket wherein the jacket comprises (i) the reaction product of at least one polyolefin resin having hydrolysable reactive silane groups and water, and (ii) at least one tin catalyst, the tin catalyst having a bis(alkoxide) ligand and characterized by the tin having a +4 oxidation state. 1. An article of manufacture , comprising:A. At least one resin having hydroxyl groups, at least one compound having two or more isocyanate groups and a distannoxane tin catalyst; orB. At least one resin having isocyanate groups, at least one compound having two or more hydroxyl groups and a distannoxane tin catalyst;the distannoxane tin catalyst having a bis(alkoxide) ligand and characterized by the tin having a +4 oxidation state.2. The article of manufacture of claim 1 , wherein the distannoxane tin catalyst is penta coordinate or hexa-coordinate.3. The article of manufacture of claim 2 , wherein the distannoxane catalyst is 2 claim 2 ,2-Di-n-butyl-1 claim 2 ,3 claim 2 ,2-dioxastannolane.4. The article of manufacture of claim 1 , being one or more of a jacket claim 1 , insulation or semi-conductive layer of a wire or cable.5. The article of manufacture of claim 1 ...

AQUEOUS POUR POINT DEPRESSANT DISPERSION COMPOSITION

The present invention relates to an aqueous pour point depressant dispersion composition comprising a thermoplastic polymer, preferably ethylene vinyl acetate (EVA); a dispersing agent; water; optionally an aqueous freezing point depressant; and optionally a stabilizing agent wherein the volume average particle size of the dispersed thermoplastic polymer is equal to or less than 1 micrometers and a method to make and use said composition. 2. The aqueous pour point depressant dispersion composition of wherein the average particle size of the dispersed EVA is equal to or less than 1 micrometer claim 1 , the amount of dispersing agent in the final composition is from 1 to 10 weight percent claim 1 , and the water:aqueous freezing point depressant mixture in the final composition is present in an amount of from 40 to 75 weight percent claim 1 , the water:aqueous freezing point depressant ratio is from 40:60 to 70:30.3. The aqueous pour point depressant dispersion composition of further comprising:v a stabilizing agent in an amount of from 0.5 weight percent to 5 weight percent.4. The aqueous pour point depressant dispersion composition of wherein the polymer i is an ethylene vinyl acetate copolymer with 28 to 32 weight percent vinyl acetate claim 1 , and a melt index (determined according to ASTM D1238 at 190° C. and 2.16 kg) of 43 g/10 min.5. The aqueous pour point depressant dispersion composition of wherein the polymer i is an ethylene vinyl acetate copolymer with 40 weight percent vinyl acetate claim 1 , and a melt index (determined according to ASTM D1238 at 190° C. and 2.16 kg) of 52 g/10 min.6. The aqueous pour point depressant dispersion composition of wherein the dispersing agent ii comprises one or more of:{'sub': 1', '2', '1', '2, 'a a fatty acid/salt having the formula RCOORwherein Ris a straight chain, saturated or unsaturated, hydrocarbon radical of 8 to 25 carbon atoms and Ris H or a base-forming radical;'}b an alkyl, arene and/or alkylarene sulfonate;c a ...

Lubricant Compositions Comprising Boroxines and Sterically Hindered Amines To Improve Fluoropolymer Seal Compatibility

A lubricant composition including a boroxine compound is disclosed. A lubricant composition and additive package including a boroxine compound and a sterically hindered amine compound are also disclosed. A method of lubricating a system comprising a fluoropolymer seal with the lubricant composition is also disclosed. The boroxine compound of the lubricant composition acts to improve compatibility of the lubricant composition with a fluoropolymer seal. 2. The lubricant composition of wherein each Ris independently an alkyl group having from 1 to 5 carbon atoms.3. The lubricant composition of wherein said boroxine compound is included in an amount ranging from 0.1 to 5 wt. % based on said total weight of said lubricant composition.4. The lubricant composition of wherein at least 50 wt. % of said boroxine compound remains unreacted in said lubricant composition based on a total weight of said boroxine compound utilized to form said lubricant composition prior to any reaction in said lubricant composition.5. The lubricant composition of wherein said sterically hindered amine compound comprises at least one piperidine ring and at least one ester group.7. The lubricant composition of wherein said sterically hindered amine compound is (2 claim 1 ,2 claim 1 ,6 claim 1 ,6-tetramethyl-4-piperidyl)dodecanoate.8. The lubricant composition of wherein said sterically hindered amine compound has a total base number of at least 70 mg KOH/g when tested according to ASTM D4739.9. The lubricant composition of wherein said base oil has a viscosity ranging from 1 to 20 cSt when tested at 100° C. according to ASTM D445 and is selected from the group of API group I oils claim 1 , API group II oils claim 1 , API group III oils claim 1 , API group IV oils claim 1 , API group V oils claim 1 , and combinations thereof.10. The lubricant composition of further comprising a dispersant.11. The lubricant composition of wherein said dispersant is included in said lubricant composition in an amount ...

Lubricant Compositions Comprising Boroxines and Amine Compounds To Improve Fluoropolymer Seal Compatibility

A lubricant composition including a boroxine compound is disclosed. A lubricant composition and additive package including a boroxine compound and an amine compound are also disclosed. A method of lubricating a system comprising a fluoropolymer seal with the lubricant composition is also disclosed. The boroxine compound of the lubricant composition acts to improve compatibility of the lubricant composition with a fluoropolymer seal. 2. The lubricant composition of wherein each Ris independently an alkyl group having from 1 to 5 carbon atoms.3. The lubricant composition of wherein said boroxine compound is included in an amount ranging from 0.1 to 5 wt. % based on a total weight of said lubricant composition.4. The lubricant composition of wherein at least 50 wt. % of said boroxine compound remains unreacted in said lubricant composition based on a total weight of said boroxine compound utilized to form said lubricant composition prior to any reaction in said lubricant composition.5. The lubricant composition of wherein said amine compound is included in an amount ranging from 0.1 to 20 wt. % based on a total weight of said lubricant composition.6. The lubricant composition of wherein said amine compound comprises at least one piperidine ring and at least one ester group.7. The lubricant composition of wherein said amine compound is (2 claim 1 ,2 claim 1 ,6 claim 1 ,6-tetramethyl-4-piperidyl)dodecanoate.8. The lubricant composition of wherein said amine compound consists essentially of hydrogen claim 1 , carbon claim 1 , nitrogen claim 1 , and oxygen or wherein said amine compound consists essentially of hydrogen claim 1 , carbon claim 1 , and nitrogen.9. The lubricant composition of wherein said lubricant composition is free of a phosphate amine salt.10. The lubricant composition of wherein said base oil has a viscosity ranging from 1 to 20 cSt when tested at 100° C. according to ASTM D445 and is selected from the group of API group I oils claim 1 , API group II ...

PRODUCING POLYOLEFIN PRODUCTS

A method of polymerizing olefins is disclosed. The method comprises contacting ethylene and at least one co-monomer with a catalyst system to produce a polyolefin polymer that is multimodal. The catalyst system comprises a first catalyst that promotes polymerization of the ethylene into a low molecular weight (LMW) portion of the polyolefin polymer and a second catalyst that promotes polymerization of the ethylene into a high molecular weight (HMW) portion of the polyolefin polymer. The first catalyst and at least a portion of the second catalyst are co-supported to form a commonly-supported catalyst system and at least a portion of the second catalyst is added as a catalyst trim feed to the catalyst system. 1. A method of polymerizing olefins , comprising:contacting ethylene and at least one comonomer with a catalyst system to produce a polyolefin polymer that is multimodal, the catalyst system comprising a first catalyst that promotes polymerization of the ethylene into a low molecular weight (LMW) portion of the polyolefin polymer, and a second catalyst that promotes polymerization of the ethylene into a high molecular weight (HMW) portion of the polyolefin polymer;wherein the first catalyst and at least a portion of the second catalyst are co-supported to form a commonly-supported catalyst system; andwherein at least a portion of the second catalyst is added as a catalyst trim feed to the catalyst system, wherein a molar amount of the second catalyst added via the catalyst trim feed per gram of a dry commonly-supported catalyst system ranges from 1.8 μmol to 150 μmol.2. The method of claim 1 , wherein the commonly-supported catalyst system comprises at least one catalyst having the following structure:{'br': None, 'sup': A', 'B, 'i': 'n,', 'CpCpMX'}{'sup': A', 'B, 'wherein Cpand Cpare each independently selected from the group consisting of substituted or unsubstituted cyclopentadienyl, indenyl, tetrahydroindenyl, and fluorenyl compounds;'}{'sup': A', 'B, ' ...

Alkane-soluble non-metallocene precatalysts

A compound of formula (1) as drawn in the description, wherein M is a Group 4 metal, one R is a silicon-containing organic solubilizing group, and the other R is a silicon-containing organic solubilizing group or a silicon-free organic solubilizing group. A method of synthesizing the compound (1). A solution of compound (1) in alkane solvent. A catalyst system comprising or made from compound (1) and an activator. A method of polymerizing an olefin monomer with the catalyst system.

POLYMERIZATION CATALYSTS WITH IMPROVED ETHYLENE ENCHAINMENT

Embodiments of the present disclosure directed towards polymerization catalysts having improved ethylene enchainment. As an example, the present disclosure provides a polymerization catalyst having improved ethylene enchainment, the polymerization catalyst comprising a zirconocene catalyst of Formula (I) where Ris a Cto Calkyl, aryl or aralkyl group, wherein Ris an Cto Calkyl, aryl or aralkyl group, and where Ris a Cto Calkyl or a hydrogen, and where each X is independently a halide, Cto Calkyl, aralkyl group or hydrogen. 2. The polymerization catalyst of claim 1 , wherein Ris a Calkyl.3. The polymerization catalyst of claim 2 , wherein Ris a Calkyl.4. The polymerization catalyst of claim 3 , wherein Ris a linear Calkyl.5. The polymerization catalyst of claim 3 , wherein Ris an Calkyl.6. The polymerization catalyst of claim 2 , wherein Ris a hydrogen.7. The polymerization catalyst of claim 6 , wherein Ris an Calkyl.8. The polymerization catalyst of claim 6 , wherein Ris a Calkyl.9. The polymerization catalyst of claim 1 , wherein the polymerization catalyst of Formula I is included in a bimodal polymerization catalyst system further including a non-metallocene olefin polymerization catalyst.11. The bimodal polyethylene composition of claim 10 , wherein the low molecular weight polyethylene has a butyl branching frequency of from 0.43 to 0.72. Embodiments of the present disclosure are directed towards polymerization catalysts with improved ethylene enchainment, more specifically, embodiments are directed towards bimodal polymerization catalysts that can be utilized to form bimodal polymers with improved ethylene enchainment.Polymers may be utilized for a number of products including films and pipes, among other. Polymers can be formed by reacting one or more types of monomer in a polymerization reaction. There is continued focus in the industry on developing new and improved materials and/or processes that may be utilized to form polymers.Ethylene alpha-olefin ( ...

SPRAY-DRIED ZIRCONOCENE CATALYST SYSTEM

A spray-dried zirconocene catalyst system comprising a zirconocene catalyst and a hydrophobic fumed silica, which supports the zirconocene catalyst. A spray-drying method of making same. Polyolefins; methods of making and using same; and articles containing same. 1. A spray-dried zirconocene catalyst system consisting essentially of a zirconocene catalyst and a hydrophobic fumed silica , which supports the zirconocene catalyst , wherein the zirconocene catalyst of the spray-dried zirconocene catalyst system is made from a reaction of an activator and a zirconocene procatalyst of formula (I) , (II) , or (III): a zirconocene procatalyst of formula (I): ((R)-cyclopentadienyl)((R)-cyclopentadienyl)zirconium dichloride/dibromide/dialkyl (I) , wherein subscript x is an integer from 1 to 5; subscript y is an integer from 0 to 5; and each Rand Rindependently is methyl , ethyl , a normal-(C-C)alkyl (linear) , or an iso-(C-C)alkyl; or a zirconocene procatalyst of formula (II): ((R)-(4 ,5 ,6 ,7-tetrahydroindenyl))((R)-cyclopentadienyl)zirconium dichloride/dibromide/dialkyl (II) , wherein subscript z is an integer from 0 to 3; subscript y is an integer from 0 to 5; each Ris H or R; and each Rindependently is methyl , ethyl , a normal-(C-C)alkyl (linear) , or an iso-(C-C)alkyl; or a zirconocene procatalyst of formula (III): ((R)-(4 ,5 ,6 ,7-tetrahydroindenyl))((R)-(4 ,5 ,6 ,7-tetrahydroindenyl))zirconium dichloride/dibromide/dialkyl (III) , wherein subscript z is an integer from 0 to 3; subscript t is an integer from 0 to 3; and each Rand Rindependently is H , methyl , ethyl , or a normal-(C-C)alkyl (linear); or each of subscripts z and t independently is an integer from 1 to 3 and a first Ris in the 1-position of the 4 ,5 ,6 ,7-tetrahydroindenyl to which it is bonded and a first Ris in the 1-position of the 4 ,5 ,6 ,7-tetrahydroindenyl to which it is bonded and the first Ris covalently bonded to the first Rto form a divalent bridging group of formula Si(R) , wherein each Ris ...

Lubricant Compositions Comprising Trimethoxyboroxine To Improve Fluoropolymer Seal Compatibility

A lubricant composition including a boroxine compound is disclosed. An additive package including the boroxine compound is also disclosed. The boroxine compound of the lubricant composition acts to improve compatibility of the lubricant composition with a fluoropolymer seal. 2. The lubricant composition of wherein said boroxine compound is included in an amount ranging from 0.1 to 5 wt. % based on a total weight of said lubricant composition.3. The lubricant composition of wherein at least 50 wt. % of said boroxine compound remains unreacted in said lubricant composition based on a total weight of said boroxine compound utilized to form said lubricant composition prior to any reaction in said lubricant composition.4. The lubricant composition of wherein said lubricant composition comprises less than 0.1 wt. % of acids claim 1 , anhydrides claim 1 , triazoles claim 1 , oxides claim 1 , or combinations thereof claim 1 , based on a total weight of said lubricant composition.5. The lubricant composition of wherein said dihydrocarbyldithiophosphate salt comprises a zinc dihydrocarbyldithiophosphate salt.6. The lubricant composition of wherein said dihydrocarbyldithiophosphate salt is included in said lubricant composition in an amount ranging from 0.1 to 10 wt. % based on a total weight of said lubricant composition.7. The lubricant composition of further comprising a sterically hindered amine compound having a total base number of at least 70 mg KOH/g when tested according to ASTM D4739.9. The lubricant composition of wherein said sterically hindered amine compound is included in an amount ranging from 0.5 to 5 wt. % based on a total weight of said lubricant composition.10. The lubricant composition of wherein said sterically hindered amine compound is (2 claim 7 ,2 claim 7 ,6 claim 7 ,6-tetramethyl-4-piperidyl)dodecanoate.11. The lubricant composition of wherein said base oil has a viscosity ranging from 1 to 20 cSt when tested at 100° C. according to ASTM D445 and is ...

Lubricant Compositions Comprising Trimethoxyboroxines and Amine Compounds To Improve Fluoropolymer Seal Compatibility

A lubricant composition including a boroxine compound is disclosed. An additive package including the boroxine compound is also disclosed. The lubricant composition and the additive package may additionally include an amine compound. The boroxine compound of the lubricant composition acts to improve compatibility of the lubricant composition with a fluoropolymer seal. 2. The lubricant composition of wherein said boroxine compound is included in an amount ranging from 0.1 to 5 wt. % based on a total weight of said lubricant composition.3. The lubricant composition of wherein at least 50 wt. % of said boroxine compound remains unreacted in said lubricant composition based on a total weight of said boroxine compound utilized to form said lubricant composition prior to any reaction in said lubricant composition.4. The lubricant composition of wherein said amine compound is included in an amount ranging from 0.1 to 20 wt. % based on a total weight of said lubricant composition.5. The lubricant composition of wherein said amine compound comprises at least one piperidine ring and at least one ester group.6. The lubricant composition of wherein said amine compound is (2 claim 1 ,2 claim 1 ,6 claim 1 ,6-tetramethyl-4-piperidyl) dodecanoate.7. The lubricant composition of wherein said amine compound consists essentially of hydrogen claim 1 , carbon claim 1 , nitrogen claim 1 , and oxygen or wherein said amine compound consists essentially of hydrogen claim 1 , carbon claim 1 , and nitrogen.8. The lubricant composition of wherein said lubricant composition is free of a phosphate amine salt.9. The lubricant composition of wherein said base oil has a viscosity ranging from 1 to 20 cSt when tested at 100° C. according to ASTM D445 and is selected from the group of API group I oils claim 1 , API group II oils claim 1 , API group III oils claim 1 , API group IV oils claim 1 , API group V oils claim 1 , and combinations thereof.10. The lubricant composition of further comprising a ...

METHOD OF PREPARING A MOLECULAR CATALYST

Method of preparing a molecular catalyst from a mixture comprising a (C-C)alkane, a spray-dried alkylaluminoxane, and a molecular procatalyst. Molecular catalysts prepared by the method may be screened. 1. A method of preparing a molecular catalyst , the method comprising mixing under activating conditions a molecular procatalyst , a spray-dried alkylaluminoxane on hydrophobic fumed silica (sdAAO/HFS) , and a (C-C)alkane to give a catalyst system comprising a molecular catalyst in the (C-C)alkane.2. The method of wherein the (C-C)alkane is a (C)alkane claim 1 , a (C)alkane claim 1 , or a mixture of a (C)alkane and a (C)alkane.3. The method of wherein the (C-C)alkane is hexane claim 1 , pentane claim 1 , or a mixture of hexane and pentane.4. The method of wherein (i) the alkylaluminoxane is methylaluminoxane (MAO); (ii) the hydrophobic fumed silica is a treated fumed silica prepared by treating an untreated fumed silica with a treating effective amount of a treating agent reactive with silicon-bonded hydroxyl groups; or (iii) both (i) and (ii).5. The method of wherein the treating agent reactive with silicon-bonded hydroxyl groups is hexamethyldisilazane; a cyclic silazane; a combination of hexamethyldisilazane and a cyclic silazane; a combination of hexamethyldisilazane in a silicone oil; a (C-C)alkyltrialkoxysilane; an alkylchlorosilane of formula RSiCl claim 4 , wherein subscript x is an integer of 0 claim 4 , 1 claim 4 , 2 claim 4 , or 3; and each R is independently a (C-C)alkyl; an alkylhydridosilane of formula RSiH claim 4 , wherein subscript y is an integer of 0 claim 4 , 1 claim 4 , 2 claim 4 , or 3; and each R is independently a (C-C)alkyl; or a combination of any two or more thereof.6. The method of wherein the treating agent reactive with silicon-bonded hydroxyl groups is hexamethyldisilazane; a combination of hexamethyldisilazane and octamethylcyclotetrasilazane; a combination of hexamethyldisilazane in a bis[trimethylsilyl-endcapped] polydimethylsiloxane ...

POLYETHYLENE COPOLYMERS HAVING A PARTICULAR COMONOMER DISTRIBUTION

Novel polyethylene copolymers having a relatively high comonomer partitioning tendency are disclosed as are methods for their preparation. The comonomer partitioning tendency is the tendency for a copolymer to have comonomer in the higher molecular weight chains. Novel metrics for describing the comonomer partitioning tendency are also disclosed. 1. A method for preparing a polyethylene copolymer having a comonomer partitioning tendency of greater than 1.16 by polymerizing ethylene and one or more comonomers in the presence of one or more catalyst compositions.2. A method according to claim 1 , wherein the one or more catalyst compositions comprises a catalyst compound having a titanium claim 1 , a zirconium or a hafnium atom.3. A method according to claim 2 , wherein the catalyst composition comprises two or more catalyst compounds comprising a titanium claim 2 , a zirconium or a hafnium atom.4. A method according to any one of to claim 2 , wherein the catalyst composition further comprises one or more activators or co-catalysts.9. A method according to any one of to wherein the catalyst composition comprises two or more of the catalyst compounds according to any one of to in any ratio.10. A method according to any one of to claim 2 , wherein the comonomer is one or more comonomers containing 3 to 16 carbon atoms.11. A method according to any one of to claim 2 , wherein the polymerization is performed in gas phase claim 2 , slurry phase claim 2 , solution phase claim 2 , high pressure or combinations thereof.12. A method according to any one of to claim 2 , wherein the polymerization is performed in a single gas phase reactor. This application is a Divisional of U.S. National Stage Application Ser. No. 15/568,662 filed Oct. 23, 2017 and published as U.S. Publication No. 2018-0155473 A1 on Jun. 7, 2018, which claims priority to International Application Number PCT/US2016/028545, filed Apr. 21, 2016 and published as WO 2016/172279 on Oct. 27, 2016, which claims the ...

BIMODAL POLYETHYLENE RESINS

A high density, high polydispersity polyethylene having improved properties, and a process of producing same. 1. An ethylene-based polymer comprising a higher molecular weight component (HMW component) and a lower molecular weight component (LMW component) , the ethylene-based polymer being characterized by a density greater than or equal to 0.949 g/cm , measured according to ASTM D792 , a ratio of Mw/Mn of from 25 to 35 , an ESCR of at least 600 hr. measured according to ASTM D-1693 , Condition B (Igepal 10%) , and by a bimodal weight average molecular weight distribution with a local minimum in a range of log (molecular weight) 4 to 6 between a peak representing the HMW component and a peak representing the LMW component , as determined by Gel Permeation Chromatography (GPC) analysis , of the ethylene-based polymer.2. The ethylene-based polymer of wherein the ethylene-based polymer has a split claim 1 , and the split of the ethylene-based polymer is from 20% to 45%.3. The ethylene-based polymer of wherein the ethylene-based polymer is a polyethylene resin and has an ESCR of at least 650 hr.4. The ethylene-based polymer of wherein the ethylene-based polymer has a melt flow ratio (I21/I5) in the range from 15 to 45 measured according to ASTM D1238 (121 and 15 measured at 190° C. and 21.6 kg or 5.0 kg weight respectively) claim 1 , and a flow index (I21) in the range from 15 to 61.5. The ethylene-based polymer of wherein the Mz/Mw of the high molecular weight component is from 3.5 to 5.6. The ethylene-based polymer of wherein the ethylene-based polymer has a Capillary Swell t1000 (sec) of at least 6 seconds.7. A composition comprising bis(2-pentamethylphenylamido)ethyl)zirconium dibenzyl claim 1 , and at least one of (methylcyclopentadienyl)(1-methyl-tetrahydroindenyl)zirconium dimethyl and (propylcyclopentadienyl)(1 claim 1 ,3-dimethyl-tetrahydroindenyl)zirconium dimethyl.8. A process for copolymerizing ethylene and one or more alpha-olefins in a single olefin ...

Bimodal polyethylene

Provided are various bimodal polyethylene, including but not limited to a bimodal polyethylene for a pipe having a density of from 0.9340 to 0.9470 gram/cubic centimeters (g/ccm), a melt index (12) of from 0.1 to 0.7 gram/10 minute, a melt flow ratio (121/12) of from 20 to 90. The bimodal polyethylene includes a high molecular weight polyethylene component and a low molecular weight polyethylene component which are a reaction product of a polymerization process performed in a single reactor and that employs a bimodal polymerization catalyst system. The bimodal polymerization catalyst system includes a bimodal catalyst system of bis(2-pentamethylphenylamido)ethyl)amine Zirconium dibenzyl and either (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloride or (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium dimethyl in a 3.0:1 molar ratio; and a trim catalyst of (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloridedimethyl in heptane added to adjust melt flow ratio of the bimodal polyethylene.

POLYETHYLENE COMPOSITION

A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same. 16.-. (canceled)7. A method of making a bimodal linear low density polyethylene composition , the method comprising contacting ethylene (monomer) and at least one (C-C)alpha-olefin (comonomer) with a mixture of a bimodal catalyst system and a trim solution in the presence of molecular hydrogen gas (H) and an inert condensing agent (ICA) in one , two or more polymerization reactors under (co)polymerizing conditions , thereby making the bimodal linear low density polyethylene composition; wherein prior to being mixed together the trim solution consists essentially of a (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium complex and an inert liquid solvent and the bimodal catalyst system consists essentially of an activator species , a non-metallocene ligand-Group 4 metal complex and a metallocene ligand-Group 4 metal complex , all disposed on a solid support; and wherein the (co)polymerizing conditions comprise a reaction temperature from 80 degrees (°) to 110° Celsius (C.); a molar ratio of the molecular hydrogen gas to the ethylene (H2/C2 molar ratio) from 0.001 to 0.050; and a molar ratio of the comonomer to the ethylene (Comonomer/C2 molar ratio) from 0.005 to 0.10.8. The method of further described by any one of limitations (i) to (vi): (i) wherein the bimodal catalyst system consists essentially of a bis(2-pentamethylphenylamido)ethyl)amine zirconium complex and (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium complex claim 7 , in a molar ratio thereof from 1.0:1.0 to 5.0:1.0 claim 7 , respectively claim 7 , and a methylaluminoxane species claim 7 , all disposed by spray-drying onto the solid support; (ii) wherein the bimodal catalyst system further consists essentially of mineral oil and the solid support is a hydrophobic fumed silica; (iii) wherein the mixture is a suspension of the bimodal catalyst ...

BIMODAL POLY(ETHYLENE-CO-1-ALKENE) COPOLYMER

A bimodal poly(ethylene-co-1-alkene) copolymer comprising a higher molecular weight poly(ethylene-co-1-alkene) copolymer component and a lower molecular weight poly(ethylene-co-1-alkene) copolymer component. The copolymer is characterized by a unique combination of features comprising, or reflected in, its density; molecular weight distributions; component weight fraction amount; viscoelastic properties; and environmental stress-cracking resistance. Additional inventive embodiments include a method of making the copolymer, a formulation comprising the copolymer and at least one additive that is different than the copolymer, a method of making a manufactured article from the copolymer or formulation; the manufactured article made thereby, and use of the manufactured article. 1. A bimodal poly(ethylene-co-1-alkene) copolymer comprising a higher molecular weight poly(ethylene-co-1-alkene) copolymer component (HMW copolymer component) and a lower molecular weight poly(ethylene-co-1-alkene) copolymer component (LMW copolymer component) , the copolymer being characterized by a combination of features comprising each of features (a) to (f) and , optionally , feature (g): (a) a density from 0.950 to 0.957 gram per cubic centimeter (g/cm) measured according to ASTM D792-13 (Method B , 2-propanol); (b) a first molecular weight distribution that is a ratio of M/Mgreater than (>) 8.0 , wherein Mis weight-average molecular weight and Mis number-average molecular weight , both measured by Gel Permeation Chromatography (GPC); (c) a weight-average molecular weight (M) greater than (>) 380 ,000 grams per mole (g/mol) , measured by GPC; (d) a number-average molecular weight (M) greater than (>) 30 ,201 g/mol , measured by GPC; (e) a high load melt index (HLMI or I) from 1 to 10 grams per 10 minutes (g/10 min.) measured according to ASTM D1238-13 (190° C. , 21.6 kg); and (f) a second molecular weight distribution that is a ratio of M/Mgreater than (>) 8.5 , wherein Mis z-average ...

Processes to Control Fouling and Improve Compositions

Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: 14-. (canceled)5. A reaction process comprising: (a) an ethylene/α-olefin multiblock interpolymer comprising at least 50 mole percent ethylene which is characterized before any crosslinking by one or more of the following characteristics:', '(1) an average block index greater than zero and up to about 1.0 and a molecular weight distribution, Mw/Mn, greater than about 1.3; or', '(2) at least one molecular fraction which elutes between 40° C. and 130° C. when fractionated using TREF, characterized in that the fraction has a block index of at least 0.5 and up to about 1; or', {'br': None, 'i': T', 'd', 'd, 'sub': 'm', 'sup': '2', '>−6553.3+13735()−7051.7(); or'}, '(3) an Mw/Mn from about 1.7 to about 3.5, at least one melting point, Tm, in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of Tm and d correspond to the relationship, [{'br': None, 'i': T>−', 'H', 'H, 'Δ0.1299(Δ)+62.81 for Δgreater than zero and up to 130 J/g,'}, {'br': None, 'i': T≧', 'H, 'Δ48° C. for Δgreater than 130 J/g,'}], '(4) an Mw/Mn from about 1.7 to about 3.5, and a heat of fusion, ΔH in J/g, and a delta quantity, ΔT, in degrees Celsius defined as the temperature difference between the tallest DSC peak and the tallest CRYSTAF peak, wherein the numerical values of ΔT and ΔH have the following relationships, 'wherein the CRYSTAF peak is determined using at least 5 percent of the cumulative polymer, and if less than 5 percent of the polymer has an identifiable CRYSTAF peak, then the CRYSTAF temperature is 30° C.; or', {'br': None, 'i': Re>', 'd, '1481−1629(); or'}, '(5) an elastic recovery, Re, in percent at 300 percent strain and 1 cycle measured with a compression-molded film of the ethylene/α-olefin ...

WELLBORE SERVICING FLUID HAVING HYDROPHOBICALLY MODIFIED POLYMERS

Embodiments of the present disclosure include a wellbore servicing fluid that includes a diluent, a hydrophobically modified polymer, and a base. The base provides the wellbore servicing fluid with a pH of greater than 10. The presence of the base in the wellbore servicing fluid helps to minimize changes in the viscosity of the wellbore servicing fluid when a deposit, or a kick, of salt is encountered during the drilling operation. 1. A wellbore servicing fluid , comprising:a diluent;a hydrophobically modified polymer; andan amount of a base, where the amount of the base adjusts a pH of the wellbore servicing fluid to greater than 10 thereby providing a viscosity that decreases no more than 33 percent of a change of viscosity in a control solution measured at 30° C., when a predefined concentration of salt is present in each of the control solution and the wellbore servicing fluid.2. The wellbore servicing fluid of claim 1 , where the amount of the base adjusts the pH of the wellbore servicing fluid to greater than 10 thereby providing a viscosity that decreases no more than 74 percent of a change of viscosity in a control solution defined as the diluent and the hydrophobically modified polymer claim 1 , measured at 30° C. claim 1 , when a predefined concentration of salt is present in each of the control solution and the wellbore servicing fluid.3. The wellbore servicing fluid of claim 1 , where the hydrophobically modified polymer is a hydrophobically modified polysaccharide.4. The wellbore servicing fluid of claim 3 , where the hydrophobically modified polysaccharide is a hydrophobically modified hydroxyethyl cellulose.5. The wellbore servicing fluid of claim 4 , where an ethylene oxide molar substitution of the hydrophobically modified hydroxyethyl cellulose is from 0.5 to 3.5.6. The wellbore servicing fluid of claim 4 , where a hydrophobe degree of substitution of the hydrophobically modified hydroxyethyl cellulose is from 0.001 to 0.025.7. The wellbore ...

Synthesis of cyclic organic compounds and metallocenes

A method comprising synthesizing a cyclic organic compound via reaction of an unsubstituted or substituted cyclopentene with an unsubstituted or substituted acrylic acid in the presence of phosphoric and/or sulfonic acid reagent to make the cyclic organic compound. Also, a method of synthesizing a ligand for a transition metal, and a related substituted ligand-metal complex and catalyst, from the unsubstituted or substituted cyclopentene and unsubstituted or substituted acrylic acid. Also, the cyclic organic compound, ligand, and substituted ligand-metal complex and catalyst synthesized thereby. Also a method of polymerizing an olefin with the catalyst to give a polyolefin, and the polyolefin made thereby.

METAL COMPLEXES

Embodiments of the present disclosure are directed towards metal complexes that can be utilized to form polymers. As an example, the present disclosure provides a metal complex of Formula (I) wherein M is Zr, Hf, or Ti; each Het is independently a heterocyclic; each L is independently a bridging group; each X is independently Cl, Br, I, or alkyl; each Ris independently selected from the group including hydrogen, alkyls, alkenyls, alkynyls, cycloalkyls, aryls, acyls, aroyls, alkoxys, aryloxys, alkylthiols, dialkylamines, alkylamidos, alkoxycarbonyls, aryloxycarbonyls, carbomoyls, alkyl- and dialkyl-carbamoyls, acyloxys, acylaminos, aroylaminos, aromatic rings, fused aromatic rings, and combinations thereof; and each n is independently an integer having a value of one to five. 3. The metal complex of claim 2 , wherein M is Zr.4. The metal complex of claim 3 , wherein each heterocyclic includes N.5. The metal complex of claim 4 , wherein the polar organic material is a ketone.6. The metal complex of claim 4 , wherein the ketone is acetone.7. A supported metal complex comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the metal complex of ;'}an activator; anda support material.8. A supported metal complex comprising:{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, 'the metal complex of ;'}an activator; anda support material.10. The method of claim 9 , wherein the metal dihalide is dibenzyldichlorozirconium etherate.12. The method of claim 11 , wherein the polar organic material is a ketone.13. A method of forming a polymer comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'contacting an olefin with a metal complex of .'}14. A method of forming a polymer comprising:{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, 'contacting an olefin with a metal complex of .'} Embodiments of the present disclosure are directed towards metal complexes, more specifically, embodiments are directed towards metal complexes that can be utilized to form polymers. ...

BIMODAL POLYETHYLENE COPOLYMER AND FILM THEREOF

A bimodal ethylene-co-1-butene copolymer consisting essentially of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by a combination of high-load melt index, melt flow ratio, and melt elasticity properties. A (blown) film consisting essentially of the bimodal ethylene-co-1-butene copolymer and having improved properties. Methods of synthesizing the bimodal ethylene-co-1-butene copolymer and making the blown film. A manufactured article comprising the bimodal ethylene-co-1-butene copolymer. 1. A bimodal ethylene-co-1-butene copolymer consisting essentially of a higher molecular weight (HMW) component and a lower molecular weight (LMW) component and , when in melted form at 190° C. , is characterized by a melt property space defined by a combination of high-load melt index (“HLMI” or “I”) , melt flow ratio I/I(“MFRS”) , and melt elasticity (G′/G″@0.1 rad/s) properties , wherein the HLMI is 8.0 to 12.0 grams per 10 minutes (g/10 min); the MFR5 is 25.0 to 37.0 , wherein the Iand Ivalues used to calculate the MFRS are each in g/10 min and are measured according to ASTM D1238-13 (190° C. , 21.6 kg , “I”; and 190° C. , 5.0 kg , “I” , respectively) , and the melt elasticity is 0.55 to 0.68 , and wherein melt elasticity=G′/G″ determined at 0.1 radian per second (rad/s) according to Melt Elasticity Test Method; and{'sub': W-HMW', 'W-HMW', 'W-LMW, 'wherein the HMW component has a weight-average molecular weight (M) greater than 425,000 g/mol; wherein the bimodal ethylene-co-1-butene copolymer has a component molecular weight spread characterized by a ratio of the weight-average molecular weight of the HMW component (M) to the weight-average molecular weight of the LMW component (M) from 35.0 to 45.0, measured according to the GPC Test Method.'}2. The bimodal ethylene-co-1-butene copolymer of wherein the melt property space of the bimodal ethylene- ...

POLYETHYLENE COPOLYMERS HAVING A PARTICULAR COMONOMER DISTRIBUTION

Novel polyethylene copolymers having a relatively high comonomer partitioning tendency are disclosed as are methods for their preparation. The comonomer partitioning tendency is the tendency for a copolymer to have comonomer in the higher molecular weight chains. Novel metrics for describing the comonomer partitioning tendency are also disclosed. 23.-. (canceled)4. A copolymer according to claim 1 , wherein the copolymer has a comonomer partitioning tendency (ξ) of greater than or equal to about 1.4.58.-. (canceled)9. A copolymer according to claim 1 , wherein the comonomer is one or more comonomers containing 3 to 16 carbon atoms.1012.-. (canceled)13. A copolymer according to claim 1 , wherein the copolymer has a melt index (I) ranging from about 0.2 to about 20.1415.-. (canceled)16. A copolymer according to claim 1 , wherein the copolymer has a melt index ratio (I/I) ranging from about 15 to about 70.17. A copolymer according to claim 1 , wherein the copolymer has a density ranging from about 0.87 g/cmto about 0.97 g/cm.18. (canceled)19. A copolymer according to claim 1 , wherein the copolymer has a polydispersity index (M/M) ranging from about 1.5 to about 20.20. A method for preparing a polyethylene copolymer having a comonomer partitioning tendency of greater than 1.3 by polymerizing ethylene and one or more comonomers in the presence of one or more catalyst compositions claim 1 , wherein the comonomer partitioning tendency measures a proclivity of the polyethylene comonomer to have comonomer in high molecular weight chains.21. A method according to claim 20 , wherein the one or more catalyst compositions comprises a catalyst compound having a titanium claim 20 , a zirconium or a hafnium atom.22. A method according to claim 21 , wherein the catalyst composition comprises two or more catalyst compounds comprising a titanium claim 21 , a zirconium or a hafnium atom.2324.-. (canceled)25. A method according to claim 20 , wherein the catalyst composition further ...

Catalyst Composition Comprising Shuttling Agent for Ethylene Multi-Block Copolymer Formation

A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: 1. An olefin interpolymer having a Mw/Mn from 1.7 to 3.5 {'br': None, 'i': y*>−', 'H, '0.1299(Δ)+62.81'}, 'a delta quantity (tallest DSC peak minus tallest CRYSTAF peak) greater than the quantity, y*, defined by the equationand a heat of fusion up to 130 J/gwherein the CRYSTAF peak is determined using at least 5 percent of the cumulative polymer, and if less than 5 percent of the polymer has an identifiable CRYSTAF peak, then the CRYSTAF temperature is 30° C., and ΔH is the numerical value of the heat of fusion in J/g.2. The olefin interpolymer of wherein the ethylene/α-olefin copolymer comprises greater than 50 mol % units derived from ethylene.3. The olefin interpolymer of wherein the ethylene/α-olefin copolymer comprises a comonomer selected from the group consisting of butene claim 2 , hexene claim 2 , and octene.4. The olefin interpolymer of wherein the ethylene/α-olefin copolymer has one and only one melting point.5. The olefin interpolymer of wherein the ethylene/α-olefin copolymer has a glass transition temperature claim 2 , Tg claim 2 , less than −25° C.6. The olefin interpolymer of comprising at least three metals.7. The olefin interpolymer of wherein at least one of the metals is hafnium. This application is a continuation of U.S. patent application Ser. No. 12/962,800, filed Dec. 8, 2010; which is a continuation of U.S. patent application Ser. No. 12/962,822, filed on Dec. 8, 2010, now U.S. Pat. No. 8,198,374, issued Jun. 12, 2012; which is a continuation of U.S. patent application Ser. No. 10/589,377, filed on Aug. 14, 2006, now U.S. Pat. No. 7,858,706, issued Dec. 28, 2010; which is a 371 U.S. National Phase entry of PCT/ ...

BIMODAL POLYETHYLENE COPOLYMER AND FILM THEREOF

A bimodal ethylene-co-1-hexene copolymer consisting essentially of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by a combination of high-load melt index, melt flow ratio, and melt elasticity properties. A blown film consisting essentially of the bimodal ethylene-co-1-hexene copolymer. A method of synthesizing the bimodal ethylene-co-1-hexene copolymer. A method of making the blown film. A manufactured article comprising the bimodal ethylene-co-1-hexene copolymer. 1. A bimodal ethylene-co-1-hexene copolymer consisting essentially of a higher molecular weight (HMW) component and a lower molecular weight (LMW) component and , when in melted form at 190° C. , is characterized by a melt property space defined by a combination of high-load melt index (“HLMI” or “I”) , melt flow ratio I/I(“MFR5”) , and melt elasticity (G′/G″ @0.1 rad/s) properties , wherein the HLMI is 7.0 to 11.0 grams per 10 minutes (g/10 min.) and is measured according to ASTM D1238-13 (190° C. , 21.6 kg); the MFR5 is 22.0 to 35.0 , wherein the Iand Ivalues used to calculate the MFR5 are each in g/10 min. and are measured according to ASTM D1238-13 (190° C. , 21.6 kg , “21”; and 190° C. , 5.0 kg , “15” , respectively) , and the melt elasticity is 0.5 to 0.8 pascals (Pa) , wherein melt elasticity=G′/G″ determined at 0.1 radian per second (rad/s) according to Melt Elasticity Test Method; and wherein the bimodal ethylene-co-1-hexene copolymer has a density from 0.9410 to 0.9550 gram per cubic centimeter (g/cm) , measured according to ASTM D792-13 , Method B.2. The bimodal ethylene-co-1-hexene copolymer of wherein the melt property space of the bimodal ethylene-co-1-hexene copolymer is further defined by any one of limitations (i) to (iii): (i) a melt index Ifrom 0.05 to 0.10 claim 1 , measured according to ASTM D1238-13 (190° C. claim 1 , 2.16 kg claim 1 , “I”); (ii) a ...

AQUEOUS POUR POINT DEPRESSANT DISPERSION COMPOSITION

The present invention relates to an aqueous pour point depressant dispersion composition comprising a thermoplastic polymer, preferably ethylene vinyl acetate (EVA); a dispersing agent; water; optionally an aqueous freezing point depressant; and optionally a stabilizing agent wherein the volume average particle size of the dispersed thermoplastic polymer is equal to or less than 1 micrometers and a method to make and use said composition. 2. The method of wherein the average particle size of the dispersed EVA is equal to or less than 1 micrometer3. The method of wherein the polymer i) is an ethylene vinyl acetate copolymer with 28 to 32 weight percent vinyl acetate claim 1 , and a melt index (determined according to ASTM D1238 at 190° C. and 2.16 kg) of 43 g/10 min.4. The method of wherein the polymer i) is an ethylene vinyl acetate copolymer with 40 weight percent vinyl acetate claim 1 , and a melt index (determined according to ASTM D1238 at 190° C. and 2.16 kg) of 52 g/10 min.5. The method of wherein a dispersing agent ii) is a sodium salt of oleic acid claim 1 , stearic acid claim 1 , behenic acid or erucic acid or a potassium salt of oleic acid claim 1 , stearic acid claim 1 , behenic acid or erucic acid claim 1 , or mixtures thereof.6. The method of further comprising the step of adding a stabilizing agent v) in an amount of from 0.5 weight percent to 5 weight percent claim 1 , wherein said stabilizing agent is selected from a polyethoxylated nonionic surfactant; a polyvinyl alcohol; or an ionomer of an ethylene acrylic acid copolymer claim 1 , an ethylene methacrylic acid copolymer claim 1 , a polyacrylic acid polymer claim 1 , a polyacrylic acid co-polymer claim 1 , or an acrylic and urethane co-polymer.7. The method of further comprising the step of adding an aqueous freezing point depressant iv) in an amount of 5 weight percent to 40 weight percent wherein said aqueous freezing point depressant is selected from sodium chloride claim 1 , potassium chloride ...

SYNTHESIS OF CYCLIC ORGANIC COMPOUNDS AND METALLOCENES

A method comprising synthesizing a cyclic organic compound via reaction of an unsubstituted or substituted cycloheptene with an unsubstituted or substituted acrylic acid in the presence of phosphoric and/or sulfonic acid reagent to make the cyclic organic compound. Also, a method of synthesizing a ligand for a transition metal, and a related substituted ligand-metal complex and catalyst, from the unsubstituted or substituted cycloheptene and unsubstituted or substituted acrylic acid. Also, the cyclic organic compound, ligand, and substituted ligand-metal complex and catalyst synthesized thereby. Also a method of polymerizing an olefin with the catalyst to give a polyolefin, and the polyolefin made thereby.

Cementing composition comprising anionically- and hydrophobically-modified cellulose ethers and its use

Disclosed is a composition and a method for cementing a casing in a borehole of a well using an aqueous cementing composition comprising (a) water, (b) a cementing composition comprising (i) a hydraulic cement, (ii) an anionically- and hydrophobically-modified polymer, (iii) a dispersant, and optionally (iv) one or more other additives conventionally added to aqueous cementing compositions useful in cementing casings in the borehole of wells. Preferably the anionically- and hydrophobically-modified hydroxyethyl cellulose has an ethylene oxide molar substitution of from 0.5 to 3.5, a hydrophobe degree of substitution of from 0.001 to 0.025, an anionic degree of substitution of from 0.001 to 1, and a weight-average molecular weight of from 100,000 to 4,000,000 Daltons and the dispersant is sulfonated polymer, melamine formaldehyde condensate, a naphthalene formaldehyde condensate, a branched or non-branched polycarboxylate polymer. Preferably, the aqueous cementing composition is pumped downwardly into said casing, pumping upwardly into the annulus surrounding said casing until said aqueous composition fills that portion of the annular space desired to be sealed, and then maintaining said aqueous cementing composition in place until the cement sets.

Polyethylene formulations for large part blow molding applications

In various embodiments, a polyethylene formulation has a density of greater than 0.940 g/cm 3 when measured according to ASTM D792, and a high load melt index (I 21 ) of 1.0 g/10 min to 10.0 g/10 min when measured according to ASTM D1238 at 190° C. and a 21.6 kg load. Moreover, the polyethylene formulation has a peak molecular weight (M p(GPC) ) of less than 50,000 g/mol, a number average molecular weight (M n(GPC) ) of less than 30,000 g/mol, and a weight fraction (w1) of molecular weight (MW) less than 10,000 g/mol of less than or equal to 10.5 wt %, as determined by Gel Permeation Chromatography (GPC). Articles made from the polyethylene formulation, such as articles made by blow molding processes are also provided.

POLYETHYLENE COMPOSITION

A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same. 1. A bimodal linear medium density polyethylene composition comprising a lower molecular weight (LMW) polyethylene component and a higher molecular weight (HMW) polyethylene component , wherein each of the LMW and HMW polyethylene components comprises ethylene-derived monomeric units and (C-C)alpha-olefin-derived comonomeric units; and wherein the bimodal linear medium density polyethylene composition is characterized by each of limitations (a) to (d): (a) a resolved bimodality showing in a chromatogram of gel permeation chromatography (GPC) of the bimodal linear medium density polyethylene composition , wherein the chromatogram shows a peak representing the HMW polyethylene component , a peak representing the LMW polyethylene component , and a resolved bimodal molecular weight distribution characterized by a local minimum in a range of Log(molecular weight) (“Log(MW)”) 1.5 to 5.0 between the peak representing the HMW polyethylene component and the peak representing the LMW polyethylene component , measured according to Bimodality Test Method; (b) a molecular mass dispersity (M/M) , D , from 5 to 30.1 , measured according to Gel Permeation Chromatography (GPC) Test Method; (c) no measurable amount of long chain branching per 1 ,000 carbon atoms (“LCB Index”) , measured according to LCB Test Method; and (d) a density from 0.930 to 0.950 gram per cubic centimeter (g/cm) , measured according to ASTM D792-13 Method B.2. The bimodal linear medium density polyethylene composition of described by any one of limitations (i) to (iii): (i) a melt index (190° C. claim 1 , 2.16 kilograms (kg) claim 1 , “MI”) from 0.1 to 5.0 grams per 10 minutes (g/10 min) claim 1 , measured according to Melt Index MITest Method; (ii) a tan delta (tan 6) from 5 to 35 claim 1 , measured at 190° C. and 0.1000 radians per second (rad/s) according to Tan Delta Test ...

POLYETHYLENE COMPOSITION

A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same. 1. A bimodal linear low density polyethylene composition comprising a lower molecular weight (LMW) polyethylene component and a higher molecular weight (HMW) polyethylene component , wherein each of the LMW and HMW polyethylene components comprises ethylene-derived monomeric units and (C-C)alpha-olefin-derived comonomeric units; and wherein the bimodal linear low density polyethylene composition is characterized by each of limitations (a) to (c): (a) a resolved bimodality showing in a chromatogram of gel permeation chromatography (GPC) of the bimodal linear low density polyethylene composition , wherein the chromatogram shows a peak representing the HMW polyethylene component , a peak representing the LMW polyethylene component , and a resolved bimodal molecular weight distribution characterized by a local minimum in a range of Log(molecular weight) (“Log(MW)”) 1.5 to 5.0 between the peak representing the HMW polyethylene component and the peak representing the LMW polyethylene component , measured according to the Bimodality Test Method; (b) a molecular mass dispersity (M/M) , D , from 5 to 30.1 , measured according to the Gel Permeation Chromatography (GPC) Test Method; and (c) no measurable , alternatively no detectable , amount of long chain branching per 1 ,000 carbon atoms (“LCB Index”) , measured according to LCB Test Method.2. The bimodal linear low density polyethylene composition of described by any one of limitations (i) to (vii): (i) a density from 0.9000 to less than (<) 0.930 gram per cubic centimeter (g/cm) claim 1 , measured according to ASTM D792-13 Method B; (ii) a melt index (190° C. claim 1 , 2.16 kilograms (kg) claim 1 , “MI”) from 0.1 to 5.0 grams per 10 minutes (g/10 min.) claim 1 , measured according to the Melt Index MITest Method; (iii) a tan delta (tan δ) from 5 to 35 claim 1 , measured at 190° C. and 0.1000 ...

POLYMERIZATION CATALYSTS

Embodiments of the present disclosure directed towards polymerization catalysts having improved ethylene enchainment and/or improved catalyst productivity. As an example, the present disclosure provides a polymerization catalyst of Formula (I), wherein each of Rto Ris independently a Cto Calkyl, aryl or aralkyl group, or a hydrogen, wherein at least one of Rto Ris not a hydrogen, wherein M is a Group 4 metal, and wherein, each X is independently a halide, Cto Calkyl, aralkyl or hydrogen 2. The polymerization catalyst of claim 1 , wherein each of R claim 1 , R claim 1 , Rand Rof Formula I is a hydrogen.3. The polymerization catalyst of claim 1 , wherein each of R claim 1 , R claim 1 , and Rof Formula I is a hydrogen.4. The polymerization catalyst of claim 1 , wherein Rand Rof Formula I together form a cycloalkyl group.5. The polymerization catalyst of claim 4 , wherein the cycloalkyl group further comprises cyclohexyl-1 claim 4 ,1 claim 4 ,4 claim 4 ,4-tetramethyl.6. The polymerization catalyst of claim 4 , wherein the Rof Formula I is a Cto Calkyl.7. The polymerization catalyst of claim 6 , wherein Rof Formula I further comprises a Cto Calkyl.8. The polymerization catalyst of claim 1 , wherein each of Rand Rof Formula I is independently a Cto Calkyl.9. The polymerization catalyst of claim 8 , wherein each of R claim 8 , R claim 8 , Rof Formula I is a hydrogen.10. The polymerization catalyst of claim 8 , wherein each of Rand Rof Formula I is a hydrogen11. The polymerization catalyst of claim 1 , wherein M of Formula I further comprises titanium claim 1 , zirconium or hafnium.13. The polyethylene composition of claim 12 , wherein the polyethylene has a weight average molecular weight from 5 claim 12 ,000 to 250 claim 12 ,000 grams/mole (g/mol).14. The polyethylene composition of claim 13 , wherein the polyethylene having the improved ethylene enchainment has a melt temperature of from 90 degrees Celsius to 136 degrees Celsius. Embodiments of the present disclosure are ...

BIMODAL POLYETHYLENE COPOLYMER COMPOSITION AND PIPE MADE THEREOF

A bimodal ethylene-co-1-hexene copolymer composition consisting of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a melt property performance defined by a combination of melt index (5 kg), melt strength, and, optionally, shear thinning properties, and, when in solid form, is characterized by a slow crack growth property performance defined by a combination of strain hardening modulus and accelerated full-notch creep test performance. A pipe consisting of the bimodal ethylene-co-1-hexene copolymer composition. A method of synthesizing the bimodal ethylene-co-1-hexene copolymer composition. A method of making the pipe. A manufactured article, which is not a pipe, comprising the bimodal ethylene-co-1-hexene copolymer composition. 1. A bimodal ethylene-co-1-hexene copolymer composition having a density from 0.945 to 0.960 gram per cubic centimeter (g/cm) , measured according to ASTM D792-13 , Method B; a molecular mass dispersity (M/M) , D , from 11.0 to 25.0 , wherein Mand Mare measured according to the Gel Permeation Chromatography (GPC) Test Method; and consisting essentially of a higher molecular weight ethylene-co-1-hexene copolymer component (HMW component) , having a molecular weight distribution (Mw/Mn) greater than 3.75 (>3.75) , and a lower molecular weight polyethylene homopolymer or a lower molecular weight ethylene-co-1-hexene copolymer component (LMW component) , wherein the LMW component has a molecular weight distribution (Mw/Mn) from 2.75 to 3.35; and having a component fraction split characterized by a weight fraction of the HMW component from 35.0 to 65.0 wt % and a weight fraction of the LMW component fraction from 65.0 to 35.0 wt % , respectively , of the combined weight of the HMW and LMW components , measured according to the GPC Test Method; and wherein when in melted form at 190° C. , the bimodal ethylene-co-1-hexene copolymer composition is ...

Lubricating Oil Compositions Containing Seal Compatibility Additives And Sterically Hindered Amines

This disclosure is directed to an additive package for a lubricant composition that provides improved fluoropolymer compatibility. The additive package comprises an amine compound and a seal compatibility additive. The disclosure is also directed to a lubricant composition comprising a base oil, an amine compound, and a seal compatibility additive. The seal compatibility additive improves the fluoropolymer seal compatibility of the resultant lubricant composition. 2. The lubricant composition of wherein said amine compound is present in an amount ranging from 0.01 to 10 wt. % based on the total weight of said lubricant composition.3. The lubricant composition of wherein said lubricant composition has a compositional TBN of at least about 6 mg KOH/g claim 2 , as measured in accordance with ASTM D-2896.4. The lubricant composition of wherein at least 10% of the compositional TBN of said lubricant composition is derived from ashless TBN sources including at least one amine compound of Formula (I).5. The lubricant composition of wherein said lubricant composition has a SASH content of no greater than 1.1 wt. % based on the total weight of said lubricant composition.6. The lubricant composition of further comprising an anti-wear additive comprising phosphorous.7. The lubricant composition of further comprising an amine dispersant.8. The lubricant composition of having a fluoropolymer seal compatibility such that a fluoropolymer seal submerged in said lubricant composition exhibits a change in elongation of from −60 to 10% or a change in tensile strength of from −50 to 10% claim 1 , when tested according to CEC L-39-T96.9. The lubricant composition of wherein said seal compatibility additive is selected from the group consisting of a boroxine compound claim 1 , an epoxide compound claim 1 , a halide compound claim 1 , a sulfonate ester compound claim 1 , and combinations thereof.10. The lubricant composition of wherein said seal compatibility additive is present in an ...

SYNTHESIS OF CYCLIC ORGANIC COMPOUNDS AND METALLOCENES

A method comprising synthesizing a cyclic organic compound via reaction of an unsubstituted or substituted cyclohexene with an unsubstituted or substituted acrylic acid in the presence of phosphoric and/or sulfonic acid reagent to make the cyclic organic compound. Also, a method of synthesizing a ligand for a transition metal, and a related substituted ligand-metal complex and catalyst, from the unsubstituted or substituted cyclohexene and unsubstituted or substituted acrylic acid. Also, the cyclic organic compound, ligand, and substituted ligand-metal complex and catalyst synthesized thereby. Also a method of polymerizing an olefin with the catalyst to give a polyolefin, and the polyolefin made thereby. 5. The method of claim 1 , wherein the phosphoric and/or sulfonic acid reagent is a polyphosphoric acid (PPA); a mixture of a phosphorous pentoxide and methanesulfonic acid (“PO/HCSOH mixture”) claim 1 , or a reaction product thereof; or a combination of a PPA and a PO/HCSOH mixture claim 1 , or a reaction product of thereof; with the proviso that when each of R1 to R3a is H and R4 is methyl claim 1 , the phosphoric and/or sulfonic acid reagent and the contacting step (A) are free of the PPA.6. The method of wherein the phosphoric and/or sulfonic acid reagent is a polyphosphoric acid (PPA); with the proviso that at least one of R1 to R3a is (C-C)alkyl or R4 is H.7. The method of claim 1 , wherein the phosphoric and/or sulfonic acid reagent is the PO/HCSOH mixture claim 1 , or a reaction product thereof.8. The method of claim 1 , wherein the phosphoric and/or sulfonic acid reagent is the combination of the PPA and the PO/HCSOH mixture claim 1 , or a reaction product thereof.9. The method of claim 1 , characterized by any one of limitations (i) to (ix): (i) wherein at least one of R1 to R3a is a (C-C)alkyl or R4 is H; (ii) wherein each of R1 to R4 is H; (iii) wherein each of R1 to R3a is H and R4 is methyl; (iv) wherein in compound (1) each of R1 claim 1 , R2 claim 1 ...

Lubricant Compositions Comprising Trimethoxyboroxines and Sterically Hindered Amines To Improve Fluoropolymer Seal Compatibilty

A lubricant composition including a boroxine compound is disclosed. A lubricant composition and additive package including a boroxine compound and a sterically hindered amine compound are also disclosed. The boroxine compound of the lubricant composition acts to improve compatibility of the lubricant composition with a fluoropolymer seal. 2. The lubricant composition of wherein said boroxine compound is included in an amount ranging from 0.1 to 5 wt. % based on said total weight of said lubricant composition.3. The lubricant composition of wherein at least 50 wt. % of said boroxine compound remains unreacted in said lubricant composition based on said total weight of said boroxine compound utilized to form said lubricant composition prior to any reaction in said lubricant composition.4. The lubricant composition of wherein said sterically hindered amine compound comprises at least one piperidine ring and at least one ester group.5. The lubricant composition of wherein said sterically hindered amine compound is (2 claim 1 ,2 claim 1 ,6 claim 1 ,6-tetramethyl-4-piperidyl) dodecanoate.6. The lubricant composition of wherein said sterically hindered amine compound has a total base number of at least 70 mg KOH/g when tested according to ASTM D4739.7. The lubricant composition of wherein said base oil has a viscosity ranging from 1 to 20 cSt when tested at 100° C. according to ASTM D445 and is selected from the group of API group I oils claim 1 , API group II oils claim 1 , API group III oils claim 1 , API group IV oils claim 1 , API group V oils claim 1 , and combinations thereof.8. The lubricant composition of further comprising a dispersant.9. The lubricant composition of wherein said dispersant is a polyalkene amine derived from a polyisobutene.10. The lubricant composition of wherein said dispersant is included in said lubricant composition in an amount ranging from 0.01 to 15 wt. % based on said total weight of said lubricant composition.11. The lubricant ...

CEMENTING COMPOSITION COMPRISING NONIONIC HYDROPHOBICALLY-MODIFIED CELLULOSE ETHERS AND ITS USE

Disclosed is a composition and a method for cementing a casing in a borehole of a well using an aqueous cementing composition comprising (a) water, (b) a cementing composition comprising (i) a hydraulic cement, (ii) a hydrophobically modified polymer, (iii) a dispersant, and optionally (iv) one or more other additives conventionally added to aqueous cementing compositions useful in cementing casings in the borehole of wells. Preferably the hydrophobically modified hydroxyethyl cellulose has an ethylene oxide molar substitution of from 0.5 to 3.5, a hydrophobe degree of substitution of from 0.001 to 0.025, and a weight-average molecular weight of from 500,000 to 4,000,000 Daltons and the dispersant is sulfonated polymer, melamine formaldehyde condensate, a naphthalene formaldehyde condensate, a branched or non-branched polycarboxylate polymer. Preferably, the aqueous cementing composition is pumped downwardly into said casing, pumped upwardly into the annulus surrounding said casing until said aqueous composition fills that portion of the annular space desired to be sealed, and then maintaining said aqueous cementing composition in place until the cement sets. 1. An aqueous cementing composition for cementing a casing in a borehole of a well comprising:(a) water and (i) a hydraulic cement,', '(ii) a hydrophobically modified polymer,', '(iii) a dispersant, and', '(iv) optionally one or more other additives conventionally added to aqueous cementing compositions useful in cementing casings in the borehole of wells., '(b) a cementing composition comprising2. A method for cementing a casing in a borehole of a well comprising the use of an aqueous cementing composition comprising:(a) water and (i) a hydraulic cement,', '(ii) a hydrophobically modified polymer,', '(iii) a dispersant, and', '(iv) optionally one or more other additives conventionally added to aqueous cementing compositions useful in cementing casings in the borehole of wells., '(b) a cementing composition ...

Method t0 make an aqueous pour point depressant dispersion composition

The present invention relates to an aqueous pour point depressant dispersion composition comprising a thermoplastic polymer, preferably ethylene vinyl acetate (EVA); a dispersing agent; water; optionally an aqueous freezing point depressant; and optionally a stabilizing agent wherein the volumn average particle size of the dispersed thermoplastic polymer is equal to or less than 1 micrometers and a method to make and use said composition.

Spray-dried zirconocene catalyst system

A spray-dried zirconocene catalyst system comprising a zirconocene catalyst and a hydrophobic fumed silica, which supports the zirconocene catalyst. A spray-drying method of making same. Polyolefins; methods of making and using same; and articles containing same.

Spray-dried zirconocene catalyst system

A spray-dried zirconocene catalyst system comprising a zirconocene catalyst and a hydrophobic fumed silica, which supports the zirconocene catalyst. A spray-drying method of making same. Polyolefins; methods of making and using same; and articles containing same.

Method of olefin polymerization using alkane-soluble non-metallocene precatalyst

A method of polymerizing an olefin monomer to make a polyolefin composition comprising a polyolefin polymer, the method comprising contacting a solution of an alkane-soluble non-metallocene precatalyst dissolved in an alkane solvent with an activator so as to make a trim catalyst comprising an alkane-soluble non-metallocene catalyst, feeding the trim catalyst, as a solution in an alkane solvent or supported on a support material as a dry powder or a slurry thereof in an alkane solvent, into a polymerization reactor, and polymerizing the olefin monomer with the trim catalyst in the polymerization reactor, thereby making the polyolefin composition.

Hafnium metallocenes having nonidentical ligands

Embodiments of the present disclosure are directed towards hafnium metallocenes having nonidentical ligands, spray-dried compositions including those hafnium metallocenes, and methods utilizing spray-dried compositions including hafnium metallocene having nonidentical ligands.

Method of olefin polymerization using alkane-soluble non-metallocene precatalyst

A method of polymerizing an olefin monomer to make a polyolefin composition comprising a polyolefin polymer, the method comprising contacting a solution of an alkane-soluble non-metallocene precatalyst dissolved in an alkane solvent with an activator so as to make a trim catalyst comprising an alkane-soluble non-metallocene catalyst, feeding the trim catalyst, as a solution in an alkane solvent or supported on a support material as a dry powder or a slurry thereof in an alkane solvent, into a polymerization reactor, and polymerizing the olefin monomer with the trim catalyst in the polymerization reactor, thereby making the polyolefin composition.

Bicyclic hafnium metallocenes having nonidentical ligands

Embodiments of the present disclosure are directed towards bicyclic hafnium metallocenes having non-identical ligands and compositions including the bicyclic hafnium metallocenes having non-identical ligands. The bicyclic hafnium metallocene having non-identical ligands is represented by formula (I): ABMX2, where: A is a bicyclic structure; and B is a cyclopentadienyl; M is hafnium; and X is a leaving group, wherein the bicyclic structure comprises a ((Cl-C6)alkyl)n-substituted Cp ring and a non-aromatic cyclic structure fused with the ((C1-C6) alkyl)n-substituted Cp ring such that the bicyclic structure includes 7 to 9 ring carbon atoms and wherein subscript n is 1, 2, or 3.

Catalyst composition comprising shuttling agent for ethylene copolymer formation

CATALYST COMPOSITION COMPRISING SHUTTLING AGENT FOR ETHYLENE COPOLYMER FORMATION A composition for use in forming a multi-block copolymer from a single polymerizable monomer, said copolymer containing therein two or more segments or blocks differing in branching index, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first olefin polymerization catalyst, (B) a second olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, at least one of catalyst (A) or catalyst (B) being capable of forming a branched polymer by means of chain walking or reincorporation of in situ formed olefinic polymer chains, and (C) a chain shuttling agent. FIG. I

PROCESS FOR PREPARING A RAMIFIED POLYMER, PROCESS FOR PREPARING A MULTI-RAMIFIED BLOCK PSEUDO AND RAMIFIED BLOCK POLYMER

processo para preparar um polímero ramificado, processo para preparar um copolímero em pseudo-bloco multi- ramificado e polímero. processo de polimerização e a composição polimérica resultante, dito processo compreendendo polimerizar um ou mais monómeros polimerizáveis por adição e um agente detranslado polimerizável na presença de pelo menos um catalisador de polimerização por adição compreendendo um composto ou complexo metálico e um co-catalisador sob condições caracterizadas pela formação de um polímero ramificado, preferivelmente compreendendo arquitetura molecular em pseudo-bloco. process for preparing a branched polymer, process for preparing a multi-branched pseudo-block copolymer and polymer. polymerization process and the resulting polymeric composition, said process comprising polymerizing one or more addition polymerizable monomers and a polymerizable detranslated agent in the presence of at least one addition polymerization catalyst comprising a metal compound or complex and a cocatalyst under characterized conditions by forming a branched polymer, preferably comprising pseudo-block molecular architecture.

Processes to control fouling and improve compositions

Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: (1) reacting said metal alkyl compound with an acid to produce a soluble metal ester; or (2) adding an ionic surfactant; or (3) adding a mixture comprising an antioxidant to the product under conditions sufficient to avoid formation of significant amounts of insoluble metal or metal compounds derived from said metal alkyl compound; or (4) purging said post-reactor heat exchanger with an inert gas under conditions to remove metal oxide from the post-reactor heat exchanger.

Alkane-soluble non-metallocene precatalysts

A compound of formula (1) as drawn herein, wherein M is a Group 4 metal and each R independently is a silicon-free organic solubilizing group. A method of synthesizing the compound (1). A solution of compound (1) in alkane solvent. A catalyst system comprising or made from compound (1) and an activator. A method of polymerizing an olefin monomer with the catalyst system.

Alkane-soluble non-metallocene precatalysts

A compound of formula (1) as drawn in the description, wherein M is a Group 4 metal, one R is a silicon-containing organic solubilizing group, and the other R is a silicon-containing organic solubilizing group or a silicon-free organic solubilizing group. A method of synthesizing the compound (1). A solution of compound (1) in alkane solvent. A catalyst system comprising or made from compound (1) and an activator. A method of polymerizing an olefin monomer with the catalyst system.

Bimodal polyethylene copolymer and film thereof

A bimodal copolymer comprises on average at least 90 weight-percent units derived from ethylene and at least 0.05 weight percent units derived from an α-olefin comonomer having from 4 to 10 carbon atoms, wherein the copolymer has the properties described herein.

Bimodal polyethylene

A bimodal polyethylene composition made with a bimodal catalyst system, wherein the bimodal polyethylene composition has from greater than 0 to 14 weight percent of polyethylene polymers having a weight-average molecular weight of from greater than 0 to 10,000 grams per mol, products made therefrom, methods of making and using same, and articles containing same.

Multimodal polyethylene composition

A bimodal polyethylene composition, products made therefrom, methods of making and using same, and articles, including bottle caps and closures, containing same.

Polyethylene composition

A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.

Bimodal polyethylene copolymer and film thereof

A bimodal ethylene- co -1-hexene copolymer consisting essentially of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by a combination of high-load melt index, melt flow ratio, and melt elasticity properties. A blown film consisting essentially of the bimodal ethylene- co -1-hexene copolymer. A method of synthesizing the bimodal ethylene- co -1-hexene copolymer. A method of making the blown film. A manufactured article comprising the bimodal ethylene- co -1-hexene copolymer.

Bimodal polyethylene copolymer composition and pipe made thereof

A bimodal ethylene-co-l-hexene copolymer composition consisting of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a melt property performance defined by a combination of melt index (5 kg), melt strength, and, optionally, shear thinning properties, and, when in solid form, is characterized by a slow crack growth property performance defined by a combination of strain hardening modulus and accelerated full-notch creep test performance. A pipe consisting of the bimodal ethylene-co-l-hexene copolymer composition. A method of synthesizing the bimodal ethylene-co-l-hexene copolymer composition. A method of making the pipe. A manufactured article, which is not a pipe, comprising the bimodal ethylene-co-l-hexene copolymer composition.

Bimodal polyethylene copolymer and film thereof

A bimodal ethylene- co -1-butene copolymer consisting essentially of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by a combination of high-load melt index, melt flow ratio, and melt elasticity properties. A (blown) film consisting essentially of the bimodal ethylene- co -1-butene copolymer and having improved properties. Methods of synthesizing the bimodal ethylene- co -1-butene copolymer and making the blown film. A manufactured article comprising the bimodal ethylene- co -1- butene copolymer.

Bimodal polyethylene homopolymer composition

A nucleating agent-free and LLDPE-free polyolefin composition for making films with enhanced barrier properties against water vapor and oxygen gas. Related aspects include formulations, manufactured articles, films, and methods.

Metal complexes

Embodiments of the present disclosure are directed towards metal complexes that can be utilized to form polymers. As an example, the present disclosure provides a metal complex of Formula (I) wherein M is Zr, Hf, or Ti; each Het is independently a heterocyclic; each L is independently a bridging group; each X is independently Cl, Br, I, or alkyl; each R 1 is independently selected from the group including hydrogen, alkyls, alkenyls, alkynyls, cycloalkyls, aryls, acyls, aroyls, alkoxys, aryloxys, alkylthiols, dialkylamines, alkylamidos, alkoxycarbonyls, aryloxycarbonyls, carbomoyls, alkyl- and dialkyl-carbamoyls, acyloxys, acylaminos, aroylaminos, aromatic rings, fused aromatic rings, and combinations thereof; and each n is independently an integer having a value of one to five.

Catalyst Composition Comprising Shuttling Agent for Regio-Irregular Multi-Block Copolymer Formation

Copolymers, especially multi-block copolymer containing therein two or more segments or blocks, are prepared by polymerizing propylene, 4-methyl-1-pentene, or another C 4-8 α-olefin in the presence of a composition comprising the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers having increased incidence of regio-irregular branching compared to the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Control of Polymer Architecture and Molecular Weight Distribution Via Multi-Centered Shuttling Agent

A process for the polymerization of one or more addition polymerizable monomers and the resulting polymer composition, said process comprising contacting an addition polymerizable monomer or mixture of monomers in a reactor or reactor zone with a composition comprising at least one polymerization catalyst and a cocatalyst under polymerization conditions, characterized in that at least a portion of said polymerization is conducted in the presence of a multi-centered shuttling agent thereby causing the composition to have a bimodal molecular weight distribution.

Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation

The present invention relates to a process for polymerization of ethylene and at least one copolymerizable comonomers to form an ethylene multi-block copolymer, which copolymer contains two or more segments or blocks differing in one or more chemical or physical properties. In addition, the present invention relates to a catalyst composition for use in this process.

Catalytic olefin block copolymers via polymerizable shuttling agent

A polymerization process and the resulting polymer composition, said process comprising polymerizing one or more addition polymerizable monomers and a polymerizable shuttling agent in the presence of at least one addition polymerization catalyst comprising a metal compound or complex and a cocatalyst under conditions characterized by the formation of a branched polymer, preferably comprising pseudo-block molecular architecture.

Catalyst composition comprising shuttling agent for ethylene copolymer formation

A composition for use in forming a multi-block copolymer from a single polymerizable monomer, said copolymer containing therein two or more segments or blocks differing in branching index, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first olefin polymerization catalyst, (B) a second olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, at least one of catalyst (A) or catalyst (B) being capable of forming a branched polymer by means of chain walking or reincorporation of in situ formed olefinic polymer chains, and (C) a chain shuttling agent.

Catalyst composition comprising shuttling agent for higher olefin multi-block copolymer formation

Copolymers, especially multi-block copolymer containing therein two or more segments or blocks differing in chemical or physical properties, are prepared by polymerizing propylene, 4-methyl- 1-pentene, or other C 4-8 α-olefin and one or more copolymerizable comonomers, especially ethylene in the presence of a composition comprising the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Polyethylene composition

A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.

Bimodal polyethylene

Provided are various bimodal polyethylene, including but not limited to a bimodal polyethylene for a pipe having a density of from 0.9340 to 0.9470 gram/cubic centimeters (g/ccm), a melt index (I2) of from 0.1 to 0.7 gram/10 minute, a melt flow ratio (I21/I2) of from 20 to 90. The bimodal polyethylene includes a high molecular weight polyethylene component and a low molecular weight polyethylene component which are a reaction product of a polymerization process performed in a single reactor and that employs a bimodal polymerization catalyst system. The bimodal polymerization catalyst system includes a bimodal catalyst system of bis(2-pentamethylphenylamido)ethyl)amine Zirconium dibenzyl and either (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloride or (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium dimethyl in a 3.0:1 molar ratio; and a trim catalyst of (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloridedimethyl in heptane added to adjust melt flow ratio of the bimodal polyethylene.

Polyethylene composition

A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.

Bimodal polyethylene resins

A high density, high polydispersity polyethylene having improved properties, and a process of producing same.

Bimodal polyethylene

A bimodal polyethylene composition made with a bimodal catalyst system, wherein the bimodal polyethylene composition has from greater than 0 to 14 weight percent of polyethylene polymers having a weight-average molecular weight of from greater than 0 to 10,000 grams per mol, products made therefrom, methods of making and using same, and articles containing same.

Carbon black-containing bimodal polyethylene composition

A carbon black-containing bimodal polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.

Bimodal polyethylene copolymer and film thereof

A bimodal ethylene- co -1-hexene copolymer consisting essentially of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by a combination of high-load melt index, melt flow ratio, and melt elasticity properties. A blown film consisting essentially of the bimodal ethylene- co -1-hexene copolymer. A method of synthesizing the bimodal ethylene- co -1-hexene copolymer. A method of making the blown film. A manufactured article comprising the bimodal ethylene- co -1-hexene copolymer.

Polyethylene formulations for large part blow molding applications

In various embodiments, a polyethylene formulation has a density of greater than 0.940g/cm3 when measured according to ASTM D792, and a high load melt index (I21) of 1.0 g/10 min to 10.0 g/10 min when measured according to ASTM D1238 at 190°C and a 21.6 kg load. Moreover, the polyethylene formulation has a peak molecular weight (Mp(GPC)) of less than 50,000 g/mol, a number average molecular weight (Mn(GPC)) of less than 30,000 g/mol, and a weight fraction (w1) of molecular weight (MW) less than 10,000 g/mol of less than or equal to 10.5 wt%, as determined by Gel Permeation Chromatography (GPC). Articles made from the polyethylene formulation, such as articles made by blow molding processes are also provided.

Bimodal polyethylene copolymer and film thereof

A bimodal ethylene-co-1-butene copolymer consisting essentially of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by a combination of high-load melt index, melt flow ratio, and melt elasticity properties. A (blown) film consisting essentially of the bimodal ethylene-co-1-butene copolymer and having improved properties. Methods of synthesizing the bimodal ethylene-co-1-butene copolymer and making the blown film. A manufactured article comprising the bimodal ethylene-co-1- butene copolymer.

Bimodal polyethylene copolymer composition and pipe made thereof

A bimodal ethylene-co-l-hexene copolymer composition consisting of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a melt property performance defined by a combination of melt index (5 kg), melt strength, and, optionally, shear thinning properties, and, when in solid form, is characterized by a slow crack growth property performance defined by a combination of strain hardening modulus and accelerated full-notch creep test performance. A pipe consisting of the bimodal ethylene-co-l-hexene copolymer composition. A method of synthesizing the bimodal ethylene-co-l-hexene copolymer composition. A method of making the pipe. A manufactured article, which is not a pipe, comprising the bimodal ethylene-co-l-hexene copolymer composition.

Metal-ligand complexes

Embodiments of the present disclosure directed towards metal-ligand complex of Formula I: wherein M is titanium, zirconium, or hafnium; R is hydrogen or a (C 1 to C 4 ) alkyl; R 1 is a (C 1 to C 4 ) alkyl ; any one or two of R 2 , R 3 , R 4 , R 5 is independently a (C 1 to C 20 ) alkyl and the three or two of R 2 , R 3 , R 4 , R 5 is H; and each X is independently a halide, a (C 1 to C 20 ) alkyl, a (C 7 to C 20 ) aralkyl, a (C 1 to C 6 ) alkyl-substituted (C 6 to C 12 ) aryl, a (C 1 to C 6 ) alkyl-substituted benzyl, or a silicon-containing alkyl.

Bimodal poly(ethylene-co-1-alkene) copolymer

A bimodal poly(ethylene- co -1-alkene) copolymer comprising a higher molecular weight poly(ethylene- co -1-alkene) copolymer component and a lower molecular weight poly(ethylene- co -1-alkene) copolymer component. The copolymer is characterized by a unique combination of features comprising, or reflected in, its density; molecular weight distributions; component weight fraction amount; and viscoelastic properties; and at least one of environmental stress-cracking resistance and resin swell. Additional inventive embodiments include a method of making the copolymer, a formulation comprising the copolymer and at least one additive that is different than the copolymer, a method of making a manufactured article from the copolymer or formulation; the manufactured article made thereby, and use of the manufactured article.

Bimodal poly(ethylene-co-1-alkene) copolymer

A bimodal poly(ethylene- co -1-alkene) copolymer comprising a higher molecular weight poly(ethylene- co -1-alkene) copolymer component and a lower molecular weight poly(ethylene- co -1-alkene) copolymer component. The copolymer is characterized by a unique combination of features comprising, or reflected in, its density; molecular weight distributions; component weight fraction amount; viscoelastic properties; and environmental stress-cracking resistance. Additional inventive embodiments include a method of making the copolymer, a formulation comprising the copolymer and at least one additive that is different than the copolymer, a method of making a manufactured article from the copolymer or formulation; the manufactured article made thereby, and use of the manufactured article.

Bimodal linear low density polyethylene copolymer

Provided are bimodal linear low density polyethylene copolymers (B-LLDPE copolymers) that have a combination of improved properties comprising at least one processability characteristic similar or better than that of an unblended monomodal ZN-LLDPE and a dart impact property similar or better than that of an unblended monomodal MCN-LLDPE. For the various aspects, the B-LLDPE copolymer has a density from 0.8900 to 0.9300 g/cm 3 ; a melt index (I 2 ) from 0.1 g/10 min. to 5 g/10 min.; a M z from 600,000 to 1,200,000 g/mol; and a hexane extractables content present in a value of up to 2.6 wt.% as measured according to ASTM D-5227:95. The B-LLDPE copolymer can be further characterized by a first melt flow ratio (I 21 /I 2 ) from 25 to 65 and a first molecular weight ratio (M z /M w ) from 3.5 to 5.5.

Chemically converted catalysts

Embodiments of the present disclosure directed towards converting a non-metallocene precatalyst into a productivity enhanced non-metallocene catalyst. As an example, the present disclosure provides a method of making an productivity enhanced non-metallocene catalyst, the method comprising combining a first non-metallocene precatalyst, an effective amount of an activator, and an effective amount of a productivity-increasing organic compound under conditions effective for the activator and the productivity-increasing organic compound to chemically convert the first non-metallocene precatalyst into the productivity enhanced non-metallocene catalyst; wherein the productivity-increasing organic compound is of formula (A), as detailed herein.

Attenuated post-metallocene catalysts

A method of making an attenuated-light-off post-metallocene catalyst ("attenuated post- metallocene catalyst" or "attenuated P-M catalyst"), the method comprising combining a faster- light-off catalyst with an effective amount of a kinetics modifier compound of formula (A1), (B 1 ), or (C 1 ): R 5 -C≡C-R 6 (A 1 ), (R 5 ) 2 C=C=C(R 6 ) 2 (B 1 ), or (R 5 )(R 7 )C=C(R 6 )(R 7 ) (C 1 ) as defined herein under effective reaction conditions to give an attenuated post-metallocene catalyst that exhibits an attenuated light-off kinetics profile (relative to that of the faster-light- off catalyst); wherein the faster-light-off catalyst has been made by activating a post- metallocene precatalyst (i.e., an unactivated "coordination entity" or "ligand-metal complex") of structural formula (I): (D) d M(T) t (Q) q (X) x (I) as defined herein; and related methods, compositions and uses.

Attenuated post-metallocene catalysts

A method of making an attenuated-light-off post-metallocene catalyst, the method comprising combining a faster-light-off catalyst with an effective amount of a kinetics modifier compound of formula (A 1 ), (B 1 ), or (C 1 ): R5-C≡C-R 6 (A 1 ), (R 5 ) 2 C=C=C(R 6 ) 2 (B 1 ), or (R 5 )(R 7 )C=C(R 6 )(R 7 ) (C 1 ) as defined herein under effective reaction conditions to give an attenuated post-metallocene catalyst that exhibits an attenuated light-off monomer uptake profile (relative to that of the faster-light-off catalyst); wherein the faster-light-off catalyst has been made by activating a post-metallocene precatalyst of structural formula (I) as defined herein; and related methods, compositions and uses.

Attenuated hybrid catalysts

A method of making an attenuated-light-off hybrid catalyst, the method comprising combining a faster-light-off catalyst with an effective amount of a kinetics modifier compound of formula (A 1 ), (B 1 ), or (C 1 ): R 5 -C≡C-R 6 (A 1 ), (R 5 ) 2 C=C=C(R 6 ) 2 (B 1 ), or (R 5 )(R 7 )C=C(R 6 )(R 7 ) (C 1 ) as defined herein under effective reaction conditions to give an attenuated hybrid catalyst that exhibits an attenuated light-off kinetics profile (relative to that of the faster-light-off catalyst); wherein the faster-light-off catalyst has been made by activating a hybrid precatalyst (i.e., an unactivated "coordination entity" or "ligand-metal complex") of structural formula (I): (Cp)(L) k (X) x (I) as defined herein; and related methods, compositions and uses.

Attenuated post-metallocene catalysts

A method of making an attenuated-light-off post-metallocene catalyst, the method comprising combining a faster-light-off catalyst with an effective amount of a kinetics modifier compound of formula (A1), (B1), or (C1): R5-C≡C-R6 (A1), (R5)2C=C=C(R6)2 (B1), or (R5)(R7)C=C(R6)(R7) (C1) as defined herein under effective reaction conditions to give an attenuated post-metallocene catalyst that exhibits an attenuated light-off monomer uptake profile (relative to that of the faster-light-off catalyst); wherein the faster-light-off catalyst has been made by activating a post-metallocene precatalyst of structural formula (I) as defined herein; and related methods, compositions and uses.

Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation

The present invention relates to a process for polymerization of ethylene and at least one copolymerizable comonomers to form an ethylene multi-block copolymer, which copolymer contains two or more segments or blocks differing in one or more chemical or physical properties. In addition, the present invention relates to a catalyst composition for use in this process.

Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation

The present invention relates to a Multi-block copolymer comprising in polymerized form ethylene and one or more copolymerizable comonomers. In addition, the invention relates to an olefin interpolymers having an MWD from 1.7 to 3.5 and being defined on the basis of DSC and CRYSTAF peaks. Further, the invention encompasses crosslinked derivates of these polymers and compositions comprising said polymers.

Catalyst composition comprising shuttling agent for regio-irregular multi-block copolymer formation

Copolymers, especially multi-block copolymer containing therein two or more segments or blocks, are prepared by polymerizing propylene, 4-methyl-1-pentene, or another C 4-8 α-olefin in the presence of a composition comprising the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers having increased incidence of regio-irregular branching compared to the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Catalyst composition comprising shuttling agent for regio-irregular multi-block copolymer formation

Copolymers, especially multi-block copolymer containing therein two or more segments or blocks, are prepared by polymerizing propylene, 4-methyl-1-pentene, or another C 4-8 α-olefin in the presence of a composition comprising the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers having increased incidence of regio-irregular branching compared to the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Catalytic Olefin Block Copolymers Via Polymerizable Shuttling Agent

A polymerization process and the resulting polymer composition, said process comprising polymerizing one or more addition polymerizable monomers and a polymerizable shuttling agent in the presence of at least one addition polymerization catalyst comprising a metal compound or complex and a cocatalyst under conditions characterized by the formation of a branched polymer, preferably comprising pseudo-block molecular architecture.

Catalytic olefin block copolymers via polymerizable shuttling agent

A polymerization process and the resulting polymer composition, said process comprising polymerizing one or more addition polymerizable monomers and a polymerizable shuttling agent in the presence of at least one addition polymerization catalyst comprising a metal compound or complex and a cocatalyst under conditions characterized by the formation of a branched polymer, preferably comprising pseudo-block molecular architecture.

Control of polymer architecture and molecular weight distribution via multi-centered shuttling agent

A process for the polymerization of one or more addition polymerizable monomers and the resulting polymer composition, said process comprising contacting an addition polymerizable monomer or mixture of monomers in a reactor or reactor zone with a composition comprising at least one polymerization catalyst and a cocatalyst under polymerization conditions, characterized in that at least a portion of said polymerization is conducted in the presence of a multi-centered shuttling agent thereby causing the composition to have a bimodal molecular weight distribution.

Polyethylene composition

A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.

Polyethylene composition

A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.

Polyethylene composition

The invention relates to a bimodal linear medium density polyethylene composition comprising a lower molecular weight (LMW) polyethylene component and a higher molecular weight (HMW) polyethylene component, wherein each of the LMW and HMW polyethylene components comprises ethylene-derived monomeric units and (C 3 -C 20 )alpha-olefin-derived comonomeric units; and wherein the bimodal linear medium density polyethylene composition is characterized by each of limitations (a) to (d): (a) a resolved bimodality showing in a chromatogram of gel permeation chromatography (GPC) of the bimodal linear medium density polyethylene composition, wherein the chromatogram shows a peak representing the HMW polyethylene component, a peak representing the LMW polyethylene component, and a resolved bimodal molecular weight distribution characterized by a local minimum in a range of Log(molecular weight) ("Log(MW)") 1.5 to 5.0 between the peak representing the HMW polyethylene component and the peak representing the LMW polyethylene component, measured according to Bimodality Test Method; (b) a molecular mass dispersity (M w /M n ), Ð M , from 5 to 30.1, measured according to Gel Permeation Chromatography (GPC) Test Method; (c) no measurable amount of long chain branching per 1,000 carbon atoms ("LCB Index"), measured according to LCB Test Method; and (d) a density from 0.930 to 0.950 gram per cubic centimeter (g/cm 3 ), measured according to ASTM D792-13 Method B.

Bimodal polyethylene

A bimodal polyethylene composition made with a bimodal catalyst system, wherein the bimodal polyethylene composition has from greater than 0 to 14 weight percent of polyethylene polymers having a weight-average molecular weight of from greater than 0 to 10,000 grams per mol, products made therefrom, methods of making and using same, and articles containing same.

Bimodal linear low density polyethylene copolymer

Provided are bimodal linear low density polyethylene copolymers (B-LLDPE copolymers) that have a combination of improved properties comprising at least one processability characteristic similar or better than that of an unblended monomodal ZN-LLDPE and a dart impact property similar or better than that of an unblended monomodal MCN-LLDPE. For the various aspects, the B-LLDPE copolymer has a density from 0.8900 to 0.9300 g/cm 3 ; a melt index (I 2 ) from 0.1 g/10 min. to 5 g/10 min.; a M z from 600,000 to 1,900,000 g/mol; and a SHI from 5.35 to 75 η*(1.0)/η*(100). The B-LLDPE copolymer can be further characterized by a first melt flow ratio (I 21 /I 2 ) from 32 to 140 and a first molecular weight ratio (M z /M w ) from 4.5 to 11.

Control of polymer architecture and molecular weight distribution via multi-centered shuttling agent

A process for the polymerization of one or more addition polymerizable monomers and the resulting polymer composition, said process comprising contacting an addition polymerizable monomer or mixture of monomers in a reactor or reactor zone with a composition comprising at least one polymerization catalyst and a cocatalyst under polymerization conditions, characterized in that at least a portion of said polymerization is conducted in the presence of a multi-centered shuttling agent thereby causing the composition to have a bimodal molecular weight distribution.

Catalytic olefin block copolymers with controlled block sequence distribution

A process for the polymerization of one or more addition polymerizable monomers and the resulting polymer products, said process comprising: 1) contacting an addition polymerizable monomer or mixture of monomers under addition polymerization conditions in a reactor or reactor zone with a composition comprising at least one olefin polymerization catalyst and a cocatalyst and characterized by the formation of polymer chains from said monomer or monomers; 2) transferring the reaction mixture to a second reactor or reactor zone and optionally adding one or more additional reactants, catalysts, monomers or other compounds prior to, commensurate with, or after said transfer; and 3) causing polymerization to occur in said second reactor or reactor zone to form polymer chains that are differentiated from the polymer chains formed in step 1); said process being characterized by addition of a chain shuttling agent to the reaction mixture prior to, during, or subsequent to step 1) such that at least some of the resulting polymer molecules from step 3) comprise two or more chemically or physically distinguishable blocks or segments.