Abstract: The present invention relates to a process for producing ultrahigh molecular weight polymer in powder form which is highly efficient drag reducing polymer. The process consists of polymerizing using titanium halide-based catalyst, co-catalyst, optionally a solvent, and monomer to a polymerization reactor, having stirring device and inlet charging and discharge outlet. The resulting ultrahigh molecular weight drag reducing polymers is free flowing, having intrinsic viscosity >10 dL/g. The process reduces polymerization time, temperature, and achieves high conversion, i.e., >90%.

Abstract: The present invention relates to a process for preparation of a catalyst for polymerization of olefins. The catalyst has a particle size of between 5 to 30 microns with activity ranging from 3-4 Kg (co)polymer per g of catalyst and excellent hydrogen response. The method for preparation of the catalyst comprises the steps of: a) contacting a liquid magnesium complex, an electron donor, and a titanium halide compound to form a solution; b) obtaining the solid uniform catalyst particles by precipitation; and c) washing the catalyst particles to obtain solid uniform catalyst., for producing (co)polymer of ethylene with other olefins have fines less than 10 wt. %.

Abstract: A method for mitigating crack propagation during manufacture of semiconductor dies, and associated systems and methods are disclosed herein. The method includes forming holes into a first side of a wafer substrate opposite a second side. The wafer substrate has active components at the second side. Each hole extends from the first side towards the second side an extend to an intermediate depth within the wafer substrate such that a bottom of the holes is spaced vertically apart from the active components on the second side. The holes are configured to inhibit cracks in the wafer substrate from propagating longitudinally across the wafer substrate. The method also includes backgrinding the first side of the wafer substrate to thin the wafer substrate after forming the holes. The method also includes dicing the wafer substrate after backgrinding to separate individual semiconductor dies from each other.

Abstract: The present invention relates to a process for preparation of a catalyst for polymerization of olefins. The catalyst has a particle size of between 5 to 30 microns with activity ranging from 3-4 Kg (co)polymer per g of catalyst and excellent hydrogen response. The method for preparation of the catalyst comprises the steps of: a) contacting a liquid magnesium complex, an electron donor, and a titanium halide compound to form a solution; b) obtaining the solid uniform catalyst particles by precipitation; and c) washing the catalyst particles to obtain solid uniform catalyst., for producing (co)polymer of ethylene with other olefins have fines less than 10 wt.%.

Abstract: The present disclosure relates to a process for producing linear alpha olefins in high yield carried out by oligomerization of ethylene in the presence of a novel catalyst composition. The catalyst composition includes Zirconium compound, an organoaluminum compound, and at least one Lewis base selected from cyclic and acyclic ethers (i.e., di-n-butyl ether and diethyl ether). The process for oligomerization of ethylene is carried out in an inert organic solvent in the presence of said catalyst composition. The process as disclosed herein provides significantly high activity of the said catalyst composition resulting in high yield of the alpha olefins (>95 wt. %) as the product and significantly minimum polymer as by-product. The process provides higher yield of C6-C10 fraction with >60 wt. %.

Abstract: A method for mitigating crack propagation during manufacture of semiconductor dies, and associated systems and methods are disclosed herein. The method includes forming holes into a first side of a wafer substrate opposite a second side. The wafer substrate has active components at the second side. Each hole extends from the first side towards the second side an extend to an intermediate depth within the wafer substrate such that a bottom of the holes is spaced vertically apart from the active components on the second side. The holes are configured to inhibit cracks in the wafer substrate from propagating longitudinally across the wafer substrate. The method also includes backgrinding the first side of the wafer substrate to thin the wafer substrate after forming the holes. The method also includes dicing the wafer substrate after backgrinding to separate individual semiconductor dies from each other.

Abstract: In an illustrative embodiment, an automated system links data files associated with loan submissions that have different identification attributes. The system may include computing systems and devices for receiving requests from a number of remote computing systems to identify loan products associated with a data file. The system can generate a matching input matrix comparing identification attributes from a first data file to identification attributes of candidate data files. The system can apply attribute matching rules to the matching input matrix to identify other data files that correspond to the same loan product as the first data file despite the data files having different identification attributes. The system can link data files corresponding to the same loan product within a data repository with a product linking key and output the linking key or other data for the loan product to a receiving computing system.

Abstract: A method for mitigating crack propagation during manufacture of semiconductor dies, and associated systems and methods are disclosed herein. The method includes forming holes into a first side of a wafer substrate opposite a second side. The wafer substrate has active components at the second side. Each hole extends from the first side towards the second side an extend to an intermediate depth within the wafer substrate such that a bottom of the holes is spaced vertically apart from the active components on the second side. The holes are configured to inhibit cracks in the wafer substrate from propagating longitudinally across the wafer substrate. The method also includes backgrinding the first side of the wafer substrate to thin the wafer substrate after forming the holes. The method also includes dicing the wafer substrate after backgrinding to separate individual semiconductor dies from each other.

Abstract: The invention relates to a method of the oligomerization of C6 and above olefin monomer whereby, at a fixed monomer/Al halide mole ratio, polyalphaolefins having desirable kinematic viscosities are prepared by controlling the oligomerization temperature. The oligomerization is carried out in presence of an oligomerizing catalyst comprising of aluminum halide and a promoter, and oligomerizing temperatures of about 10° C. to about 120° C.

Abstract: The present invention describes a catalyst composition for use as a catalyst system for an ethylene oligomerization, providing high activity and produce linear oligomer product having broad weight percent distribution i.e. C4 to C16. The catalyst composition comprises a zirconium amide compound, an organoaluminum compound and an additive. The present invention also provides a process for preparation of the zirconium amide compound comprising reacting a zirconium component having formula ZrXm.nTHF, wherein X is halogen atom; m is an integer having value equal or less than 4 and n is a number equal or less than 2, and a substituted amide of formula RCONR?R?, wherein R, R? and R? are saturated or unsaturated aliphatic C1-C10 hydrocarbon or aromatic C6-C14 hydrocarbon, in the presence of an organic solvent.

Abstract: The present invention relates to a process for producing ultrahigh molecular weight polymer in powder form which is highly efficient drag reducing polymer. The process consists of polymerizing using titanium halide-based catalyst, co-catalyst, optionally a solvent, and monomer to a polymerization reactor, having stirring device and inlet charging and discharge outlet. The resulting ultrahigh molecular weight drag reducing polymers is free flowing, having intrinsic viscosity >10 dL/g. The process reduces polymerization time, temperature, and achieves high conversion, i.e., >90%.

Abstract: The invention relates to a method of the oligomerization of C6 and above olefin monomer whereby, at a fixed monomer/Al halide mole ratio, polyalphaolefins having desirable kinematic viscosities are prepared by controlling the oligomerization temperature. The oligomerization is carried out in presence of an oligomerizing catalyst comprising of aluminum halide and a promoter, and oligomerizing temperatures of about 10° C. to about 120° C.

Abstract: The present invention describes a catalyst composition for use as a catalyst system for an ethylene olisomerization, providing high activity and produce linear oligomer product having broad weight percent distribution i.e. C4 to C16. The catalyst composition comprises a zirconium amide compound, an organoaluminum compound and an additive. The present invention also provides a process for preparation of the zirconium amide compound comprising reacting a zirconium component having formula ZrXmnTHF, wherein X is halogen atom; m is an integer having value equal or less than 4 and n is a number equal or less than 2, and a substituted amide of formula RCONR?R?, wherein R, R? and R? are saturated or unsaturated aliphatic C1-C10 hydrocarbon or aromatic C6-C14 hydrocarbon, in the presence of an organic solvent.

Abstract: The present invention provides an external electron donor composition comprising essentially of monoether as activity limiting agent for polymerization of olefins along with alkoxy silane as selectivity controlling agent, wherein mole percentage of the alkoxy silane to monoether is from 1 to 100.

Abstract: The present invention provides a solid organomagnesium precursor having formula {Mg(OR?)X}.a{MgX2}.b{Mg(OR?)2}.c{R?OH}, wherein R? is selected from a hydrocarbon group, X is selected from a halide group, and a:b:c is in range of 0.01-0.5:0.01-0.5:0.01-5 and process for preparing the same, said process comprising contacting a magnesium source with a solvating agent, an organohalide and an alcohol to obtain the solid organomagnesium precursor. The present invention also provides a process for preparing a catalyst system using the organomagnesium precursor and its use thereof for polymerization of olefins.

Abstract: The present invention provides an external electron donor composition comprising essentially of monoether as activity limiting agent for polymerization of olefins along with alkoxy silane as selectivity controlling agent, wherein mole percentage of the alkoxy silane to monoether is from 1 to 100.

Abstract: The present invention provides a solid organomagnesium precursor having formula {Mg(OR?)X}.a{MgX2}.b{Mg(OR?)2}.c{R?OH}, wherein R? is selected from a hydrocarbon group, X is selected from a halide group, and a:b:c is in range of 0.01-0.5:0.01-0.5:0.01-5 and process for preparing the same, said process comprising contacting a magnesium source with a solvating agent, an organohalide and an alcohol to obtain the solid organomagnesium precursor. The present invention also provides a process for preparing a catalyst system using the organomagnesium precursor and its use thereof for polymerization of olefins.

Abstract: The present invention provides a solid organomagnesium precursor having formula {Mg(OR?)X}.a{MgX2}.b{Mg(OR?)2}.c{R?OH}, wherein R? is selected from a hydrocarbon group, X is selected from a halide group, and a:b:c is in range of 0.01-0.5:0.01-0.5:0.01-5 and process for preparing the same, said process comprising contacting a magnesium source with a solvating agent, an organohalide and an alcohol to obtain the solid organomagnesium precursor. The present invention also provides a process for preparing a catalyst system using the organomagnesium precursor and its use thereof for polymerization of olefins.

Abstract: The present invention relates to a process for preparing ultra-high molecular weight polyalphaolefin. The process consists of polymerizing alphaolefin monomers using the catalyst system consisting of supported Ziegler-Natta catalyst without internal donor in presence of co-catalyst based on alkyl aluminums. The resulting ultra-high molecular weight polyalphaolefins having intrinsic viscosity ?10 dL/g are used as drag reducing polymers for increasing throughput in the pipelines by reducing frictional resistance in turbulent flow.

Abstract: A catalyst composition for use as precursor for Ziegler-Natta catalyst system, said catalyst composition comprising a combination of magnesium moiety, titanium moiety and an internal donor containing at least one 1,2-phenylenedioate compound of structure (A). Also, the present invention provides a process for preparing the aforesaid catalyst composition. Further, the present invention provides a Ziegler-Natta catalyst system incorporating the aforesaid catalyst composition and a method for polymerizing and/or copolymerizing olefins using the Ziegler-Natta catalyst system.