A multi-copolymer, methods for producing the same and using thereof in wastewater treatment application are provided. The method includes pre-mixing by mass 10-30 parts by mass of alkenyl succinic anhydrides, 10-30 parts of vinylbenzyltrimethylammonium chloride, and 10-30 parts of dimethylaminoethyl methacrylate with water to form a first mixture; reacting the first mixture comprising passing thereof through inert gases to provide reflux protection, and adding by mass 10-30 parts of vinyl acetate and 10-30 parts of acrylamide to form a second mixture, followed by heating the second mixture and adding an initiator therein to initiate the reaction. The present invention is simple, at low cost, safe, non-toxic, environmentally friendly, easy to operate, with a better water purification efficiency than that of conventional macromolecule flocculants, multi-functional, good product stability, strong adsorption bridging ability, less dosage requirement for the water treatment agent, and results in a sturdy sludge cake and easily separated flocs.

A multi-copolymer, methods for producing the same and using thereof in wastewater treatment application are provided. The method includes pre-mixing by mass 10-30 parts by mass of alkenyl succinic anhydrides, 10-30 parts of vinylbenzyltrimethylammonium chloride, and 10-30 parts of dimethylaminoethyl methacrylate with water to form a first mixture; reacting the first mixture comprising passing thereof through inert gases to provide reflux protection, and adding by mass 10-30 parts of vinyl acetate and 10-30 parts of acrylamide to form a second mixture, followed by heating the second mixture and adding an initiator therein to initiate the reaction. The present invention is simple, at low cost, safe, non-toxic, environmentally friendly, easy to operate, with a better water purification efficiency than that of conventional macromolecule flocculants, multi-functional, good product stability, strong adsorption bridging ability, less dosage requirement for the water treatment agent, and results in a sturdy sludge cake and easily separated flocs.

Disclosed herein are copolymers formed by cationic polymerization of one or more cyclic dienes and a comonomer selected from the group consisting of a monoterpene, a branched styrene, and combinations thereof, in the presence of a catalyst. Random copolymers having repeat units derived from a cyclic conjugated diene, such as 1,3-cyclohexadiene, and a comonomer such as a monoterpene, can be prepared as soluble products in hydrocarbon solvents. The copolymers can be crosslinked with various crosslinking agents to form materials having good oxidative stability and fire retardancy. The uncrosslinked and crosslinked copolymers have useful properties such as a low dissipation factor, low dielectric constants, and a good balance of thermomechanical and electrical properties that make them valuable in electronic applications.

Disclosed herein are copolymers formed by cationic polymerization of one or more cyclic dienes and a comonomer selected from the group consisting of a monoterpene, a branched styrene, and combinations thereof, in the presence of a catalyst. Random copolymers having repeat units derived from a cyclic conjugated diene, such as 1,3-cyclohexadiene, and a comonomer such as a monoterpene, can be prepared as soluble products in hydrocarbon solvents. The copolymers can be crosslinked with various crosslinking agents to form materials having good oxidative stability and fire retardancy. The uncrosslinked and crosslinked copolymers have useful properties such as a low dissipation factor, low dielectric constants, and a good balance of thermomechanical and electrical properties that make them valuable in electronic applications.

Disclosed herein are copolymers formed by cationic polymerization of one or more cyclic dienes and a comonomer selected from the group consisting of a monoterpene, a branched styrene, and combinations thereof, in the presence of a catalyst. Random copolymers having repeat units derived from a cyclic conjugated diene, such as 1,3-cyclohexadiene, and a comonomer such as a monoterpene, can be prepared as soluble products in hydrocarbon solvents. The copolymers can be crosslinked with various crosslinking agents to form materials having good oxidative stability and fire retardancy. The uncrosslinked and crosslinked copolymers have useful properties such as a low dissipation factor, low dielectric constants, and a good balance of thermomechanical and electrical properties that make them valuable in electronic applications.

The copolymerization of ethylene with a cyclic mono olefin (such as norbornene) is conducted in the presence of a catalyst system comprising a bridged hafnocene catalyst and a three part activator. The catalyst system provides excellent activity at high polymerization temperatures. Copolymers produced according to this invention have unique microstructure (with methyl branching being observed) and unique rheology.

The present application is directed to a nanocomposite organo gel having a continuous polymeric network structure, wherein polymer chains are held together by ionic interaction between polymer chain ends, interparticle chain entanglements, layered silicate surface modifier, ionic salt, and layered silicate. The present application is also directed to methods of making and using the nanocomposite organo gel.

A production method for a cyclic olefin copolymer which is capable of efficiently producing a cyclic olefin copolymer by copolymerizing monomers including a norbornene monomer and ethylene while suppressing the formation of a polyethylene-like impurity, and a catalyst composition for the copolymerization of a norbornene monomer and ethylene. Monomers including a norbornene monomer and ethylene are polymerized in the presence of a metal-containing catalyst, and the metal-containing catalyst has a structure in which a nitrogen atom is bonded to a transition metal of Group 4 of the periodic table and an atom of Group 15 of the periodic table.

A production method for a cyclic olefin copolymer which is capable of efficiently producing a cyclic olefin copolymer by copolymerizing monomers including a norbornene monomer and ethylene while suppressing the formation of a polyethylene-like impurity, and a catalyst composition for the copolymerization of a norbornene monomer and ethylene. Monomers including a norbornene monomer and ethylene are polymerized in the presence of a metal-containing catalyst, and the metal-containing catalyst has a structure in which a nitrogen atom is bonded to a transition metal of Group 4 of the periodic table and an atom of Group 15 of the periodic table.

The copolymerization of ethylene with a cyclic mono olefin (such as norbornene) is conducted in the presence of a catalyst system comprising a bridged hafnocene catalyst and a three part activator. The catalyst system provides excellent activity at high polymerization temperatures. Copolymers produced according to this invention have unique microstructure (with methyl branching being observed) and unique rheology.