Provided are an ultra-low viscosity ethylene-butene copolymer which is a copolymer derived from ethylene and butene, wherein the ethylene-butene copolymer has a density of 0.874 to 0.900 g/cm.sup.3 and a melting point of 63 to 90° C., and a composition for a hot-melt adhesive including the same. The ethylene-butene copolymer according to the present disclosure may be rapidly melted at a certain melting point or higher and may provide a low processing temperature with a significantly low viscosity. In addition, the composition for a hot-melt adhesive according to the present disclosure includes the ethylene-butene copolymer, thereby having excellent thermal resistance with high shear adhesion failure temperature and peel adhesion failure temperature and securing both excellent cohesiveness and adhesive strength.

Provided are an ultra-low viscosity ethylene-butene copolymer which is a copolymer derived from ethylene and butene, wherein the ethylene-butene copolymer has a density of 0.874 to 0.900 g/cm.sup.3 and a melting point of 63 to 90° C., and a composition for a hot-melt adhesive including the same. The ethylene-butene copolymer according to the present disclosure may be rapidly melted at a certain melting point or higher and may provide a low processing temperature with a significantly low viscosity. In addition, the composition for a hot-melt adhesive according to the present disclosure includes the ethylene-butene copolymer, thereby having excellent thermal resistance with high shear adhesion failure temperature and peel adhesion failure temperature and securing both excellent cohesiveness and adhesive strength.

The instant invention provides a polyolefin composition and method of producing the same. The olefin polymerization process according to the present invention comprises contacting one or more olefinic monomers with a biphenylphenolic polymerization catalyst under polymerization conditions and in the presence of one or more treated aluminum-based scavengers in a polymerization reactor, wherein said one or more treated aluminum-based scavengers comprise the reaction product of an alkylaluminum or an aluminoxane specie with a compound of the general Formula (I): wherein X is O, N, or S and R is alkyl, aryl, heteroalkyl, heteroaryl, or hydrogen, wherein n=1 if X is O or S and n=1 if X is N, and wherein at least one R is not a hydrogen; R.sub.n—X—H (I); thereby producing a polyolefin composition which comprises less than 50% of the oligomer level of a polyolefin composition produced in an olefin polymerization process in the presence of said one or more untreated aluminum-based scavengers.

The instant invention provides a polyolefin composition and method of producing the same. The olefin polymerization process according to the present invention comprises contacting one or more olefinic monomers with a biphenylphenolic polymerization catalyst under polymerization conditions and in the presence of one or more treated aluminum-based scavengers in a polymerization reactor, wherein said one or more treated aluminum-based scavengers comprise the reaction product of an alkylaluminum or an aluminoxane specie with a compound of the general Formula (I): wherein X is O, N, or S and R is alkyl, aryl, heteroalkyl, heteroaryl, or hydrogen, wherein n=1 if X is O or S and n=1 if X is N, and wherein at least one R is not a hydrogen; R.sub.n—X—H (I); thereby producing a polyolefin composition which comprises less than 50% of the oligomer level of a polyolefin composition produced in an olefin polymerization process in the presence of said one or more untreated aluminum-based scavengers.

This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless Long Chain Branching Factor, LCBF, greater than or equal to 0.001; a residual catalytic metal of from ≥0.03 to ≤5 ppm of hafnium, and; a dimensionless unsaturation ratio, UR, of from ≥−0.40 to ≤0.06, wherein UR is defined by the following relationship; UR=(SC.sup.U−T.sup.U)/T.sup.U, where SC.sup.U is the amount of a side chain unsaturation per 100 carbons and T.sup.U is amount of a terminal unsaturation per 100 carbons, in said ethylene interpolymer product. The disclosed ethylene interpolymer products have a melt index from about 0.3 to about 500 dg/minute, a density from about 0.855 to about 0.975 g/cc, a polydispersity (M.sub.w/M.sub.n) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI.sub.50) from about 1% to about 98%.

This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless Long Chain Branching Factor, LCBF, greater than or equal to 0.001; a residual catalytic metal of from ≥0.03 to ≤5 ppm of hafnium, and; a dimensionless unsaturation ratio, UR, of from ≥−0.40 to ≤0.06, wherein UR is defined by the following relationship; UR=(SC.sup.U−T.sup.U)/T.sup.U, where SC.sup.U is the amount of a side chain unsaturation per 100 carbons and T.sup.U is amount of a terminal unsaturation per 100 carbons, in said ethylene interpolymer product. The disclosed ethylene interpolymer products have a melt index from about 0.3 to about 500 dg/minute, a density from about 0.855 to about 0.975 g/cc, a polydispersity (M.sub.w/M.sub.n) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI.sub.50) from about 1% to about 98%.

A system and method of producing polyethylene, including: polymerizing ethylene in presence of a catalyst system in a reactor to form polyethylene, wherein the catalyst system includes a first catalyst and a second catalyst; and adjusting reactor conditions and an amount of the second catalyst fed to the reactor to control melt index (MI), density, and melt flow ratio (MFR) of the polyethylene.

A system and method of producing polyethylene, including: polymerizing ethylene in presence of a catalyst system in a reactor to form polyethylene, wherein the catalyst system includes a first catalyst and a second catalyst; and adjusting reactor conditions and an amount of the second catalyst fed to the reactor to control melt index (MI), density, and melt flow ratio (MFR) of the polyethylene.

The present invention relates to a composition for an encapsulant film including an ethylene/alpha-olefin copolymer having high volume resistance and light transmittance, and an encapsulant film using the same.

The present invention relates to a composition for an encapsulant film including an ethylene/alpha-olefin copolymer having high volume resistance and light transmittance, and an encapsulant film using the same.