The present invention provides an adhesive composition including an ethylene/alpha-olefin copolymer; and a tackifier, wherein the ethylene/alpha-olefin copolymer has narrow molecular weight distribution together with a low density and an ultra low molecular weight, minimized number of unsaturated functional groups, and particularly a small amount of vinylidene among the unsaturated functional groups, thereby showing excellent physical properties.

The present disclosure provides the use of quinolinyldiamido transition metal complexes, an activator and a metal hydrocarbenyl chain transfer agent, such as an aluminum vinyl-transfer agent, to produce long chain branched propylene polymers.

The present disclosure provides the use of quinolinyldiamido transition metal complexes, an activator and a metal hydrocarbenyl chain transfer agent, such as an aluminum vinyl-transfer agent, to produce long chain branched propylene polymers.

The present invention provides an ethylene/alpha-olefin copolymer having narrow molecular weight distribution together with a low density and an ultra low molecular weight, minimized number of unsaturated functional groups, and particularly a small amount of vinylidene among the unsaturated functional groups to show excellent physical properties, and a method for preparing the same.

Catalyst systems with single site transition metal complexes (such as quinolinyldiamide transition metal complexes), an activator, and a metal hydrocarbenyl transfer agent (preferably an aluminum vinyl-transfer agent) are disclosed for use in alkene polymerization.

A method for producing a solid catalyst component (Aa) for -olefin polymerization, which includes: bringing components (A1) to (A4) into contact with one another in an inert solvent; and without washing the contact product with an inert solvent, aging the contact product by keeping for a holding time of 3 days or more and 180 days or less, regarding the time point that all of the components (A1) to (A4) first come into contact, as a starting point.

A complex of formula (I) wherein M is zirconium or hafnium; each X independently is a sigma ligand; L is a divalent bridge selected from R.sub.2C, R.sub.2CCR.sub.2, R.sub.2Si, R.sub.2SiSiR.sub.2, R.sub.2Ge, wherein each R is independently a hydrogen atom or a C.sub.1-C.sub.20-hydrocarbyl group optionally containing one or more silicon atoms or heteroatoms of Group 14-16 of the periodic table or fluorine atoms, and optionally two R groups taken together can form a ring; R.sup.2 and R.sup.2 are each independently a C.sub.1-C.sub.20 hydrocarbyl group, OC.sub.1-hydrocarbyl group or SC.sub.1-20 hydrocarbyl group; R.sup.5 is a OC.sub.1-20 hydrocarbyl group or SC.sub.1-20 hydrocarbyl group, said R.sup.5 group being optionally substituted by one or more halo groups; R.sup.5 is hydrogen or a C.sub.1-20 hydrocarbyl group; OC.sub.1-20 hydrocarbyl group or SC.sub.1-20 hydrocarbyl group; said C.sub.1-20 hydrocarbyl group being optionally substituted by one or more halo groups; R.sup.6 and R.sup.6 are each independently a C.sub.1-20 hydrocarbyl group; C.sub.1-20 hydrocarbyl group or SC.sub.1-20 hydrocarbyl group; each R.sup.1 and R.sup.1 are independently CH.sub.2R.sup.x wherein R.sup.x are each independently H, or a C.sub.1-20 hydrocarbyl group, optionally containing heteroatoms.

##STR00001##

Disclosed is a method for producing a solid catalyst for propylene polymerization, the method comprising steps of: (1) reacting a dialkoxy magnesium with a metal halide compound in the presence of an organic solvent; (2) reacting the reaction product of step (1) with at least one internal electron donor while increasing the reaction temperature; and (3) reacting the reaction product of step (2) with a titanium halide, wherein the dialkoxy magnesium in step (1) is produced through a reaction step of reacting metal magnesium, an alcohol, and a reaction initiator.

Disclosed are a Z-N catalyst for -olefin polymerization and an application thereof, specifically, an industrial production catalyst consisting of (A) a solid catalyst component, (B) a cocatalyst organoaluminum compound and (C) an external electron donor compound and used for -olefin polymerization or copolymerization processes. The catalyst component is prepared from a transition metal such as titanium and magnesium and a composite aromatic diacid diester/1,3-diether as an internal electron donor. One or more organoaluminum compounds or a mixture thereof serve as the cocatalyst. One or more structure control agent hydrocarbyl alkoxysilicons are compounded with one or more activity regulator organic acid esters as the external electron donor capable of automatically adjusting the polymerization rate. The Z-N catalyst is used for -olefin polymerization/copolymerization, and can automatically adjust the polymerization rate at a higher polymerization temperature so as to maintain stable operation of a reactor.

Disclosed are a Z-N catalyst for -olefin polymerization and an application thereof, specifically, an industrial production catalyst consisting of (A) a solid catalyst component, (B) a cocatalyst organoaluminum compound and (C) an external electron donor compound and used for -olefin polymerization or copolymerization processes. The catalyst component is prepared from a transition metal such as titanium and magnesium and a composite aromatic diacid diester/1,3-diether as an internal electron donor. One or more organoaluminum compounds or a mixture thereof serve as the cocatalyst. One or more structure control agent hydrocarbyl alkoxysilicons are compounded with one or more activity regulator organic acid esters as the external electron donor capable of automatically adjusting the polymerization rate. The Z-N catalyst is used for -olefin polymerization/copolymerization, and can automatically adjust the polymerization rate at a higher polymerization temperature so as to maintain stable operation of a reactor.