A polyolefin-based hot melt adhesive composition made from or containing

(A) 25-75 wt. % of a copolymer of butene-1 with a Melt Flow Rate, measured according to ISO 1133 (190° C., 2.16 kg), higher than 1500; and
(B) 75-25 wt. % of at least one additional component selected from the group consisting of waxes, resins, plasticizers, additional polymers and mixtures thereof,
wherein the amounts of A) and B) are referred to the total weight of A)+B).

A metal complex of the formula (1)

InCyLMZ.sub.p  (1), wherein M is a group 4 metal Z is an anionic ligand, p is number of 1 to 2, preferably 2, InCy is an indole fused cyclopentadienyl-type ligand of the formula (2)

##STR00001## wherein R.sup.1 means for each index m individually a C.sub.1-C.sub.4-alkyl that substitutes a hydrogen atom of the benzene ring, m is a number of 0 to 4, preferably 0 to 2, in particular 0, R.sup.2 means C.sub.1-C.sub.10-alkyl, C.sub.5-C.sub.10-cycloalkyl, and an unsubstituted or C.sub.1-C.sub.10-alkyl or C.sub.1-C.sub.4-dialkyl amino substituted C.sub.6-C.sub.10-aryl, in particular C.sub.1-C.sub.4-alkyl substituted phenyl, more preferably methyl, phenyl or di-C.sub.1-C.sub.4-alkyl substituted phenyl, in particular di-tert.-butyl-phenyl, R.sup.3, R.sup.4 and R.sup.5 being individually selected from the group of hydrogen, C.sub.1-C.sub.4-alkyl, unsubstituted or C.sub.1-C.sub.4-alkyl and/or halogen, in particular chlorine or fluorine substituted C.sub.6-C.sub.10-aryl, in particular unsubstituted or C.sub.1-C.sub.4-alkyl substituted phenyl whereby preferably R.sup.3, R.sup.4 and R.sup.5 being individually selected from the group of hydrogen, C.sub.1-C.sub.4-alkyl, unsubstituted or C.sub.1-C.sub.4-alkyl and/or halogen, in particular chlorine or fluorine substituted C.sub.6-C.sub.10-aryl, in particular C.sub.1-C.sub.4-alkyl substituted phenyl, more preferably at least one of the radicals R.sup.3 to R.sup.5 shall mean C.sub.1-C.sub.4-alkyl, in particular methyl, i-propyl and phenyl and, L is an amidinate ligand of the formula (3)

##STR00002## wherein the amidine-containing ligand is covalently bonded to the metal M via the imine nitrogen atom, and Sub.sub.1 is an unsubstituted or C.sub.1-C.sub.4-alkyl and/or halogen, in particular chlorine or fluorine substituted C.sub.6-C.sub.10-aromatic substituent, in particular phenyl and Sub.sub.2 is a substituent comprising a heteroatom of group 15, through which Sub.sub.2 is bonded to the imine carbon atom or Sub.sub.1 and Sub.sub.2 together with the imino group they are connected to form a ligand of formula (3a)

##STR00003## wherein the amidine-containing ligand (3a) is covalently bonded to the metal M via the imine nitrogen atom N.sup.2, wherein the benzo ring fused to the amidine ring may be unsubstituted or contain further substituents R.sup.7, which are individually of the index “q” selected from the group of hydrogen, C.sub.1-C.sub.4-alkyl and halogen and whereby q is a number of 0 to 4, preferably 0 to 2, most preferably 0, Sub.sub.4

The present invention relates to a hybrid supported metallocene catalyst and a polyolefin preparation method using the same. Using the hybrid supported metallocene catalyst can not only significantly reduce the amount of wax produced when polymerizing olefin monomers, but can also enhance the stress cracking resistance of the polyolefin that is prepared.

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.

An olefin-based copolymer and method of making the same are disclosed herein. In some embodiments, the olefin-based copolymer includes a repeating unit derived from an alpha-olefin, wherein the alphas-olefin is present in the copolymer at 15 wt % to 45 wt %, wherein the copolymer has a density (d) of 0.85 to 0.89 g/cc, a melt index (MI), measured at 190° C. and 2.16 kg load, of 15 g/10 min to 100 g/10 min, and a hardness defined by Equation 1. The olefin-based copolymer has improved hardness and is highly flowable, and may show improved physical properties of tensile strength, elongation rate and flexural modulus.

The polyethylene according to the present disclosure reacts with chlorine to prepare a chlorinated polyethylene having excellent processability during extrusion with a high tensile strength by implementing a molecular structure having a high content of medium molecular weight, and may also prepare a CPE compound including the chlorinated polyethylene.

The polyethylene according to the present disclosure has a short relaxation time and a uniform particle size, thereby preparing a chlorinated polyethylene excellent in chlorination productivity and glass transition temperature by reacting with chlorine. And, a PVC composition with improved impact strength may also be prepared by including the same.

The present invention provides an ethylene/alpha-olefin copolymer satisfying the following conditions (a) to (d): (a) density: 0.850 to 0.910 g/cc, (b) melt index (MI, 190° C., 2.16 kg load conditions): 0.1 to 100 dg/min, (c) molecular weight distribution (MWD): 1.5 to 3.0, and (d) a R.sub.v value of 0.18 to 0.59.

The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition comprising the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density.

The polyethylene according to the present disclosure has a molecular structure having a narrow particle distribution and a low content of ultra-high molecular weight, so that a chlorinated polyethylene having excellent chlorination productivity and thermal stability may be prepared by reacting the polyethylene with chlorine. And, a PVC composition including the same with improved impact strength may also be prepared.