The present invention relates to a process for the preparation of polyolefin-based graft copolymers comprising a first functionalized short chain branched polyolefin block and one or multiple polymer side chains. The functionalized short chain branched polyolefin is produced via the copolymerization of an olefin monomer and an olefin bearing a main group metal hydrocarbyl functionality. Subsequently the graft copolymers according to the invention can be produced for example by ring-opening polymerization of cyclic monomers or by transesterification of a preformed transesterifiable polymer, especially polyesters or polycarbonates. The invention moreover relates to polyolefin-based graft copolymers obtained by said process.

Disclosed are a near-infrared absorbing composition, an optical structure, and a camera module and an electronic device including the same. The near-infrared absorbing composition includes a copper complex represented by Chemical Formula 1.

##STR00001##

Definitions of Chemical Formula 1 are the same as described in the detailed description.

Disclosed are a near-infrared absorbing composition, an optical structure, and a camera module and an electronic device including the same. The near-infrared absorbing composition includes a copper complex represented by Chemical Formula 1.

##STR00001##

Definitions of Chemical Formula 1 are the same as described in the detailed description.

Disclosed are a near-infrared absorbing composition, an optical structure, and a camera module and an electronic device including the same. The near-infrared absorbing composition includes a copper complex represented by Chemical Formula 1.

##STR00001##

Definitions of Chemical Formula 1 are the same as described in the detailed description.

The present invention relates to a process for the preparation of polyolefin-based graft copolymers comprising a first long chain branched polyolefin block and one or multiple polymer side chains. The functionalized long chain branched polyolefin is produced via the copolymerization of an olefin monomer and an olefin bearing a main group metal hydrocarbyl functionality. The invention moreover relates to polyolefin obtained by said process ends. Subsequently the graft copolymers according to the invention can be produced for example by ring-opening polymerization of cyclic monomers or by transesterification of a preformed transesterifiable polymer, especially polyesters or polycarbonates. The invention moreover relates to polyolefin-based graft copolymers obtained by said process.

The present invention relates to a process for the preparation of polyolefin-based graft copolymers comprising a first long chain branched polyolefin block and one or multiple polymer side chains. The functionalized long chain branched polyolefin is produced via the copolymerization of an olefin monomer and an olefin bearing a main group metal hydrocarbyl functionality. The invention moreover relates to polyolefin obtained by said process ends. Subsequently the graft copolymers according to the invention can be produced for example by ring-opening polymerization of cyclic monomers or by transesterification of a preformed transesterifiable polymer, especially polyesters or polycarbonates. The invention moreover relates to polyolefin-based graft copolymers obtained by said process.

The present invention provides a catalyst composition including a functionalizing agent of the following Formula 1 together with a rare earth metal compound, an alkylating agent, and a halogen compound, having good catalytic activity and polymerization reactivity and useful for the preparation of a conjugated diene-based polymer having high linearity and excellent processability, and a conjugated diene-based polymer prepared using the catalyst composition.

(X.sub.1).sub.aN(X.sub.2).sub.3-a[Formula 1]

In Formula 1, a, X.sub.1, and X.sub.2 are the same as defined in the disclosure.

The present invention provides a catalyst composition including a functionalizing agent of the following Formula 1 together with a rare earth metal compound, an alkylating agent, and a halogen compound, having good catalytic activity and polymerization reactivity and useful for the preparation of a conjugated diene-based polymer having high linearity and excellent processability, and a conjugated diene-based polymer prepared using the catalyst composition.

(X.sub.1).sub.aN(X.sub.2).sub.3-a[Formula 1]

In Formula 1, a, X.sub.1, and X.sub.2 are the same as defined in the disclosure.

A polymeric radiation-source with customized geometries to maximize receipt of radiation into treatment areas that is formed from either radioisotopes molecularly bonded to a polymer or radioisotopes encased within a polymer.

A polymeric radiation-source with customized geometries to maximize receipt of radiation into treatment areas that is formed from either radioisotopes molecularly bonded to a polymer or radioisotopes encased within a polymer.