Provided are a novel metallocene compound, a metallocene-supported catalyst, and a method of preparing a polyolefin using the same. The metallocene-supported catalyst according to the present disclosure exhibits a high polymerization activity even when the metallocene compound is supported on a support, thereby showing an excellent activity and preparing a polyolefin having a high molecular weight.

Olefin polymers are produced having a relatively high bulk density and a dramatically reduced amount of fines. The polymers are produced using a catalyst system containing a selectivity control agent. In one embodiment, the selectivity control agent is diisobutyldimethoxysilane.

Olefin polymers are produced having a relatively high bulk density and a dramatically reduced amount of fines. The polymers are produced using a catalyst system containing a selectivity control agent. In one embodiment, the selectivity control agent is diisobutyldimethoxysilane.

Propylene and butene random copolymers are disclosed that have excellent stiffness properties, low xylene soluble content, and excellent transparency characteristics especially when combined with one or more nucleating agents. The propylene-butene copolymers can be made with different melt flow characteristics making them well suited for use in injection molding, blow molding and thermoforming applications.

Propylene and butene random copolymers are disclosed that have excellent stiffness properties, low xylene soluble content, and excellent transparency characteristics especially when combined with one or more nucleating agents. The propylene-butene copolymers can be made with different melt flow characteristics making them well suited for use in injection molding, blow molding and thermoforming applications.

Phthalate-free polypropylene homopolymers and compositions incorporating the homopolymers are described. The phthalate-free polypropylene homopolymers exhibit high molecular weight as well as low XS content. Composition incorporating the phthalate-free polypropylene homopolymer can have relatively high stiffness properties. In addition, the polypropylene compositions can have good melt flow characteristics. Phthalate-free compositions including the homopolymers can be advantageously utilized in forming containers and other articles in food contacting, medical, and personal care applications.

Phthalate-free polypropylene homopolymers and compositions incorporating the homopolymers are described. The phthalate-free polypropylene homopolymers exhibit high molecular weight as well as low XS content. Composition incorporating the phthalate-free polypropylene homopolymer can have relatively high stiffness properties. In addition, the polypropylene compositions can have good melt flow characteristics. Phthalate-free compositions including the homopolymers can be advantageously utilized in forming containers and other articles in food contacting, medical, and personal care applications.

Propylene-ethylene copolymers are provided that exhibit superior tensile strength and mechanical properties due to their specific propylene and ethylene content, triad tacticity, viscosity, and crystallinity. Moreover, we have discovered that certain processing conditions, such as polymerization temperature and external donor to catalyst ratios, can facilitate the production of the high tensile strength propylene-ethylene copolymers described herein. Furthermore, the high tensile strength propylene-ethylene copolymers may be used to produce a variety of hot melt adhesives, such as those for hygiene applications, woodworking applications, lamination applications, and packaging applications, which exhibit unique and superior mechanical properties.

Propylene-ethylene copolymers are provided that exhibit superior tensile strength and mechanical properties due to their specific propylene and ethylene content, triad tacticity, viscosity, and crystallinity. Moreover, we have discovered that certain processing conditions, such as polymerization temperature and external donor to catalyst ratios, can facilitate the production of the high tensile strength propylene-ethylene copolymers described herein. Furthermore, the high tensile strength propylene-ethylene copolymers may be used to produce a variety of hot melt adhesives, such as those for hygiene applications, woodworking applications, lamination applications, and packaging applications, which exhibit unique and superior mechanical properties.

Provided are a novel metallocene compound, a metallocene-supported catalyst, and a method of preparing a polyolefin using the same. The metallocene-supported catalyst according to the present disclosure exhibits a high polymerization activity even when the metallocene compound is supported on a support, thereby showing an excellent activity and preparing a polyolefin having a high molecular weight.