Abstract: Polyethylene films having a good balance of optical and mechanical properties are disclosed. The films are derived from ethylene copolymer compositions made with a suitably substituted phosphinimine catalyst. The ethylene copolymers have very narrow molecular weight distributions and broadened comonomer distributions.

Abstract: Polyethylene films having a good balance of optical and mechanical properties are disclosed. The films are derived from ethylene copolymer compositions made with a suitably substituted phosphinimine catalyst. The ethylene copolymers have very narrow molecular weight distributions and broadened comonomer distributions.

Abstract: A polyolefin blend comprising: (a) from 30 to 80 weight % of a low molecular weight copolymer comprising from 85 to 100 weight % of ethylene and from 15 to 0 weight % of one or more C4-8 alpha olefins having a density from 0.953 to 0.965 g/cm3 and a melt flow rate (2.16 kg 190° C.) from 0.1 to 20.0 g/10 minutes; and (b) from 70 to 20 weight % of a high molecular weight copolymer comprising from 85 to 99.9 weight % of ethylene and from 15 to 0.1 weight % of one or more C4-8 alpha olefins having a density from 0.915 to 0.940 g/cm3 and a melt flow rate (21.6 kg 190° C.) from 0.05 to 5.0 g/10 minutes, said copolymer being prepared with a single site catalyst is useful in the preparation of pipe.

Abstract: The present invention provides a half panel having on its back ribs defining symmetrically complimentary closed wall open faced cells and ribs having spaces there between. The half panel may be placed in back to back relationship and rotated through a required degree of rotation so that the open faced closed wall cells and ribs having spaces there between interlock so the open faced closed wall cells have at least one diagonal cross member. This provides a rigid panel suitable for a number of applications including forms for pouring concrete.

Abstract: A composite comprising from about 20 to 40 weight % of fiber reinforcing having a nominal length of not less than 1.25 cm, from about 1 to 10 weight % of a polar polymer and from 79 to 50 weight % of a polyolefin prepared using a single site catalyst has improved physical properties over comparable compositions made using polyolefins made using Ziegler Natta catalysts. The composites are suitable in many applications including construction and particularly in making concrete forms.

Abstract: A polyolefin blend comprising: (a) from 30 to 80 weight % of a low molecular weight copolymer comprising from 85 to 100 weight % of ethylene and from 15 to 0 weight % of one or more C4-8 alpha olefins having a density from 0.953 to 0.965 g/cm3 and a melt flow rate (2.16 kg 190° C.) from 0.1 to 20.0 g/10 minutes; and (b) from 70 to 20 weight % of a high molecular weight copolymer comprising from 85 to 99.9 weight % of ethylene and from 15 to 0.1 weight % of one or more C4-8 alpha olefins having a density from 0.915 to 0.940 g/cm3 and a melt flow rate (21.6 kg 190° C.) from 0.05 to 5.0 g/10 minutes, said copolymer being prepared with a single site catalyst is useful in the preparation of pipe.

Abstract: A polyolefin blend comprising: (a) from 30 to 80 weight % of a low molecular weight copolymer comprising from 85 to 100 weight % of ethylene and from 15 to 0 weight % of one or more C4-8 alpha olefins having a density from 0.953 to 0.965 g/cm3 and a melt flow rate (2.16 kg 190° C.) from 0.1 to 20.0 g/10 minutes; and (b) from 70 to 20 weight % of a high molecular weight copolymer comprising from 85 to 99.9 weight % of ethylene and from 15 to 0.1 weight % of one or more C4-8 alpha olefins having a density from 0.915 to 0.940 g/cm3 and a melt flow rate (21.6 kg 190° C.) from 0.05 to 5.0 g/l 0 minutes, said copolymer being prepared with a single site catalyst is useful in the preparation of pipe.

Abstract: A polyolefin blend comprising: (a) from 30 to 80 weight % of a low molecular weight copolymer comprising from 85 to 100 weight % of ethylene and from 15 to 0 weight % of one or more C4-8 alpha olefins having a density from 0.953 to 0.965 g/cm3 and a melt flow rate (2.16 kg 190° C.) from 0.1 to 20.0 g/10 minutes; and (b) from 70 to 20 weight % of a high molecular weight copolymer comprising from 85 to 99.9 weight % of ethylene and from 15 to 0.1 weight % of one or more C4-8 alpha olefins having a density from 0.915 to 0.940 g/cm3 and a melt flow rate (21.6 kg 190° C.) from 0.05 to 5.0 g/l 0 minutes, said copolymer being prepared with a single site catalyst is useful in the preparation of pipe.

Abstract: A solution polymerization process in a series or parallel of two or more reactors at different temperatures is used to prepare a multimodal polyolefin resin of narrow molecular weight distribution. This resin is used to manufacture melt extruded pipe that has an improved performance at elevated temperatures and an improved hydrostatic design.

Abstract: A solution polymerization process in a series or parallel of two or more reactors at different temperatures is used to prepare a multimodal polyolefin resin of narrow molecular weight distribution. This resin is used to manufacture melt extruded pipe that has an improved performance at elevated temperatures and an improved hydrostatic design.

Abstract: A solution polymerization process in a series or parallel of two or more reactors at different temperatures is used to prepare a multimodal polyolefin resin of narrow molecular weight distribution. This resin is used to manufacture melt extruded pipe that has an improved performance at elevated temperatures and an improved hydrostatic design.

Abstract: Polyolefin pipes, and particularly gas pipe, in which the olefin polymer has been nucleated with from 1,500 to 10,000 ppm based on the weight of the polyolefin of a nucleating agent which is a dibenzylidene derivative of sorbitol or xylitol have an improved long term hydrostatic strength.