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Christopher John Brooke Dobbin, Alexei Kazakov: Half panel. Nova Chemicals, Kenneth H Johnson, November 27, 2008: US20080289274-A1

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 fac ...


22
Christopher John Brooke Dobbin, XiaoChuan Wang, Alexei Kazakov: Long fiber reinforced composites. NOVA Chemicals, Kenneth H Johnson, November 13, 2008: US20080281033-A1

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 ...


23
Stephen John Brown, John William Swabey, Christopher John Brooke Dobbin: Solution polymerization process. NOVA Chemicals, Kenneth H Johnson, January 2, 2003: US20030004288-A1

A solution polymerization process using a phosphinimine catalyst and a boron activator is conducted at a temperature of about 170° C. or greater in the presence of trialkyl aluminum to produce polyethylene having a comparatively broad molecular weight distribution. The polyethylene product produced ...


24
Mark Weber, Philippa Hocking, Stephen John Brown, Christopher John Brooke Dobbin: Rotomolding process with reduced cycle times. NOVA Chemicals, Kenneth H Johnson, Po Box 630708, January 27, 2005: US20050017409-A1

The cycle time for a rotomolding process is improved through the use of a molding material comprising a blend of at least two polyethylenes having narrow molecular weight distributions and homogeneous comonomer distributions. Alternatively, the molding temperature may be reduced to conserve energy a ...


25
Stephen John Brown, Christopher John Brooke Dobbin, Clayton Trevor Elston, Norman Dorien Joseph Aubee, Gilbert Alexander Arnould, Sarah Marshall, Lawrence Thomas Kale, Mark Weber: Heterogeneous/homogeneous copolymer. Nova Chemicals, Kenneth H Johnson, February 23, 2006: US20060041074-A1

Novel polyethylene copolymer compositions prepared with a homogeneous catalyst system are characterized by having a unique high molecular weight, low comonomer (high density) fraction. These heterogeneous/homogeneous compositions may be prepared using a solution polymerization process in which the p ...