BLOW MOLDING COMPOSITION AND PROCESS

• Main Authors: LIGHTBODY, OWEN C, BOTROS, MATTHEW ZAKI, ARNOULD, GILBERT ALEXANDER, TIKUISIS, TONY, WALDIE, FRASER D. COLE, RAJKOVIC, ANNA
• Format: Patent
• Language: English; French
• Published: 07.05.2016
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

This invention provides a blow molding composition comprising a high molecular weight, chromium catalyzed ethylene copolymer (also referred to as a polyethylene resin) and a nucleating agent. The composition enables a more efficient blow molding process by reducing the number of malformed/rejected parts that are produced when the process is operated at high rates. In a preferred embodiment, the malformed parts may be reground and added to "virgin" composition for the production of prime parts.