Cl. 1: Catalysts for use in the manufacture of plastics, rubber, and olefin-based polymers olefin-based polymers, namely, polyethylene and polypropylene based polymers, and plastic molding compounds all for use in the manufacture of molded plastic articles, plastic sheets and films · Cl. 40: The treatment of chemical materials for production and optimization of catalyst systems
W. R. GRACE & CO.-CONN.
Especificação: Cl. 1: Catalysts for use in the manufacture of plastics, rubber, and olefin-based polymers olefin-based polymers, namely, polyethylene and polypropylene based polymers, and plastic molding compounds all for use in the manufacture of molded plastic articles, plastic sheets and films · Cl. 40: The treatment of chemical materials for production and optimization of catalyst systems
