The data shown in table 4 indicate that the adjusted A-400G silica formula produced a compound with comparable compound density and crosslink density (i.e., elongation) to the current conventional HDS (Hi-Sil HDP-320G silica)/in-situ silane addition compound produced in this 16 liter pilot plant intensive mixer study.
An adjusted model passenger tread compound containing A-400G silica using 8% more filler, 43% more sulfur, 88% more CBS and 75% less toxic DPG produced a cure profile that was equal to or better than the cure profile associated with a typical current conventional HDS/in-situ silane addition compound. This adjusted formula produced a compound with comparable compound density as well as crosslink density while showing significant improvements in scorch safety, viscosity, reinforcement and dynamic properties.
Substances described on the basis of their components, such as alloys, polymers, mixtures, addition compounds
and salts make up about 13 percent of the file.