Abstract: There are disclosed methods and compositions for accelerating the hardening of phenolic resole resins having a pH of about 4.5 to 9.5 with lightburned magnesium oxide or magnesium hydroxide, with or without the addition of an ester functional hardening agent. Acceleration of hardening is achieved by incorporating into said compositions an effective quantity of a material which: increases the solubility of magnesium in the hardenable mixture; by certain amines; or by certain chelating agents. Accelerator compounds include those which provide chloride, sulfamate, nitrate, formate, and phosphite anions as well as selected tertiary amines.

Abstract: The invention relates to the formation of silicon-containing coatings from the vapor phase thermal decomposition of halosilanes, polyhalodisilanes, polyhalosilanes or mixtures thereof in the presence of a metal catalyst. The instant invention also relates to the formation of silicon- and carbon-containing coatings and silicon- and titanium-containing coatings from the vapor phase thermal decomposition of alkyl halides and titanium halides, respectively, in the presence of a halosilane, polyhalosilane or halodisilane, and a metal catalyst.