Abstract: A process for forming a stress-free thermosetting product which comprises: (a) mixing a high impact polymer compound, a liquid thermosetting monomer, a low temperature polymerizing catalyst and a high temperature polymerizing catalyst together; (b) pouring the thermosetting monomer, high impact polymer compound mixture, a low temperature polymerizing catalyst and high temperature polymerizing catalyst into a cavity of a mold which has a polymer coating or film on the interior surface thereof; (c) permitting the mixture in the mold with the low temperature and high temperature polymerizing catalysts to cure to a fully cured polymerized product; and (d) removing the polymerized product from the mold and stripping away the coating or film.

Abstract: This invention is directed to a novel method and apparatus for casting stress-free thermosetting resin materials. A process for forming a thermosetting product which comprises: (a) pouring a thermosetting polymer, with initiator, and catalyst, into a cavity of a mold which has a polymer coating or film on the interior surface thereof; (b) permitting the polymer to cure to a point where the cured material is reasonably dimensionally stable; (c) removing the partially cured polymeric material from the mold and placing the material in an oven; and (d) fully curing the polymeric material in the oven.

Abstract: A method to oxidize an oxidizable component in a liquid phase with an oxygen-containing gas is disclosed. The method comprises mixing the liquid phase and gas phase in a reactor with a rotating agitator element operated at constant power.

Abstract: A method for effecting the continuous, liquid phase oxidation of an alkyl aromatic with an oxygen-containing gas in the presence of an oxidation catalyst in stages in a single reactor is disclosed.