Abstract: A method is provided for reducing the color generated during production of copolycarbonate that includes quinone-type residues. The method includes the steps of mixing the precursors of monomer residues, a carbonate source and a polymerization catalyst into a reaction mixture. The method further includes the steps of introducing an antioxidant such as a hydroxycarboxylic acid to the reaction mixture in an amount sufficient to reduce color formation and introducing the reaction mixture to a series of process units wherein the reaction mixture polymerizes. The resulting copolycarbonate has improved color as compared to a copolycarbonate formed in a process without the step of introducing an antioxidant to the melt polymerization process.

Abstract: A snowboard binding is provided having a base to accommodate the boot of the user and keep it in a fixed position on the base; and a highback. The highback is adapted to allow the leg of a user to articulate through a range of motion. Attached to the highback is a system of springs or elastic members for returning the leg of the user to a neutral position relative to the board in the absence of an applied counterforce. For example, the highback can be attached to the base in such a manner as to allow the highback to articulate in a range extending from a forward position to a neutral position, and optionally to a rearward position, the neutral position being disposed between the forward position and any rearward position. In this binding, a tensioning member is affixed to the highback in such a manner as to resist articulation of the highback to the forward or the rearward position, and to apply a force to the highback to return it to the neutral position in the absence of an applied counterforce.