Binding Bisphenol A in a polycarbonate container

摘要

Embodiments of the disclosure provide a method for removing residual BPA from a residual BPA-containing substance and a method for making a container with residual BPA removed. The method may consist of preparing a stabilization reagent, wherein water is removed from the stabilization reagent. The method may also include preparing the residual BPA-containing substance. The method may also include reacting the residual BPA-containing substance in a melt condensation process with the stabilization reagent, wherein the stabilization reagent is non-toxic.

主权项

1. A method of removing residual BPA from a residual BPA-containing substance, consisting of:
preparing a stabilization reagent that reacts with BPA, the stabilization reagent is non-toxic and a compound of the general formula: AxDyAz where A is a carboxyl group or an ester, x is zero or an integer, D is a carbon chain, y is an integer of the value 3, 5, or 6-33, z is an integer; removing water from the stabilization reagent by a drying operation, the drying operation includes preheating the stabilization reagent, the preheating occurs at a temperature above 100 C and below the glass transition temperature of the residual BPA-containing substance; preparing the residual BPA-containing substance; and reacting the residual BPA-containing substance in a melt condensation process with the stabilization reagent.