Abstract: A process for brominating a styrenic polymer in an organic solvent in the presence of an antimony trihalide catalyst such that a reaction mass containing brominated styrenic polymer in an organic phase is formed is improved by mixing hydrochloric acid or hydrobromic acid, or both, with said reaction mass at least once to extract antimony catalyst residues from said reaction mass as an acidic aqueous phase. Preferably, catalyst residues are recovered from the acidic aqueous phase and still more preferably, recovered antimony trihalide catalyst residues are recycled to constitute at least a portion of the antimony trihalide catalyst used in preparing the brominated styrenic polymer.

Abstract: A process and system for creating and administering flexible, complex, error free electronic interviews or test of any kind. The process includes creating a library containing a plurality of self contained objects, i.e. question functional statements (QFUs). The QFUs are modules comprising a question statement, controls for answering the question statement, internal scoring controls, and controls for generating an unlimited variety of reactions or software responses to each answer. A plurality of categories is created to index QFUs wherein the category names are based on a tree structure relationship. These QFUs are used to build simple groups of QFU that are commonly found together, i.e. macro questions, as well as questionnaire templates. Questionnaire templates consists of multiple QFUs and categorical headings that are arranged in a two dimensional tree structure in a manner to logically represent the logical inter relationships between the different QFUs.

Abstract: Crude dihydrocarbylchlorothiophosphate product contaminated with dihydrocarbylpolysulfide and/or dihydrocarbylchlorophosphate is upgraded by treating the crude product with chlorine followed by an aqueous solution of reducing agent, separating an aqueous phase from the organic, then drying to obtain the resultant product.