Improved Indexing of Chemical Abstracts Service Post-Treated Polymers

Chemical Abstracts Service (CAS) divides post-treated polymers into three types: structurable and registrable; namable but not structurable; and nonregistrable. The indexing of these, especially the second and third types, could be significantly improved. From a searcher's point of view, the records for these types are inconsistent, and many are also incomplete, i.e., they contain little or no structural data. Inevitably, this impairs the ease with which these types can be searched. Suggestions are offered for updating and improving this important area of polymer technology.