6533b7d5fe1ef96bd1263be5

RESEARCH PRODUCT

Structurally Uniform Oligomers

subject

description

Model compounds as well as prototype reactions are frequently used to understand more complex chemical systems. In the case of phenolic resins a large number of model compounds have been synthesized. They are regarded as either components of a complex mixture of novolaks or resoles or as representative segments of the phenolic crosslinked network. These model compounds were formerly the basis for the correlation of physical properties to molecular structure. Presently the progress of analytical separations and identification methods is formidable; highly sophisticated chemical instrumentation allows the analysis of highly complex mixtures. Nevertheless, well defined compounds with definite structure are still required for the calibration of those analytical techniques, to test mechanistic schemes, to furnish basic data for computer simulation, etc.