Method for determining residues of polyamines in the epoxy resins

摘要

the subject invention is a spectrophotometric determination of amines polifunkcyjnych in epoxy resins. spectrophotometric determination of free amine to epoxy polymers used in indykator - alizarynu0119.solutions intended for measurement is prepared by mixing 1.5 ml solution created by extraction in methanol or acetone epoksydowego polymer with 1.5 ml of solution alizaryny concentration of approximately 5u202210 - 4 molu2022dm - 3. absorbance measurements can be conducted with wavelengths 527 nm and 430 nm. can also be used as the analytical signal (absorbance ratio.calibration curves are described equations is a straight line.