Comparison of Different Calibration Methods for the Determination by FT-NIR Spectroscopy of the Hydroxyl Number in Polyester Resins

Quantitative determination of the distri

Quantitative determination of the distribution of free hydroxylic and carboxylic groups in unsaturated polyester and alkyd resins by 31P-NMR spectroscopy

✍ A. Spyros 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 150 KB

## Abstract Quantitative ^31^P‐NMR spectroscopy is used to measure the hydroxyl and carboxyl content of some polyester resins (short‐ and long‐oil alkyds, polyols, polyesters) through derivatization of the —OH protons with 2‐chloro‐4,4,5,5‐tetramethyldioxaphospholane I. This methodology is shown to