Separation of prepolymers of phenol-formaldehyde resins by supercritical-fluid chromatography
✍ Scribed by Sadao Mori; Toshinori Saito; Makoto Takeuchi
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 649 KB
- Volume
- 478
- Category
- Article
- ISSN
- 1873-3778
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract A one‐ and two‐dimensional NMR study was performed on three commercial resol phenol—formaldehyde (PF) prepolymer resins. ^1^H, ^13^C, CSCM and DQF COSY NMR spectral data, in acetone‐__d__~6~, were obtained on each resin and on PF model compounds: phenol, five methylolphenols, four diphe
Direct analysis of polar solutes by supercritical fluid chromatography (SFC) has been somewhat limited because the mobile phases in common use are all relatively nonpolar. Derivatization is demonstrated as a viable means for facilitating the SFC separation of sugars. Oligo-and polysaccharides contai