Organotin polymers. XV. Azeotropy in terpolymerization reactions of tributyltin acrylate or methacrylate with itaconic acid or dimethylitaconate and acrylonitrile
✍ Scribed by A. A. Mahmoud; A. F. Shaaban; M. M. Azab; N. N. Messiha
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 405 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
✦ Synopsis
Ternary copolymerization of tri-n-butyltin acrylate (TBTA) or methylacrylate (TBTMA) with itaconic acid (IA) or dimethyl itaconate (DMI) and acrylonitrile ( A N ) were carried out in solution at 70°C in the presence of a free radical initiator. Experimental terpolymerization data agreed well with calculations based on the Alfrey-Goldfinger equation. Ternary azeotropic compositions for TBTA-IA-AN, TBTMA-IA-AN, and TBTMA-DMI-ANsystems were 39.0 : 26.1 : 34.9,51.7 : 10.5 : 37.8, and00.3 : 66.3 : 33.4 mol %, respectively. Also, "pseudo-azeotropic" regions were identified where the deviation between feed and polymer compositions is very small.