Organotin polymers. XII. Azeotropy in binary and ternary copolymerization reactions of di(tri-n-butyltin) itaconate with acrylic acid esters, styrene, and acrylonitrile

✍ Scribed by A. F. Shaaban; A. A. Mahmoud; N. N. Messiha

• Publisher: John Wiley and Sons
• Year: 1988
• Tongue: English
• Weight: 514 KB
• Volume: 36
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1988.070360519

✦ Synopsis

Binary and ternary copolymerizations of di(tri-n-butyltin) itaconate (TBTI) with methyl acrylate (MA), ethyl acrylate (EA), n-butyl acrylate (BA), styrene (ST), and acrylonitrile (AN) 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. The determination of unitary, binary, and ternary azeotropies of the various systems studied was easily handled by a computer. Ternary azeotropic compositions for TBTI-MA-AN and TBTI-EA-AN systems were 37 : 48 : 15 and 9 : 80 : 11 mol %, respectively. Also, "Pseudo-azeotropic" regions were identified where the deviation between feed and polymer compositions is very small.