Phase equilibria of modified ethylene glycol–maleic anhydride–phtalic anhydride polyester resins

✍ Scribed by Jan Hyršl; Štěpán Podzimek; Josef Eichler

• Publisher: John Wiley and Sons
• Year: 1992
• Tongue: English
• Weight: 639 KB
• Volume: 44
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1992.070441121

✦ Synopsis

This paper describes the influence of a termination of ended carboxyl groups of ethylene glycol-maleic anhydride-phtalic anhydride polyesters with cyclohexanole on a position of phase interface of the unsaturated polyester-styrene system. At given temperatures, optimal molecular weights were determined for the achievement of maximal miscibility of this polymer with styrene. Simultaneously, a model implicit equation was proposed, which is based on the assumption that the dependence of the interaction parameter x on numberaverage molecular weights is similar to the dependence of the interaction parameter X on temperature. Solution of these implicit equations are isotherms in the phase diagram M,, -6'2 -Tcloude point.