Glucoside derivatives of some UV absorbers have been prepared and investigated as photostabilizers for PVC in absence and in presence of Ca‐Zn stearate. The results indicate a reasonable stabilizing effect of the glucosides compared with the parent UV absorbers. The prepared glucosides were also investigated as thermal stabilizers for PVC and exhibited good thermal stability compared with that of commercial Ca‐Zn stearate heat stabilizer.

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A d a Polymeriu 34 (1983) Heft 4 235 polymers on one hand and untreated cotton and ceric-treated cotton on the other hand indicated that the copolymers are more resistant t o degradation than ceric-treated cotton but less resistant than untreated cotton. Furthermore, there is a tendency that the resistance of the copolymers to thermal degradation a t 180°C and 200 "C decreases by increasing the graft yo. The opposite holds true for thermal degradation a t 160 "C. 1121 HEBEISH, A., and MEHTA, P. C.: J. Appl. Polymer Sci. 12 (1968) 1625.