Effect of stabilizers in the thermal treatment of PVC—V. Effect of Ba and Cd butyrates, 2-ethylhexoates, laurates and stearates on the dehydrochlorination of PVC

Modification and Characterization of Polyacrylic Acid for Metal Ion Recovery

“…This can be proved by the stabilizing efficiency of modified polyacrylic acids on the treated PVC reflected by reducing the extent of discoloration of induced by thermal treatment of PVC in comparison with blank PVC. This can be attributed to the dehydrohalogenation of PVC under thermal treatment conditions [16,18,19]. Figure 7 shows a lower extent of discoloration of the treated PVC samples relative to blank sample.…”

Principles of Stabilization

“…The possibility of reaction with double bonds, which have already been formed or were available in the PVC chain, was not clearly indicated in the literature in the case of metal carboxylates, in contrast to the action of organotins 52 and phosphites, 23 which are believed to take part in the following reactions:…”

On the Heat Stabilization Efficiency of Polyester Plasticizers for Poly(vinyl chloride) (PVC)

“…After good mechanical mixing of all components, sheets of thickness 1.0 mm were prepared by using a hot melt press (at T = 180 l 2 8C, pressure P = 8.0 tons and time t = 5.0 min). [8] In order to maintain a constant thickness, a frame of the desired thickness was used throughout all sheet preparations. The compositions and designations of the investigated PVC sheets are presented in Table 2.…”