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PVC has a significant tendency to degrade under γ irradiation. Therefore, considerable efforts have been made to improve its γ‐radiation stability. The purpose of this review is to summarize recent results in this area, with a special emphasis on the improvement of color stability of PVC‐based...
Novel zinc hydroxystannate‐ or zinc stannate‐coated hydrated fillers are shown to be highly effective flame‐retardant and smoke‐suppressant additives for chlorinated polymers. The performance of these systems is discussed, with reference to PVC, polychloroprene, halogenated polyester resin and...
A qualitative model that satisfactorily explains the rheological behavior of PVC plastisols during gelation and fusion is shown. Several industrial production cases have been analyzed, and the rheological characterization of the corresponding plastisols during gelation and fusion processes has...
A series of alkyltin thioglycolates was synthesized and their structure and equilibria with alkyltin chlorides studied by infrared analysis. Dynamic mechanical analysis was used to determine their compatibility with PVC. The implications of these results on PVC stabilization were discussed
Although lead stabilizers are less soluble and form less soluble reaction products than other types, because of the nature of the U.S. EPA Toxic Characteristic Leaching Procedure extraction, it is often difficult to certify lead‐stabilized scrap as nonhazardous waste. It has been found that lead...
Soft, low‐compression‐set and chemically resistant TPEs have been developed from advanced PVC blend technology. These blends have low‐temperature flexibility comparable to that of commonly used TPEs and can be made flame‐retardant. These new TPEs are suitable for applications in consumer...
The practical application of commercial polymer flame retardants can no longer meet present requirements in terms of effectiveness or hazard. The most effective flame retardants used thus far have been halogen‐, phosphorus‐, antimony‐, and heavy‐metal‐based compounds, which, however, have the...
The stabilization effect of alkyltin thioglycolates was determined by the measurement of discoloration of PVC formulations. The results were interpreted considering the structure of these compounds, their equilibration with alkyltin chlorides, and their postulated association with chlorine atoms...
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