STABILIZATION OF PACREL(R) BY ORGANOTELLURIUM COMPOUND

The addition of 0.17-0.50% of bis[4-(dimethylamino)phenyl] telluride t o the thermoplastic elastomer PACREL(R) significantly improved tensile strength and elongation at break in unaged and oven-aged samples. Che miluminescence measurements showed that the organotellurium compound c onsiderably prolonged the induction period of thermooxidation of the m aterial and drastically reduced the total luminescence intensity of un aged and aged samples. These results indicate that the improved mechan ical properties of diaryl telluride stabilized PACREL(R) can be attrib uted to the antioxidative (peroxide decomposing, chain breaking) prope rties of the stabilizer. (C) 1998 John Wiley & Sons, Inc.