Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2005-05-24
2005-05-24
Szekely, Peter (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S094000, C524S110000, C524S393000, C524S399000, C524S434000, C524S569000, C524S330000, C252S397000, C252S400520, C252S404000, C252S405000, C252S406000, C252S407000
Reexamination Certificate
active
06897254
ABSTRACT:
Halogen-containing polymer compositions containing a heat stabilizer comprising a latent mercaptan, a zinc salt, and a free mercaptan as a separate entity are protected during processing by the degradation products of the latent (i.e., blocked) mercaptan. A free mercaptan is among those products. The separate free mercaptan (i.e., an alien free mercaptan) enhances the activity of the latent mercaptan in a synergistic manner.
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Adams Paul Brian
Norris Gene Kelly
Bodner Marcella M.
Chirgott Paul S.
Szekely Peter
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