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polysulfide polymer

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polysulfide polymer
[pol′ēsul′fīd]
an elastomeric synthetic rubber used in dentistry as an impression material for fixed partial prosthodontic structures, inlays for single quadrants, and dental impressions. Also called polysulfide rubber.

polysulfide polymer (pol´ēsul´fīd pol´imur),
n a rubber base impression material that makes use of a mercaptan bondage. It is prepared by mixing a base material (mercaptan) with either an inorganic catalyst (lead peroxide) or an organic catalyst (benzoyl peroxide).


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Given that the caulking material is at least 30 years old, it may be degraded to the point that the PCBs, which were plasticizers in the original polysulfide polymer formulations, can be mobilized into solution.
Sulfur-donor systems or polysulfide polymers can be utilized (ref.
Gelation Reaction Polysulfide polymer is cured by converting mercaptan (-SN) groups to disulfide (-S-S-) bonds.
 
 
 
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