These polymers include polyester polyols, copolyesters, polyacrylates, polysulfides
, polyolefins, polyamines, and polyurethanes.
The second half focuses on fine-tuning properties of polysulfides
intended for use as sealants, moving from modification strategies and filler influence to the practical applications and limitations of the materials.
After revisiting this fundamental work, Nazar and her colleagues looked at whether the production of polysulfides
could be stopped by a layer of carbon atoms.
Hydrogen sulfide and polysulfides
Hideo KIMURA as signaling molecules.
All these polysulfides
are doing their molecular dance and going all over the place.
SEMKIT packages are ready-to-use, disposable cartridges for storing, mixing and applying multiple-component adhesives, sealants, epoxies, polysulfides
, polyurethanes and other materials that require dynamic mixing.
But the reaction isn't direct; intermediate compounds called polysulfides
are more difficult to deal with, having an unpleasant smell and slow polymerization reaction.
Here we show an apparent correlation between the zonation of symbiont-containing species and the sulfur chemical speciation (sulfide, polysulfides
, thiosulfate) in the water bathing them.
Also available are cyanocrylate adhesives, anaerobic adhesives and sealants, films and preforms, poluurethane systems and polysulfides
Precision meter, mix, and dispense systems for plural and single components, for use with silicones, polysulfides
, polyurethanes, and epoxies.
are exterior high-performance sealants available in one- and two-part formulations with a life expectancy of 25 to 50 years.