OK
The Universal Selection Source:
Adhesives Ingredients
Article

Polysulfide Adhesives and Sealants

SpecialChem / Jun 11, 2003

Polysulfide polymers, first marketed in 1929, are mature products that are used in specialty adhesive and sealant applications. These important materials seem to not receive much attention today due to their restricted use, especially as adhesives, and to their competitive market displacement as sealants by silicones and urethanes. However, polysulfide polymers provide unique curing and performance properties that are attractive in many applications. The original polysulfide polymers were solid rubbery materials containing 37-82 percent bound sulfur. However, today the predominant product is the mercaptan-terminated liquid polymer (LP) that contains approximately 37 percent bound sulfur (see Figure 1). It is the high concentration of sulfur linkages that provide these products with their unique chemical properties. The liquid polysulfide polymer can be transformed in-situ from a liquid state into a solid elastomer, even at low temperatures.Polysulfide adhesives and sealants have been successful in applications requiring good moisture, solvent.

Be the first to comment on "Polysulfide Adhesives and Sealants"

Leave a comment





Your email address and name will not be published submitting a comment or rating implies your acceptance to SpecialChem Terms & Conditions
FEICA 2018 European Adhesive and Sealant Conference and EXPO
Channel Alerts

Receive weekly digests on hot topics

Back to Top