4-(ethenylsulfonyl)benzenamine

4-(Vinylsulfonyl)aniline (CAS 25781-90-2) is a bifunctional monomer combining a reactive vinyl sulfone group with a primary aromatic amine. These two distinct reactive sites make it a targeted building block for polymer synthesis.

It is frequently utilized in crosslinking systems where dual reactivity is required for complex chemical structures. In textile and fiber processing, it functions as a reactive crosslinker for various cellulosic substrates.

This enables durable chemical bonding between fiber and finishing agents during manufacturing. Polymer chemists incorporate it into specialty resin formulations where the amine group participates in curing reactions.

The vinyl sulfone group drives chain extension or network formation in these systems. In leather treatment and paper chemistry, it supports the development of crosslinked coatings that improve wet strength.

The compound also serves as a monomer in synthesizing functional polymers with pendant sulfonyl-aniline units. These are highly relevant to ion-exchange materials and specialty membrane research applications.

4-(Vinylsulfonyl)aniline is typically supplied as a solid powder for industrial use. It is available primarily at research and specialty chemical scale, with technical-grade material being the standard commercial offering.

Buyers sourcing for process development or small-batch production should confirm purity specifications. It is recommended to verify lot consistency directly with the supplier to ensure performance in sensitive applications.