The piperazine anhydrous bottle has been on the bench for three months. It was resealed after each use. The visible appearance is unchanged white crystalline powder, no obvious clumping. The yield on this step has dropped from 82% to 71% across the last four batches, and nobody can explain it. The most likely explanation is […]
In polyolefin process development, 1-pentene is rarely the first alpha-olefin that comes to mind. 1-Butene, 1-hexene, and 1-octene dominate the commercial LLDPE comonomer conversation. But 1-pentene occupies an important position in catalyst research and specialty resin production and its behavior in Ziegler-Natta versus metallocene systems illustrates, more clearly than most other comonomers, why catalyst architecture […]
Corrosion protection strategies generally fall into two categories: barrier coatings that physically exclude the corrosive environment from the metal, and passivation — the formation of a chemically stable surface layer that slows or arrests the electrochemical corrosion reaction at the metal-solution interface. The most durable and process-controllable passivation treatments work by converting the metal surface […]
