Heat Exchanger Action Group

Phillips, C. H. and Edge, A. M. The reactor-heat exchanger (6th. Heat Exchanger Action Group (HEXAG) meeting, Leatherhead, UK, October 1996). 

The bromo substituent of 379 (n —0-3) was exchanged for an acetoxy group by the action of sodium acetate in acetic acid at 130- 140°C. The acetoxy group was then hydrolyzed to a hydroxy group with al-kaii.D5.i82. When the 3-bromotetrahydropyrrolo[2,l-i>]quinazolinones 379 (n = 0) were heated with aromatic amines at 70°C, the 3-aminotetrahy-dropyrrolo[2,l-i>]quinazolinones 384 were formed. ... 

Phenolic resins are also used as tanning materials, binders for sand molds, and vulcanization additives. Ion exchange resins are obtained by condensing phenols with sulfonic, carboxylic, or amino groups. Similarly, the surfaces of space capsules have a layer of phenolic resin, which becomes carbonized by the action of heat and thus gives good thermal protection. 

---