Vinly ethyl vinyl ether

Polymerization behaviour of ethyl vinyl ether and isobutyl vinyl ether on H-mordenite and H-faujasite (H-Y) reveals certain distinctive features in comparison with that of n-butyl vin>d ether on these catalysts. 

Isotiierms for water uptake by pure H-moidenite and H-mordenite-polymer-conqiosites with 20.7 and 9.7 wt.% of x>ly ethyl vin>d ether and pWater uptake in the pol3mm is expected to be small and so the uptake of water within the mordenite crystals is little affected by the polymer. This implies that the amount of pol3mner formed and retained within the mordenite crystals must be small, especially for poly isobutyl vinyl ether. 

With H-Y faujasite, the water uptake behaviour presents very distincitive features. Sorption isotherms are shown in Fig. 8b for H-Y and H-Y-p(%nier com- )oates in which wt.% are respectively 24.3,29.3 and 27.6 with respect to oulgassed zeolite for pdy ethyl vin>4 ether, poly isobutjd vinyl ether and poly n-butyl vinyl ether. Compariscai of greatly reduced water uptakes with that in pure H-Y reveals that about 62,64 and 69% of the intracr3rstalline pore volume of H-Y is inaccessible to water for the three con c tes in the order given above. 

VIN AMAR (109-92-2) see vinyl ethyl ether. VINESTHENE or VINESTHESIN or VINETHEN or VINETHENE or VINETHER (109-93-3) see divinyl ether. VINEGAR ACID (64-19-7) see acetic acid. VINEGAR NAPHTHA (141-78-6) see ethyl acetate. 

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