반응 #1188

반응 방정식

ethyl acetate

ammonium hydroxide

→

vinyl acetate

vinyl alcohol

용매

water

반응 조건

후처리

1. 1
   workup.DISSOLUTIONthe polymer dissolved
2. 2
   기타to give a gel
3. 3
   기타During the next three weeks
4. 4
   기타at room temperature
5. 5
   온도At this time the solution was heated
6. 6
   기타to remove ammonia

실험 절차

To 100 g of the same copolymer was added 1500 ml of ethyl acetate, 40 ml of concentrated ammonium hydroxide and 40 ml of water. After two days with stirring, the polymer dissolved to give a gel. During the next three weeks at room temperature, a progressive decrease in viscosity of the solution was noted. At this time the solution was heated to remove ammonia, giving a partially saponified polymer of composition 32.4 wt % vinyl acetate, 16.4 wt % vinyl alcohol, 38 wt % TFE, and 13.2 wt % HFP in a 27.4 wt % solids solution in ethyl acetate.

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