Sampling resin storage solution

Demonstrations of resin cleaning (e.g., by sampling resin storage solution)... 

Vagh Resin Solution - 86 30 8 B - U samples in 3-inch line to storage tank, 1440 hrs. 

Methacryloxyethyl Terminated Oligomer. A suspension of 8.0 g of Amberlyst 15 (38.6 mequiv of H ) in a solution of 8.703 g (46.24 mmol) of azelaic acid, 5.004 g (34.70 mmol) of 1,4-cyclohexanedimethanol and 30 ml. of toluene was reacted for 16 hours in a manner similar to the previous example. Then the suspension was cooled, 3.10 g (23.8 mmol) of 2-hydroxyethyl methacrylate was introduced with 0.15 g. of hydroquinone and a partial vacuum adjusted so diat the mixture would reflux at 50-60 C. After 9.3 hours the mixture was cooled to room temperature, diluted, the resin beads filtered and the solution was washed with water. Tht resulting solution showed a tendency to gel on storage at room temperature The polymer was therefore immediately separated from a sample by precipitation with excess methanol. 

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