exhibited a t g of 149 1 u00b0 c as measured by dsc example 1 was repeated with the exception that sodium hydroxide was used as the catalyst 0 07 grams of sodium hydroxide were used to neutralize the acetic acid present in asm 0 1 grams of sodium hydroxide were used as transesterification catalyst which amounted to a catalyst level of 0 5 mole the transesterification reaction was carried out for a period of 4 hours under reflux in methanol while distilling off methyl acetate methanol and fresh methanol added to the reaction mixture as needed at the end of this period nmr analysis of the product indicated 70 percent of the acetoxy groups to hydroxy groups this example demonstrates that large excess of triethylamine is needed to change acetoxy groups to hydroxy groups example 1 was substantially repeated in example 11 with the exception that triethylamine was used as the catalyst instead of sodium methoxide 0 18 grams of triethylamine were used to neutralize the acetic acid in asm and 0 48 grams of triethylamine was used for the transesterification reaction which amounted to a catalyst level of 1 mole the reaction mixture was refluxed for 7 hours while removing continuously methanol methyl acetate as distillate the reaction.