glycerine carbonate hydrolysis may not be as steeply dependent on water concentration as is the case for ethylene carbonate thus the performance of saps modified using glycerine carbonate as esterification agent was found to be virtually independent of the amount of water used in the formulation in some cases the presence of catalyst was seen to provide a measurable enhancement of the sap 39 s absorbing properties relative to formulations that did not contain catalyst a homogeneous solution consisting of 1 50 grams glycerine 2 99 grams water and 0 50 grams zinc acetate was prepared and added to 50 00 grams of dry crosslinked poly acrylic acid courtesy industrial chemicals this starting polymer was prepared employing a trimethylolpropane triacrylate crosslinking agent approximately 70 of the acrylic acid moieties existed as the sodium salt giving the polymer a ph similar to that of human skin the resulting mixture was homogenized via mixing in a 300 cc household black and decker handyshortcut ii chopper for 30 45 seconds the homogenized mixture was then placed in a half pint wide mouth glass jar and subjected to a temperature of 145 u00b0 c for 2 5 hours with the lid removed the hot dry powder obtained was then removed from the oven sealed with lid and allowed to cool the cooled material was then broken into small granules again using the chopper to yield the finished product the above procedure was used to.