0 grams 0 032 mole were added and the steam condenser was started nitrogen sparging was increased to 4 liters per minute and the temperature controller was set at 160 u00b0 c this temperature was achieved 19 minutes later after two hours at the 160 u00b0 c reaction temperature the temperature controller was set at 205 u00b0 c this temperature was achieved 16 minutes later reaction continued for 2 75 hours at 205 u00b0 c after which time a total of 49 0 milliliters of water layer and 2 5 milliliters or organic material had been removed through the steam condenser and into the dean stark trap cold water condenser assembly the reactor was cooled to 165 u00b0 c and 100 ppm of hydroquinone was added as an inhibitor the polyester alkyd was recovered as a pale yellow solid with a final acid number of 29 7 the polyester alkyd 171 0 grams and styrene 129 0 grams were mixed to form a 43 0 styrenated solution the resulting solution was used to determine spi gel characteristics brookfield viscosity 25 u00b0 c and a clear unfilled casting was made for heat distortion temperature barcol hardness tensile and flexural strength and oxygen index testing oxygen index values were determined by astm d2863 76 a cure system of 1 0 benzoyl peroxide and 0 01 dimethylaniline was used to cure the casting at room temperature followed by post curing for 2 0 hours at 93 u00b0 c 200 u00b0 f the following results were obtained a portion of the polyester alkyd 253 0 grams of example 8 was dissolved in 1200 milliliters of methylene chloride then.