CALCIUM ACRYLATE synthesis

Yield: 78%

Reaction Conditions:

with calcium oxide in toluene at 50; for 2 h;Dean-Stark;

Steps:

3 Calcium Diacrylate (CDA)
A 500 ml four-necked cylindrical shaped reactionflask equipped with a mechanical stirrer, a thermometer, adropping thnnel, and a Dean-Stark trap was charged withtoluene (177 grams) and calcium oxide (45 grams, 0.804moles), then slowly added with acrylic acid (118.69 grams,1.648 moles through the dropping thnnel while heated to50±5° C. and stirred at the temperature for 2 hours to obtaina mixture. The mixture was vacuum distilled to remove14.47 grams of water and recycle toluene, and then continued drying until no mass variation was noted to give 116.39grams (theoretical mass: 149.22 grams, yield: 78%) of whitepowders. The white powders remained unmelted at 250° C.Data of ‘H-NMR spectrum (400 MHz, CDC13+d5DMSO):ö6.18-6.01 (m), 5.69-5.69 (m). Data of FTIR spectrum:X3370 (bt), 1642, 1536, 1446, 1372, 1275, 1066, 986, 963,919, 837 cm’. The analyzed and calculated ash contentswere 29.87% and 30.78%, and [API] % by titration andcalculation were 68.24% and 79.1%.

References:

KUO CHING CHEMICAL CO., LTD.;CHIU, Kuan-Jung;CHENG, Wen-Wei;HUANG, Ting-Ti;TSOU, Chiu-Peng US2016/326196, 2016, A1 Location in patent:Paragraph 0122; 0123