Acetylacetone → HCID 159868, compound

1,202 g (12.0 mol) of acetylacetone was added to a 3 liter kneader equipped with a thermometer, a dropping funnel, a condenser and a jacket, and then stirred. Then 444 g [6 mol, calcium hydroxide/acetylacetone=1/2.0 (molar ratio)] of calcium hydroxide was added dropwise to the kneader over 3 hours. The reaction temperature was between 32 and 65° C. After completion of the dropping, the mixture was stirred and mixed at a temperature of 65 to 68° C. for 4 hours until the reaction was complete. The resulting product was warmed under a flow of nitrogen gas. At 68° C., the product was subjected to the drying step, and dried at 68 to 73° C. for 24 hours until the product attained a moisture content of 6.8% by weight. The dried product was cooled to give 1,550 g of yellowish white calcium acetylacetonate [yield 99.1 mol % (calcium hydroxide basis), purity 91.5% by weight].

1. customkneader equipped with a thermometer, a dropping funnel, a condenser
2. customwas between 32 and 65° C
3. stirringAfter completion of the dropping, the mixture was stirred
4. additionmixed at a temperature of 65 to 68° C. for 4 hours until the reaction
5. temperatureThe resulting product was warmed under a flow of nitrogen gas
6. customAt 68° C.
7. customdried at 68 to 73° C. for 24 hours until the product
8. temperatureThe dried product was cooled

ORD record

ord-ad4d09ffddf04f9e9bf772a27dd0efbe

Source dataset

uspto-grants-2002_04

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06376719B1