Using The Aisc Steel Building Case Study In A Structural Engineering Course Sequence
The present invention is directed to compositions containing novel beta-diketones of formula (I) and formula (II),R1COCH2COR2(I)R2COCH2COR2(II)which may be used to stabilize various polymers, such as polyvinyl chlorides (PVCs). The present invention is also directed to a method for preparing beta -diketones by a Claisen condensation reaction, which is represented as follows:R4COCHR5H+R6C(O)OR7+RO-->[R4COCR5COR6]-+R7OH+ROH.