In this paper,Calixarenes 5,11,17,23 tetrasulfonic acid, tetrasodium salt was synthesized by the reaction of calixarenes and H 2SO 4. The yield of the Calixarenes 5,11,17,23 tetrasulfonic sodiums was improved to 20%～30% using the method that the reactant (filitrated H 2SO 4) was dissolved in a little amount of NaCl saturated solution and then the water was volatilized at room temperature.
Nine N,N diacyl adipic dihydrazides were synthesized. The compounds all exhibited remarkable inhibiting effects on the aging of polypropylene(PP) contacted with copper and their metal deactivation activity was increased with increase in their molecular weight. They didnt reduce the mechanical property of PP. The most effective were N,N dihexanoyl adipic dihydrazide and N,N dioctanoyl adipic dihydrazide. At 150 ℃ their aging periods for PP film were over 510 hours.
