Solvent-free process for the preparation of the beta...

Details Solvent-free process for the preparation of the beta... Solvent-free process for the preparation of the beta...

C - Chemistry, Metallurgy

07

F

C07F 9/6574 (2006.01)

Patent

CA 2170343

The beta crystalline form of 2,2' ,2"-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'- biphenyl-2,2'-diyl) phosphite] is obtained by the thermal treatment of the phosphite compound at 125°C in the absence of any solvent. The beta crystalline form is an effective process stabilizer for polyolefins, particularly polypropylene.

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