Beta crystalline modification of 2,2',2"-nitrilo[triethyl-tris-(

Details Beta crystalline modification of 2,2',2"-nitrilo[triethyl-tris-( Beta crystalline modification of 2,2',2"-nitrilo[triethyl-tris-(

1992-11-30

1994-07-05

Hoke, Veronica P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

558 78, 558147, C07F 96574, C08K 552

Patent

active

053268024

ABSTRACT:
The beta crystalline modification of 2,2',2"-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tertbutyl-1,1'-biphenyl-2,2 '-diyl) phosphite] is obtained by crystallizing said compound from the melt at elevated temperatures.
The beta crystalline form is an effective process stabilizer for polyolefins, particularly polypropylene.

REFERENCES:
patent: 4318845 (1982-03-01), Spivack et al.
patent: 4374219 (1983-02-01), Spivack et al.
patent: 4683326 (1987-07-01), Orban et al.
Pure & Appl. Chem. vol. 45, pp. 11-30 Pergamon Press 1976.

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