Crystalline modification of 1, 1', 1"- Nitril0 (tri-2-propyl-tri

Details Crystalline modification of 1, 1', 1"- Nitril0 (tri-2-propyl-tri Crystalline modification of 1, 1', 1"- Nitril0 (tri-2-propyl-tri

1995-05-03

1996-02-06

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, 558 87, 558 88, 252 466, C08K 5527, C07F 96574

Patent

active

054896355

ABSTRACT:
The new crystalline modification of 1,1',1"-nitrilo{tri-2-propyl-tris[2,2'-ethylidene-bis(4,6-di-tert-butylphe nyl)]phosphite} is obtained by crystallizing said compound from the melt at elevated temperatures.
This 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.
G. Gold et al., in J. Pharm. Sci., 55, 1291 (1966).

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