Crystalline form of tetrakis-(2,4-di-t-butylphenyl)-4,4'-bipheny

Details Crystalline form of tetrakis-(2,4-di-t-butylphenyl)-4,4'-bipheny Crystalline form of tetrakis-(2,4-di-t-butylphenyl)-4,4'-bipheny

1996-07-24

1998-12-22

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

558156, C08K 55393, C07F 948

Patent

active

058520848

ABSTRACT:
Tetrakis-(2,4-di-t-butylphenyl) -4,4'-biphenylene diphosphonite having the formula: ##STR1## in crystalline form, having a melting point of 185.degree. C.-186.degree. C. The above diphosphonite is useful as a stabilizer in organic polymers.

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