Patent ID: 8309635

Claim:
A phosphite composition, comprising: (a) tris(4-t-butylphenyl)phosphite or tris(4-t-amylphenyl) phosphite in an amount from 51 to 95 weight percent; and at least one of: (b) bis(4-t-butylphenyl)(2,4-di-t-butylphenyl) phosphite or bis(4-t-amylphenyl)(2,4-di-t-butylamylphenyl)phosphite; (c) bis(2,4-di-t-butylphenyl)(4-t-butylphenyl) phosphite or bis(2,4-di-t-amylphenyl)(4-t-butylamylphenyl)phosphite; or (d) tris(2,4-di-t-butylphenyl)phosphite or tris(2,4-di-t-amylphenyl)phosphite, wherein the composition comprises components (b), (c) and (d) in combination in an amount from 5 to 49 weight percent, based on the total weight of all phosphites in the composition, and wherein the composition is a solid at ambient conditions with a melting range greater than 25° C.