Patent ID: 8183311

Claim:
A composition comprising a liquid phosphite, said liquid phosphite consisting of a mixture of at least two different phosphites of structure (I) wherein R 1 , R 2 , and R 3 are independently selected alkylated aryl groups selected from the group consisting of t-butylphenyl, di-t-butylphenyl, t-amylphenyl, di-t-amylphenyl and cresyl of structure (III), wherein R 4 , R 5 , and R 6 are independently selected from the group consisting of hydrogen, methyl, t-butyl and t-amyl; and R 7 is hydrogen or methyl; wherein one of R 4 , R 5 , R 6 , and R 7 is methyl and at least one of R 4 , R 5 , and R 6 , is t-butyl or t-amyl provided that at least one of the phosphites comprises an alkylated cresyl of structure (III), wherein the liquid phosphite consisting of a mixture of at least two different phosphites of structure (I) is a liquid at ambient conditions.