Patent ID: 8481670

Claim:
A composition comprising: a) a polyolefin or a mixture of polyolefins; b) an antioxidant selected from the group consisting of: c) at least one additive selected from the group consisting of: i) a phosphorus stabilizer selected from the group consisting of triphenyl phosphite, diphenyl alkyl phosphites, phenyl dialkyl phosphites, tris(nonylphenyl)phosphite, trilauryl phosphite, trioctadecyl phosphite, distearyl pentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl)phosphite, diisodecyl pentaerythritol diphosphite, bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite, bisisodecyloxy-pentaerythritol diphosphite, bis(2,4-di-tert-butyl-6-methylphenyl)pentaerythritol diphosphite, bis(2,4,6-tri-tert-butylphenyl)pentaerythritol diphosphite, tristearyl sorbitol triphosphite, tetrakis (2,4-di-tert-butylphenyl) 4,4′-biphenylene-diphosphonite, 6-isooctyloxy-2,4,8,10-tetra-tert-butyl-dibenzo[d,f][1,3,2]dioxaphosphepin, 6-fluoro-2,4,8,10-tetra-tert-butyl-12-methyl-dibenzo[d,g][1,3,2]dioxaphosphocin, bis(2,4-di-tert-butyl-6-methylphenyl)methyl phosphite, bis(2,4-di-tert-butyl-6-methylphenyl)ethyl phosphite, (2,4,6-tri-tert-butylphenyl) 2-butyl-2-ethyl-1,3-propanediol phosphate, bis(2,4-di-cumylphenyl)pentaerythritol diphosphite and a compound represented by the following structural formula: and iii) at least one co-stabilizer selected from the group consisting of an antioxidant, a hindered amine stabilizer, an ultraviolet absorber, a metal deactivator, a peroxide scavenger, a hydroxylamine, a nitrone, an amine-N-oxide, a benzafuranone, an indolinone, a polyhydric alcohol, a basic co-stabilizer, a nucleating agent, a clarifier, a filler, a dispersing agent, a plasticizer, a lubricant, an emulsifier, a pigment, a rheology additive, a catalyst, a flow-control agent, an optical brightener, a flame retardant, an antistatic agent, an antimicrobial and blowing agents.