Patent ID: 7235191

Claim:
A polypropylene composition containing the components a) a crystallizable polypropylene homopolymer, random copolymer, alternating or segmented copolymer, block copolymer or a blend of polypropylene with another synthetic polymer, and b) 0.001 to 5%, relative to the weight of component a), of a compound of the formula (I) wherein R 1 , R 2 and R 3 , independently of one another, are C 1 –C 20 alkyl, C 1 –C 20 alkyl substituted by C 1 –C 20 alkylamino, di(C 1 –C 20 alkyl)amino, C 1 –C 20 alkyloxy or hydroxy; {poly(C 2 –C 4 alkoxy)}-(C 2 –C 4 alkyl), C 2 –C 20 alkenyl, C 3 –C 12 cycloalkyl, C 3 –C 12 cycloalkyl substituted by 1, 2 or 3 C 1 –C 20 alkyl; cyclohexylmethyl; cyclohexylmethyl substituted by 1, 2 or 3 C 1 –C 20 alkyl; C 3 –C 12 cycloalkenyl, C 3 –C 12 cycloalkenyl substituted by 1, 2 or 3 C 1 –C 20 alkyl; phenyl, phenyl substituted by 1, 2 or 3 radicals selected from the group consisting of C 1 –C 20 alkyl, C 1 –C 20 alkyloxy, hydroxy, halogen, trihalogenmethyl, trihalogenmethoxy, benzoyl, phenylamino, acylamino and phenylazo; phenyl substituted by 5 halogen, C 7 –C 9 phenylalkyl, C 7 –C 9 phenylalkyl which is substituted on the phenyl by 1, 2 or 3 radicals selected from the group consisting of C 1 –C 20 alkyl, C 1 –C 20 alkoxy and hydroxy; naphthyl, naphthyl substituted by C 1 –C 20 alkyl; adamantyl, adamantyl substituted by C 1 –C 20 alkyl; or a 5 to 6 membered heterocyclic group; characterized in that the polypropylene composition has a haze value which is smaller than 62%; the haze value being measured at a plate of 1.1–1.2 mm thickness.