Articles with improved optical properties

1. Moulded article comprising a polypropylene homopolymer, wherein the polypropylene homopolymer is polymerised in the presence of a Ziegler-Natta catalyst and wherein the polypropylene homopolymer:

a) comprises 0.40-0.90 wt % of ethylene and/or a C4-C10 α-olefin determined according to 13 C-NMR,

b) comprises at least one α-nucleating agent,

c) is free of phthalic acid esters as well as their respective decomposition products,

d) has a MFR230/2.16 determined according to ISO1133 in the range of 20-200 g/10 min, and

e) has a haze of ≤42% (ASTM 1003-D) when measured on 1 mm plaques,

wherein the Ziegler-Natta catalyst is self-supported by being free of any external support material and comprises:

a) compounds of a transition metal of Group 4 to 6 of IUPAC,

b) a Group 2 metal compound,

c) an internal donor, wherein said internal donor is a citraconate,

d) a co-catalyst, and

e) optionally, an external donor.

2. Moulded article according to claim 1 , wherein the at least one α-nucleating agent is either a polymeric nucleating agent and/or a soluble nucleating agent selected from sorbitol derivatives, nonitol derivatives, and benzene-trisamides.

3. Moulded article according to claim 1 , wherein the polypropylene homopolymer:

has a Heat Distortion Temperature (ISO 75B) of at least 90° C.

4. Moulded article according to claim 1 , wherein the polypropylene homopolymer:

has a haze of ≤35% when measured on 1 mm plaques.

5. Moulded article according to claim 1 , wherein the polypropylene homopolymer:

has top load of 360 N or more.

6. Moulded article according to claim 1 , wherein the moulded article is an injection moulded article.

7. Moulded article according to claim 1 , wherein the moulded article has a wall thickness of 2 mm or below.

8. Moulded article according to claim 1 , wherein the moulded article is a container.