Patent ID: 6465574
Filing Date: 2002-10-15
Classification: C08L

Abstract:
A process for the manufacture of a moulded article, the process comprising:powder moulding a polymer composition having a Shore D hardness value less than 40 points according to method ASTM D 2240; said polymer composition comprising: 1) a polyolefin composition consisting of: i) 5 to less than 100% by weight of a crystalline or partially crystalline isotactic polymer of 1-butene; and ii) more than 0 to 95% by weight of a thermoplastic elastomeric polyolefin composition having a melt flow rate of 20-100 g/10 min (at 230Â° C. and 2.16 kg); or 2) a polyolefin composition consisting of: iii) 100 parts by weight of a crystalline or partially crystalline isotactic polymer of 1-butene or composition (1); and iv) more than 0 to 100 parts by weight of an elastomeric polymer; with the proviso that when the polymer of 1-butene is a homopolymer or a copolymer with less than 2% by weight of comonomer, the polyolefin compositions (1) and (2) contain at least 5 parts by weight of an elastomeric polymer.