Patent ID: 6110411
Filing Date: 2000-08-29
Classification: B29C,B33Y,C08K,C08L

Abstract:
A method of forming an article comprising laser sintering a laser sinterable thermoplastic powder comprising a mixture of a powdered flow agent and at least one powdered block co-polymer thermoplastic resin having a Tg of not more than 50.degree. C., said block co-polymer consisting of a multiplicity of recurring intra-linear molecular units characterized as soft and hard segments, these segments joined head-to-tail to form the block co-polymer wherein the soft segment is selected from the group consisting of ether and ester molecular units and wherein the weight ratio of hard to soft segments in the block co-polymer is from 0.7 to 20 and wherein the powdered resin has a particle size of from about 1 to about 200 microns.