Patent ID: 8178646
Filing Date: 2012-05-15
Classification: C08G,C08J,H05K

Abstract:
1. A method for producing a liquid-crystalline polyester powder, the method comprising: (i) a step of carrying out melt polycondensation of monomers and/or acylated monomers to obtain a corresponding liquid-crystalline polyester having a flow initiation temperature of 240 to 300° C.; (ii) a step of spreading and solidifying the liquid-crystalline polyester so as to be a layer thereof with a thickness of 1 cm or more to obtain a solidified substance; (iii) a step of crushing the solidified substance to obtain a powder having a volume average particle diameter of 3 to 30 μm; and (iv) a step of subjecting the powder to a heat treatment to obtain a powder having a flow initiation temperature higher than the flow initiation temperature of the liquid-crystalline polyester after the melt polycondensation.