Patent ID: 8309012
Filing Date: 2012-11-13
Classification: C04B

Abstract:
1. A method for producing ceramic honeycomb structures having a pore volume comprising the steps of mixing and blending ceramic material powder with a pore-forming material composed of microcapsules A to form a moldable material, extrusion-molding the moldable material to form a ceramic honeycomb article, and drying and sintering the resultant molded honeycomb article to form a honeycomb structure A, mixing and blending ceramic material powder with a pore-forming material composed of microcapsules B to form a second moldable material, extrusion-molding the second moldable material to form a second ceramic honeycomb article, and drying and sintering the resultant second molded honeycomb article to form a honeycomb structure B, wherein said pore-forming material consists essentially of foamed resin microcapsules constituted by a resin shell containing a gas, and wherein said microcapsules A are added to produce said honeycomb structure A in an amount M wherein said honeycomb structure B has the same pore volume as said honeycomb structure A, wherein said microcapsules A have a packed bulk density Q wherein