Patent ID: 8894895
Filing Date: 2014-11-25
Classification: C11B

Abstract:
1. A method for preparing a ceramic body, comprising the steps of: providing a ceramic forming batch composition; providing a binder material, a liquid and a solid particulate pore former comprising a selected water dispersible wax/non-ionic surfactant material; mixing the batch composition with the binder material, the liquid and the pore former to form a plasticized extrudable paste; extruding the paste to form an extruded pre-ceramic green body; and drying the green body to form a dried pre-ceramic green body; and firing the dried pre-ceramic body to form a ceramic body: wherein the water dispersible wax/non-ionic surfactant material is a co-prilled material formed from: a wax is selected from the group consisting of natural paraffin waxes, beeswax, polyethylene glycol waxes, polypropylene glycol waxes and waxes made from a combination polyethylene glycol and polypropylene glycol, chemically modified waxes, substituted amide waxes, polymerized α-olefin waxes including combinations of α-olefins, and combinations thereof, and a non-ionic surfactant is selected from the group consisting of ethoxylated nonylphenols, ethoxylated octylphenols, PEO-PPO-copolymers, polyoxyethylene sorbitan monooleate, dodecylphenol ethoxylate, dinonylphenol ethoxylate, linear and branched alcohol ethoxylates, tallow amine ethoxylate and combinations thereof.