Patent ID: 9174879
Filing Date: 2015-11-03
Classification: C04B

Abstract:
1. A method for increasing a rate of extrusion of a ceramic precursor batch composition, comprising: preparing a ceramic precursor batch composition by providing inorganic ceramic-forming ingredients; and adding a combined hydroxypropyl methylcellulose binder and water to the inorganic ceramic forming ingredients, the combined hydroxypropyl methylcellulose binder having a molecular weight of less than about 300,000 and comprising at least one high molecular weight hydroxypropyl methylcellulose binder having a molecular weight of greater than about 300,000 g/mole and at least one low molecular weight hydroxypropyl methylcellulose binder having a molecular weight of less than about 300,000 g/mole, wherein the rate of extrusion is increased by: wherein MC is a weight % of the at combined hydroxypropyl methylcellulose binder based on a 100% of the inorganic ceramic-forming ingredients, and W is a weight % of the water based on the 100% of the inorganic ceramic-forming ingredients; optionally adding at least one of a pore-forming material, a lubricant, or a surfactant to the ceramic precursor batch composition; plasticizing the inorganic ceramic-forming ingredients, the combined hydroxypropyl methylcellulose binder and water to form the ceramic precursor batch composition; and extruding the ceramic precursor batch.