US 10,472,291 B2 · Crosslinked starches for pore forming in ceramics

Abstract

Disclosed herein are green bodies comprising at least one ceramic-forming powder; at least one binder; and at least one cross-linked starch present in an amount of at least about 20% by weight as a super addition. Further disclosed herein is a method of making a porous ceramic body comprising mixing at least one ceramic-forming powder, at least one solvent such as water, at least one binder, and at least one cross-linked starch present in an amount of about 20% by weight as a super addition to form a batch composition; extruding the batch composition to form a green body; drying the green body; and firing the green body to form a porous ceramic body. Also disclosed herein are methods of screening a green body for making a porous ceramic body.

Claims8

Dependent claims

A method of making a porous aluminum titanate body, the method comprising:

mixing at least one aluminum titanate-forming powder, at least one solvent, at least one binder, and at least one cross-linked starch present in an amount greater than 30% by weight as a super addition to form a batch composition;
extruding the batch composition to form a green body;
drying the green body completely;
and
firing the green body to form a porous aluminum titanate body,
wherein the cross-linked starch is cross-linked to a degree sufficient to limit growth of the green body at about 35° C. and about 85% humidity to less than about 0.5% at least about 24 hours after complete drying and before the firing of the green body and to limit the shrinkage upon complete drying of the green body to less than about 4%.

3 more elements

Dependencies are inferred from the claim text.

Crosslinked starches for pore forming in ceramics

Life of this patent

Crosslinked starches for pore forming in ceramics

Life of this patent

Abstract

Claims8