Selected binders for the extrusion of ultra-thin wall cellular ceramics

Patent metadata

Field	Value
Publication number	US-9850170-B2
Application number	US-201514959112-A
Country	US
Kind code	B2
Filing date	Dec 4, 2015
Priority date	Apr 30, 2009
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

The disclosure provides for a mixture suitable for extrusion and firing to form a ceramic honeycomb substrate, said mixture comprising a batch composition selected from the group consisting of a cordierite batch composition and an aluminum titanate batch composition, an optional pore former material; a binder material and water; wherein said binder is a methyl ether of cellulose binder having a count of less than 300 water-insoluble fibers per gram of binder material.

First claim

We claim:

1. A mixture suitable for extrusion and firing to form a ceramic honeycomb article, said mixture comprising:
a batch composition selected from the group consisting of a cordierite batch composition and an aluminum titanate batch composition;
optionally, a pore former material;
a binder material; and
water;
wherein said binder is a water soluble alkyl ether of cellulose binder having a count of less than 300 water-insoluble fibers per gram of binder material.

2. The mixture according to claim 1 , wherein said alkyl ether of cellulose has a count of less than 200 water-insoluble fibers per gram of binder material.

3. The mixture according to claim 1 , wherein said alkyl ether of cellulose has a count of less than 65 water-insoluble fibers per gram of binder material.

4. The mixture according to claim 1 , wherein the alkyl ether of cellulose is selected from the group consisting of methyl cellulose, and methyl cellulose derivatives and ethyl cellulose derivatives that are water soluble, and combinations thereof.

5. The mixture according to claim 1 , wherein the alkyl ether of cellulose is selected from the group consisting of methyl cellulose, hydroxyethyl methyl cellulose, ethyl cellulose, hydroxyethyl methylcellulose, hydroxypropyl methyl cellulose, and combinations thereof.

Assignees

• Corning Inc

Inventors

• Hou Jun
• Lauderdale Susan Clair
• Pesansky Jonathan David

Classifications

• C04B2235/349

  Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite · CPC title

• C04B2235/3206

  Magnesium oxides or oxide-forming salts thereof · CPC title

• C04B2111/00129

  Extrudable mixtures · CPC title

• C04B38/0006

  Honeycomb structures (from one or more corrugated sheets by winding or stacking C04B38/0083) · CPC title

• C04B35/6365

  Cellulose or derivatives thereof · CPC title