Patent ID: 9593608
Date: 2017-03-14
CPC Classifications: C04B,F01N,Y02T,Y10T

Claim:
1. A method for forming a ceramic honeycomb structure comprising: (i) coating said ceramic honeycomb structure with a polymer to create a polymeric barrier coating; wherein the polymer penetrates into or covers a plurality of pores in the ceramic honeycomb structure to form a thin barrier layer thereon; (ii) curing said polymeric barrier coating; (iii) applying a cement about a periphery of the ceramic honeycomb structure, including a plurality of peripheral cells having exposed interiors; (iv) burning off said polymeric barrier coating at or below a firing temperature of the cement, or at or below honeycomb operating temperatures during application if cold set cement is used (v) bonding the cement to the ceramic honeycomb structure to form a porous inorganic skin about the periphery of the ceramic honeycomb structure.