Molded three-dimensional end cone insulator
Assignee3M Innovative Properties Company
InventorsCarl J. Braunreiter, Javier E. Gonzalez, Michael Patrick M. Mandanas
Life of this patent
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Abstract
A molded three-dimensional insulator that is suitable for use in an end cone region of a pollution control device and a method of making the insulator are described. The insulator includes ceramic fibers that have a bulk shrinkage no greater than 10 weight percent. The ceramic fibers can contain alumina and silica and can be microcrystalline, crystalline, or a combination thereof.
Claims20
A molded three-dimensional insulator having dimensions suitable for being disposed between inner and outer housings in a region of a pollution control device, said insulator comprising:
- (a) ceramic fibers having a bulk shrinkage no greater than 10 percent using the Thermal Mechanical Analyzer test, and (b) a binder, with no greater than 50 weight percent of an inorganic binder, based on the weight of the ceramic fibers, wherein said insulator is non-intumescent and has a one piece three-dimensional shape that is self-supporting so as to maintain said three-dimensional shape without collapsing when placed on a flat surface.
Dependencies are inferred from the claim text.