Methods of making a catalytic converter or diesel particulate fi

Details Methods of making a catalytic converter or diesel particulate fi Methods of making a catalytic converter or diesel particulate fi

1995-06-30

1997-11-11

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

2642922, B29C 3106, B29C 4908, B29C 5500, B28B 1108

Patent

active

056860390

ABSTRACT:
The invention provides a method of making a catalytic converter for automotive exhaust gases comprising:
(a) placing a catalytic converter element in a mold;
(b) injecting a sufficient amount of a flowable mounting material into the mold to form a seamless continuous coating around a portion of the element, the flowable mounting material comprising 2 to 90 dry weight percent of at least one unexpanded intumescent material, 10 to 98 dry weight percent of binder, 0 to 25 dry weight percent fibers, 0 to 70 dry weight percent of one or more fillers, and a liquid; and
(c) removing the catalytic converter element from the mold. In a preferred embodiment the catalytic converter element is heated to a temperature from about 60.degree. C. to about 150.degree. C. after step (c) and then said catalytic element is disposed in a housing. Analogous methods of making diesel particulate filters and high temperature rigid filters are also described.

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