Low density microcellular carbon or catalytically impregnated ca

Details Low density microcellular carbon or catalytically impregnated ca Low density microcellular carbon or catalytically impregnated ca

1987-03-29

1989-02-21

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

264 291, 264 297, 423445, 423449, 502182, 502185, C01B 3102

Patent

active

048062901

ABSTRACT:
Machinable and structurally stable, low density microcellular carbon, and catalytically impregnated carbon, foams, and process for their preparation, are provided. Pulverized sodium chloride is classified to improve particle size uniformity, and the classified particles may be further mixed with a catalyst material. The particles are cold pressed into a compact having internal pores, and then sintered. The sintered compact is immersed and then submerged in a phenolic polymer solution to uniformly fill the pores of the compact with phenolic polymer. The compact is then heated to pyrolyze the phenolic polymer into carbon in the form of a foam. Then the sodium chloride of the compact is leached away with water, and the remaining product is freeze dried to provide the carbon, or catalytically impregnated carbon, foam.

REFERENCES:
patent: 3345440 (1967-10-01), Googin et al.
patent: 3810963 (1974-05-01), Benton et al.
patent: 4125676 (1978-11-01), Maricle et al.
patent: 4263268 (1981-04-01), Knox et al.
patent: 4276246 (1981-06-01), Bonzom et al.

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