Partially dehydrated vermiculite flakes and method of making sam

Details Partially dehydrated vermiculite flakes and method of making sam Partially dehydrated vermiculite flakes and method of making sam

1991-04-18

1993-10-19

Thibodeau, Paul J.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

252378R, 423326, 428323, 428324, 428327, 523138, 523179, B32B 516

Patent

active

052544109

ABSTRACT:
Intumescent vermiculite flakes useful in mountings of catalytic converters are prepared by partially dehydrating vermiculite ore to afford a uniform content of chemically bound water from about 1.0 to 3.2% by weight and a uniform bulk density from about 0.2 to 0.9 g/cm.sup.3. Such a mounting affords good support to the monolith at warm-up temperatures, exerts adequate holding forces at operating temperatures without danger of cracking the monolith, and does not incur gradual reduction in holding forces at operating temperatures. The mounting layer can be applied as either a mat or a paste.

REFERENCES:
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patent: 4447491 (1984-05-01), Bradbury et al.
patent: 4497869 (1985-02-01), Kamigaito et al.
patent: 4715987 (1987-12-01), Rittler
patent: 5079280 (1992-01-01), Yang et al.
patent: 5116537 (1992-05-01), Yang et al.
patent: 5151253 (1992-09-01), Merry et al.

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