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Novel amorphous silica, and products thereof

  • US 4,230,765 A
  • Filed: 06/29/1978
  • Issued: 10/28/1980
  • Est. Priority Date: 03/25/1975
  • Status: Expired due to Term
First Claim
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1. A shaped body of amorphous silica consisting essentially of primary particles of amorphous silica having a surface area of 250 to 600 M2 /g and an oil adsorption of 300 to 900 cc/g 100 randomly three-dimensionally interlocked with one another integrally into the body in the absence of binders and voids interspersed therebetween, each of the primary particles containing at least 98% by weight of SiO2 when dehydrated by ignition and chemically analyzed and having a crystalline appearance, at least two surfaces in symmetric relation, a length of about 1 to about 500μ

  • and a thickness of about 50 A to about 1μ

    , the length being at least about 10 times the thickness.

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