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Alkali metal silicate composition with sodium carbonate additive

  • US 5,338,528 A
  • Filed: 06/14/1993
  • Issued: 08/16/1994
  • Est. Priority Date: 11/14/1990
  • Status: Expired due to Fees
First Claim
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1. Solid alkali metal silicate having a molar ratio SiO2 :

  • M2 O from about 1.5 to about 3, in which M is sodium, the silicate also containing from about 7 to about 20% by weight of sodium carbonate based on the dry material and the water content being from about 14 to about 22% by weight based on the total weight.

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