Organic Material Containing Patents (Class 106/634)
  • Composition and method for hardening an aqueous alkali metal silicate solution
    Patent number: 4983218
    Abstract: Aqueous solutions of alkali metal silicate are hardened using blends of alkylene carbonates and aliphatic alcohols such as alkylene diols, polyalkylene glycols, or hydroxyalkyl ethers. The aliphatic alcohol decreases the set time from that obtained using alkylene carbonate alone. The hardened alkali metal silicate compositions are useful as binders in the preparation of foundry molds or in other applications requiring agglomeration of particulate matter.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: January 8, 1991
    Assignee: Arco Chemical Technology, Inc.
    Inventor: Rocco L. Mascioli
  • Polyol-alkali metal silicate emulsion
    Patent number: 4940844
    Abstract: A stable polyol-alkali metal silicate emulsion is produced by mixing and emulsifying an aqueous alkali metal solution, a polyol and an organic compound that will cause the aqueous alkali metal silicate solution to solidify. The polyol-alkali metal silicate emulsion may be used to react with compounds containing at least two isocyanate radicals to produce polyurethane silicate solid or foamed products which may be used for thermal and sound insulation, coating agents, adhesives, caulking agents and molded objects.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: July 10, 1990
    Inventor: David H. Blunt