Sol of ultra-fine particles of synthetic hectorite

Patent 3936383 Issued on February 3, 1976. Estimated Expiration Date:

February 3, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3666407

3671190

Inventors

Application

No. 467565 filed on 05/06/1974

US Classes:

428/421, Of fluorinated addition polymer from unsaturated monomers106/600, Alkali metal silicate containing423/326, Metal containing (i.e., silicate)423/331, Alkaline earth metal containing (Mg, Ca, Sr, or Ba)427/201, Plural particulate materials applied427/397.7, Inorganic silicon-containing coating428/446, Of silicon containing (not as silicon alloy)428/450, Next to metal428/469, Next to metal salt or oxide428/471, Alkali or alkaline earth metal oxide428/697, Layer contains compound(s) of plural metals516/34, The inorganic material primarily contains compounds containing both silicon and oxygen, or both aluminum and oxygen, or combinations thereof (e.g., silica (SiO2) organosol*, silica alcosol, talc, clay)516/80, The material is a silica particle having a distinct layer containing non-monovalent metal oxide (e.g., alumina coated silica sol)524/450Metal atom other than aluminum, e.g., zeolites, etc.

Examiners

Primary: Welsh, John D.

Attorney, Agent or Firm

Wenderoth, Lind & Ponack

Foreign Application Priority Data

1973-05-14 JA

Abstract

This invention relates to a sol of ultra-fine particles of synthetic hectorite prepared by swelling and cleaving Li-hectorite having a formula of Li1/3 Mg2-2/3 Li1/3 (Si4 O10)F2 or Na-hectorite having a formula of Na1/3 Mg2-2/3 Li1/3 (Si4 O10)F2 in water or an organic solvent.This invention further relates to a sol of the above hectorite in which Li or Na ions co-ordinated between lattice layers of the hectorite are ion-exchanged with non-hydratable cations.This invention still further relates to a product prepared by using the above sol.