The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 1982
Filed:
Oct. 16, 1980
Applicant:
Inventors:
Assignee:
National Research Development Corporation, London, GB;
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C01B / ;
U.S. Cl.
CPC ...
423333 ; 1062 / ; 106292 ; 106299 ; 252454 ; 252457 ; 25217425 ; 423326 ; 423332 ;
Abstract
Sodium zinco/stanno/titano-silicate is synthesized by mixing a concentrated aqueous sodium zincate, stannate or titanate solution with a source of silica (e.g. powdered glass or sodium metasilicate solution) in the ratio 60 g sodium silicate to sodium zincate equivalent to 8.1 g zinc oxide, keeping the temperature at 40.degree. C. for 1/2 hour, diluting threefold with water of 20.degree. C., allowing a precipitate to form overnight, and filtering and drying the residue at 110.degree. C. The resulting sodium zincosilicate may be used in its own right as a water softener or may be converted by cation exchange into any other desired zincosilicate.