Process for surface treating layered lattice silicates and resultant products
AssigneeE.C.C. America Inc.
InventorsJorge E. Salinas, Weyman H. Dunaway, Camilla A. Rice
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Abstract
A method for chlorinating the surface of a layered lattice silicate to produce a reactive chloride intermediate. The layered lattice silicate is reacted in substantially dry particulate form with a reactant system capable of forming bound chloride moieties at its surface, to form the said chloride thereof, the reaction being conducted at temperatures below that which would otherwise substantially alter the starting composition.
Claims14
A method for modifying the surface of a layered lattice silicate comprising:
- reacting said layered lattice silicate in substantially dry particulate form with a reactant system capable of forming bound chloride moieties at said silicate surface, to form the chloride thereof, said reactant system comprising a gas containing Cl.sub.2, said reaction being conducted at temperatures below about 300.degree. C.;
- and reacting the chloride product with a reactive organic compound comprising a functional group.
A method for modifying the surface of an aluminosilicate clay which comprises:
- reacting a kaolin group or smectite group clay in substantially dry particulate form with a gas comprising Cl.sub.2 to form bound chloride moieties at said surface, the reaction being conducted at temperatures below about 300.degree. C. for a time of about 5 seconds to about 15 minutes and substantially without decomposition of said clay;
- and reacting the chlorinated product so obtained with a reactive organic compound comprising an olefinic group.
A composition of matter for use as a filler in paper, rubber, resin and plastics which comprises:
- a particulate kaolin, the surface of which has been activated by forming bound chlorides at said surface, and the resultant surface-activated product reacted with an organic compound comprising an olefinic group.
Dependencies are inferred from the claim text.