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Title: Silane coated silicate minerals and method for preparing same

Abstract

Phyllosilicate minerals are described which exhibit in their structure, sequentially, octahedral layers containing magnesium, aluminum and/or iron oxides and tetrahedral layers of silica, are superficially etched with dilute acid to remove the outer octahedral layer under controlled conditions which preserve the basic structural integrity of the mineral substrate. The acid etch exposes silanol groups on the outer silicate layer of the mineral so that they become available to form silicon-to-oxygento-silicon-to-carbon bonds through condensation with organosilanes. The condensation of the organo-silane with the conditioned mineral surface is accomplished by mixing the acid etched silicate mineral with the organo-silane in a suitable solvent system under mild conditions. The organo-silane may be chosen from either of two classes: those which impart an oleophilic surface to the mineral; or those which enable the mineral surface to form additional chemical bonds with reactive sites within certain polymers and prepolymers. The mineral products of this invention which have been treated to possess oleophilic surfaces are superior additives for rheology control in lubricants, polyolefins, paints and oil well drilling fluids, as well as heat and moisture resistant reinforcing agents for rubbers; while those mineral products treated to possess surfaces chemically reactive with polymers and prepolymers when incorporatedmore » in such systems impart to the finished composites improved mechanical properties and heat and moisture resistance.« less

Inventors:
;
Publication Date:
OSTI Identifier:
6301403
Patent Number(s):
US 4260498
Assignee:
Dresser Industries Inc
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 20 Oct 1978
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; GREASES; ADDITIVES; ASBESTOS; CHEMICAL PREPARATION; SILANES; SILICATES; HYDRIDES; HYDROGEN COMPOUNDS; LUBRICANTS; OXYGEN COMPOUNDS; SILICON COMPOUNDS; SYNTHESIS; 023000* - Petroleum- Properties & Composition; 020500 - Petroleum- Products & By-Products

Citation Formats

Horn, J M, and Sample, T E. Silane coated silicate minerals and method for preparing same. United States: N. p., 1981. Web.
Horn, J M, & Sample, T E. Silane coated silicate minerals and method for preparing same. United States.
Horn, J M, and Sample, T E. Tue . "Silane coated silicate minerals and method for preparing same". United States.
@article{osti_6301403,
title = {Silane coated silicate minerals and method for preparing same},
author = {Horn, J M and Sample, T E},
abstractNote = {Phyllosilicate minerals are described which exhibit in their structure, sequentially, octahedral layers containing magnesium, aluminum and/or iron oxides and tetrahedral layers of silica, are superficially etched with dilute acid to remove the outer octahedral layer under controlled conditions which preserve the basic structural integrity of the mineral substrate. The acid etch exposes silanol groups on the outer silicate layer of the mineral so that they become available to form silicon-to-oxygento-silicon-to-carbon bonds through condensation with organosilanes. The condensation of the organo-silane with the conditioned mineral surface is accomplished by mixing the acid etched silicate mineral with the organo-silane in a suitable solvent system under mild conditions. The organo-silane may be chosen from either of two classes: those which impart an oleophilic surface to the mineral; or those which enable the mineral surface to form additional chemical bonds with reactive sites within certain polymers and prepolymers. The mineral products of this invention which have been treated to possess oleophilic surfaces are superior additives for rheology control in lubricants, polyolefins, paints and oil well drilling fluids, as well as heat and moisture resistant reinforcing agents for rubbers; while those mineral products treated to possess surfaces chemically reactive with polymers and prepolymers when incorporated in such systems impart to the finished composites improved mechanical properties and heat and moisture resistance.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {4}
}