Process for preparing organoclays for aqueous and polar-organic systems
- Naperville, IL
A process for preparing organoclays as thixotropic agents to control the rheology of water-based paints and other aqueous and polar-organic systems. The process relates to treating low-grade clay ores to achieve highly purified organoclays and/or to incorporate surface modifying agents onto the clay by adsorption and/or to produce highly dispersed organoclays without excessive grinding or high shear dispersion. The process involves the treatment of impure, or run-of-mine, clay using an aqueous biphasic extraction system to produce a highly dispersed clay, free of mineral impurities and with modified surface properties brought about by adsorption of the water-soluble polymers used in generating the aqueous biphasic extraction system. This invention purifies the clay to greater than 95%.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- University of Chicago (Chicago, IL)
- Patent Number(s):
- US 6172121
- OSTI ID:
- 873486
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
preparing
organoclays
aqueous
polar-organic
systems
thixotropic
agents
control
rheology
water-based
paints
relates
treating
low-grade
clay
ores
achieve
highly
purified
incorporate
surface
modifying
adsorption
produce
dispersed
excessive
grinding
shear
dispersion
involves
treatment
impure
run-of-mine
biphasic
extraction
free
mineral
impurities
modified
properties
brought
water-soluble
polymers
generating
purifies
95
biphasic extraction
water-soluble polymers
aqueous biphasic
modified surface
process involves
surface properties
soluble polymer
process relates
highly dispersed
produce highly
water-soluble polymer
surface modifying
modifying agent
shear dispersion
water-based paint
soluble poly
polar-organic systems
preparing organoclays
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