KENNETH LEE WISE
Pilots at York Ave, New York, NY
License number
New York A2461961
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
1520 York Ave APT 20A, New York, NY 10028
Professional information
Precipitated Calcium Carbonate Particles From Basic Calcium Carbonate
US Patent:
5643415, Jul 1, 1997
Filed:
Jun 8, 1995
Appl. No.:
8/487766
Inventors:
Kenneth J. Wise - New York NY
International Classification:
D21H 1767
US Classification:
1621812
Abstract:
Novel precipitated calcium carbonate particles of varying size and shape, are prepared by adding gaseous carbon dioxide to an aqueous slurry containing basic calcium carbonate under a selectively controlled reaction environment. In its preferred embodiment precipitated calcium carbonate particles having a prismatic shape and an average equivalent spheroidal diameter of between about 1. 5 and about 6. 5 microns; large irregularly shaped particles having an average equivalent spherical diameter of between about 15 and about 25 microns; and multi-faceted spheroidal particles having an average equivalent spherical diameter of between 5 and about 15 microns, are provided. The reaction environment includes temperatures of between 0. degree. C. and 60. degree. C. and a surface active polyphosphate additive present in amounts of from about 0. 1 and about 1.
Precipitated Calcium Carbonate Particles From Basic Calcium Carbonate
US Patent:
6312659, Nov 6, 2001
Filed:
Aug 28, 1997
Appl. No.:
8/919247
Inventors:
Kenneth J. Wise - New York NY
International Classification:
C01F 1118
US Classification:
423430
Abstract:
Novel precipitated calcium carbonate particles of varying size and shape, are prepared by adding gaseous carbon dioxide to an aqueous slurry containing basic calcium carbonate under a selectively controlled reaction environment. In its preferred embodiment precipitated calcium carbonate particles having a prismatic shape and an average equivalent spheroidal diameter of between about 1. 5 and about 6. 5 microns; large irregularly shaped particles having an average equivalent spherical diameter of between about 15 and about 25 microns; and multi-faceted spheroidal particles having an average equivalent spherical diameter of between 5 and about 15 microns, are provided. The reaction environment includes temperatures of between 0. degree. C. and 60. degree. C. and a surface active polyphosphate additive present in amounts of from about 0. 1 and about 1.
Spheroidal Aggregate Of Platy Synthetic Hydrotalcite
US Patent:
5364828, Nov 15, 1994
Filed:
Oct 21, 1992
Appl. No.:
7/964338
Inventors:
Sherman D. Cox - New York NY
Kenneth J. Wise - New York NY
Kenneth J. Wise - New York NY
Assignee:
Minerals Technologies - New York NY
International Classification:
B01J 2004, B01J 2100
US Classification:
502341
Abstract:
An aggregated synthetic hydrotalcite having a substantially spheroidal shape and an average diameter of up to about 60. mu. m is disclosed. The aggregates are composed of individual platy particles having plate diameters of from about 0. 05 to about 10. mu. m. The material has a low tapped density, a high pore volume and a high specific surface area.
A process for producing the product is also disclosed. Product particle size is determined by controlling process parameters including reaction temperature and pH, stirring speed of the reaction mixture, and reactant addition rates and concentrations, including aqueous solutions of soluble magnesium and aluminum salts, which are mixed in a molar ratio of from about 2. 5:1 to 4:1, and a basic solution containing excess carbonate and base to maintain the reaction mixture at a pH of from about 8. 5 to about 9. 5.