Dieter H Frank

US Patent:

47463686, May 24, 1988

Filed:

Feb 28, 1986

Appl. No.:

6/834941

Inventors:

Dieter Frank - Naperville IL
Lincoln D. Metcalfe - LaGrange IL
John Y. G. Park - Naperville IL

Assignee:

Akzo America Inc. - New York NY

International Classification:

C13P 312
C13J 102

US Classification:

127 55

Abstract:

The invention is a process for the removal of impurities comprising phenolics, dextrans or amino nitrogen from an aqueous saccharide solution. The solution is contacted with a sorbent, which itself is also an embodiment of the invention, comprising a cationic nitrogenous surfactant, the molecules of which contain at least one alkyl group of at least 8 carbon atoms, deposited on the surface of a microporous hydrophobic polymeric support. The deposition is accomplished by contacting a solution of the surfactant in an appropriate solvent with the support. The impurities are adsorbed onto the sorbent and the aqueous saccharide solution is removed from contact with the sorbent. The solvent must be completely miscible with the saccharide solution and the solution of the surfactant in the solvent must have a maximum sorbent wetting rate of at least 100 g/m. sup. 2. min. , and a sorbent bed retention of at least 140%, based on the bed interstitial volume. The partitioning coefficient of the impurities in the surfactant and solvent deposited on the support, as compared to in water, must be at least 20.

US Patent:

46297421, Dec 16, 1986

Filed:

Jan 27, 1986

Appl. No.:

6/823114

Inventors:

Catherine D. Brady - Downers Grove IL
Lincoln D. Metcalfe - Lagrange IL
Dale R. Slaboszewski - Joliet IL
Dieter Frank - Naperville IL

Assignee:

Akzo America Inc. - New York NY

International Classification:

C08J 936

US Classification:

521 55

Abstract:

A process for the hydrolysis of liquid fats comprising contacting the fats, in the presence of water at hydrolyzing conditions, with lipase immobilized by adsorption from aqueous solution without pretreatment or pretreatment with a polar solvent on a microporous structure comprising a synthetic hydrophobic thermoplastic polymer selected from the group consisting of aliphatic olefinic polymers, oxidation polymers, ionic polymers and blends thereof. Various embodiments of the invention include immobilized lipase itself and an embodiment that employs a vertical packed column of particles of the immobilized lipase through which the liquid fat and water feed streams may be passed cocurrent or countercurrent, one that employs a horizontally disposed diaphragm that includes a layer of fibers of the immobilized lipase and an embodiment that employs a stirred reactor wherein a suspension of particles of the immobilized lipase is maintained in the reaction medium. The process of the invention has exhibited surprisingly high activity in the hydrolysis of fats and the immobilized lipase possesses significant longevity.

US Patent:

45754349, Mar 11, 1986

Filed:

Sep 28, 1984

Appl. No.:

6/656083

Inventors:

Dieter Frank - Naperville IL
Lincoln D. Metcalfe - La Grange IL
John Y. G. Park - Naperville IL

Assignee:

Akzona Incorporated - Enka NC

International Classification:

C07C12008
C07C12116

US Classification:

558435

Abstract:

A process for the removal of impurities comprising amides from a solution comprising nitriles and the impurities. A reaction mixture is formed which includes the solution, a layered mineral comprising aluminum silicates having exchangeable alkaline or alkaline earth cations on the surfaces of the layers and an acid which has an acid strength sufficient to protonate the amides at amide protonation conditions, but in which the solubility of the salt of the acid and exchangeable cation at those conditions is such that the equilibrium of the protonation reaction is substantially in the direction of the amides remaining in a protonated form. The water content of the reaction mixture must be less than about 0. 5 wt. % for substantially all of the reaction time. The reaction mixture is maintained for a sufficient time at the amide protonation conditions for protonation of the amides and exchange of the protonated amides and exchangeable cations to occur, the protonated amides adhering to the surfaces of the layers.

US Patent:

48065200, Feb 21, 1989

Filed:

Mar 23, 1988

Appl. No.:

7/171988

Inventors:

Dieter Frank - Naperville IL
Lincoln D. Metcalfe - LaGrange IL
John Y. Park - Naperville IL

Assignee:

Akzo America Inc. - New York NY

International Classification:

B01J 2026

US Classification:

502402

Abstract:

The invention is a process for the removal of impurities comprising phenolics, dextrans or amino nitrogen from an aqueous saccharide solution. The solution is contacted with a sorbent, which itself is also an embodiment of the invention, comprising a cationic nitrogenous surfactant, the molecules of which contain at least one alkyl group of at least 8 carbon atoms, deposited on the surface of a microporous hydrophobic polymeric support. The deposition is accomplished by contacting a solution of the surfactant in an appropriate solvent with the support. The impurities are adsorbed onto the sorbent and the aqueous saccharide solution is removed from contact wiht the sorbent. The solvent must be completely miscible with the saccharide solution and the solution of the surfactant in the solvent must have a maximum sorbent wetting rate of at least 100 g/m. sup. 2. multidot. min. , and a sorbent bed retention of at least 140%, based on the bed interstitial volume. The partitioning coefficient of the impurities in the surfactant asnd solvent deposited on the support, as compared to in water, must be at least 20.

US Patent:

52522555, Oct 12, 1993

Filed:

Jun 11, 1990

Appl. No.:

7/521772

Inventors:

William J. E. Parr - Naperville IL
Dieter Frank - Naperville IL
Ronald E. Hutton - Faversham, GB2

Assignee:

Akzo America Inc. - Dobbs Ferry NY

International Classification:

H01B 100
H01B 102
H01B 120
H01B 122

US Classification:

252512

Abstract:

A conductive metal-filled substrate is formed by intermingling copper or nickel particles into the substrate, contacting the metal particles with a specified developing agent, and heating the metal particles and the developing agent. The filled substrates are electrically conductive and are useful for a variety of uses such as EMI shielding.

US Patent:

44668406, Aug 21, 1984

Filed:

Aug 2, 1982

Appl. No.:

6/404260

Inventors:

Dieter Frank - Naperville IL
Lincoln D. Metcalfe - La Grange IL

Assignee:

Akzona Incorporated - Asheville NC

International Classification:

C23F 1114

US Classification:

148 614R

Abstract:

A method for inhibiting corrosion of a metal surface is disclosed. The method comprises contacting said metal surface with a corrosion inhibitor of the formula ##STR1## wherein R is selected from the group consisting of aliphatic radicals containing from about 6 to about 22 carbon atoms, R. sub. 1 --C. sub. m H. sub. 2m --wherein R. sub. 1 is alkoxy containing from 6 to 22 carbon atoms and m is an integer of from 2 to 6, and ##STR2## wherein R. sub. 2 is alkyl containing from 1 to 20 carbon atoms, x is an integer of from 1 to 10 and each R. sub. 3 is independently hydrogen or methyl; and R' is selected from the group consisting of hydrogen, C. sub. 1 -C. sub. 12 alkyl, and C. sub. 1 -C. sub. 12 alkoxy, at a temperature and for a period of time sufficient to inhibit corrosion of said metal surface. A method for pretreating a metal surface to improve the adhesion of paint thereto is disclosed.

US Patent:

48657891, Sep 12, 1989

Filed:

Nov 14, 1983

Appl. No.:

6/551446

Inventors:

Anthony J. Castro - Chicago IL
Dieter Frank - Naperville IL
Cleve Madlock - Westmont IL

Assignee:

Akzo NV

International Classification:

B29C 6724

US Classification:

264122

Abstract:

A method for making a porous structure including forming a plurality of particles into a desired shape, the particles being in a size range from about 40 to about 400 microns and including from about 5 to about 100 percent by weight of microporous particles of a synthetic thermoplastic polymeric material and from about 0 to about 95 percent by weight of nonporous synthetic thermoplastic polymeric material; and subjecting the particles to an effective pressure from about 200 to about 8000 pounds per square inch, while retaining the particles in the desired shape, for a sufficient length of time to produce an integral porous structure having substantial physical integrity.

US Patent:

44290233, Jan 31, 1984

Filed:

Feb 5, 1982

Appl. No.:

6/346308

Inventors:

Dieter Frank - Naperville IL
Lincoln D. Metcalfe - Lagrange IL

Assignee:

Akzona Incorporated - Asheville NC

International Classification:

H01F 1002

US Classification:

428694

Abstract:

A method for complexing metal oxide particles in an organic medium is disclosed. The method comprises incorporating into said medium an effective amount of a complexing agent of the formula: ##STR1## wherein R. sub. 1 is selected from the group consisting of alkyl and alkenyl groups containing from 4 to 22 carbon atoms, aryl groups containing from 4 to 10 carbon atoms, alkyl and alkenyl groups containing from 4 to 22 carbon atoms substituted with one or more aryl groups containing from 4 to 10 carbon atoms and aryl groups containing from 4 to 10 carbon atoms substituted with one or more alkyl or alkenyl groups containing from 1 to 22 carbon atoms; R. sub. 2 is selected from the group consisting of hydrogen, --(CH. sub. 2 CH. sub. 2 O). sub. n H, wherein n is an integer from 1 to 10, alkyl and alkenyl groups containing from 1 to 22 carbon atoms, aryl groups containing from 4 to 10 carbon atoms, alkyl and alkenyl groups containing from 1 to 22 carbon atoms substituted with one or more aryl groups containing from 4 to 10 carbon atoms and aryl groups containing from 4 to 10 carbon atoms substituted with one or more alkyl or alkenyl groups containing from 1 to 22 carbon atoms; R. sub. 3 R. sub. 4 are independently selected from the group consisting of hydrogen, --CH. sub.