Peter L Foris

US Patent:

40898024, May 16, 1978

Filed:

Dec 30, 1976

Appl. No.:

5/755831

Inventors:

Peter L. Foris - Appleton WI
Robert W. Brown - Appleton WI
Paul S. Phillips - Appleton WI

Assignee:

NCR Corporation - Dayton OH

International Classification:

B01J 1302

US Classification:

252316

Abstract:

A process is disclosed for performing encapsulation, en masse, by an in situ polymerization reaction to yield capsule wall material. The polymerization includes a reaction between urea and formaldehyde or polycondensation of monomeric or low molecular weight polymers of dimethylol urea or methylated dimethylol urea in an aqueous vehicle and the reaction is conducted in the presence of negatively-charged, carboxyl-substituted, linear aliphatic hydrocarbon polyelectrolyte material dissolved in the vehicle. Liquid-liquid phase separation is accomplished and maintained by increase in the molecular weight of the resulting condensation polymer without further dilution of the manufacturing vehicle. The negatively-charged polyelectrolyte material is required and has an apparent effect of controlling or modifying the polymerization reaction. The disclosed encapsulation process permits manufacture of microcapsules in concentrations of capsule to capsule manufacturing vehicle higher than previously possible.

US Patent:

40011402, Jan 4, 1977

Filed:

Jul 10, 1974

Appl. No.:

5/487322

Inventors:

Peter L. Foris - Appleton WI
Robert W. Brown - Appleton WI
Paul S. Phillips - Appleton WI

Assignee:

NCR Corporation - Dayton OH

International Classification:

B01J 1302

US Classification:

252316

Abstract:

A process is disclosed for performing encapsulation, en masse, by an in situ polymerization reaction to yield capsule wall material. The polymerization includes a reaction between urea and formaldehyde in an aqueous vehicle and the reaction is conducted in the presence of negatively-charged, carboxyl-substituted, linear aliphatic hydrocarbon polyelectrolyte material dissolved in the vehicle. Liquid-liquid phase separation is accomplished and maintained by increase in the molecular weight of the urea/formaldehyde reaction product without further dilution of the manufacturing vehicle. The negatively-charged polyelectrolyte material is required and has an apparent effect of controllng or modifying the polymerization reaction. The disclosed encapsulation process permits manufacture of microcapsules in concentrations of capsule to capsule manufacturing vehicle higher than previously possible.

US Patent:

40873765, May 2, 1978

Filed:

Dec 30, 1976

Appl. No.:

5/755832

Inventors:

Peter L. Foris - Appleton WI
Robert W. Brown - Appleton WI
Paul S. Phillips - Appleton WI

Assignee:

NCR Corporation - Dayton OH

International Classification:

B01J 1302

US Classification:

252316

Abstract:

A process is disclosed for performing encapsulation, en masse, by an in situ polymerization reaction to yield capsule wall material. The polymerization includes a reaction between urea and formaldehyde or polycondensation of monomeric or low molecular weight polymers of dimethylol urea or methylated dimethylol urea in an aqueous vehicle and the reaction is conducted in the presence of negatively-charged, carboxyl-substituted, linear aliphatic hydrocarbon polyelectrolyte material dissolved in the vehicle. Liquid-liquid phase separation is accomplished and maintained by increase in the molecular weight of the resulting condensation polymer without further dilution of the manufacturing vehicle. The negatively-charged polyelectrolyte material is required and has an apparent effect of controlling or modifying the polymerization reaction. The disclosed encapsulation process permits manufacture of microcapsules in concentrations of capsule to capsule manufacturing vehicle higher than previously possible.

US Patent:

41001036, Jul 11, 1978

Filed:

Dec 30, 1976

Appl. No.:

5/755830

Inventors:

Peter L. Foris - Appleton WI
Robert W. Brown - Appleton WI
Paul S. Phillips - Appleton WI

Assignee:

NCR Corporation - Dayton OH

International Classification:

B01J 1302

US Classification:

252316

Abstract:

A process is disclosed for performing encapsulation, en masse, by an in situ polymerization reaction to yield capsule wall material. The polymerization comprises a reaction between melamine and formaldehyde and/or polycondensation of monomeric methylol melamine or etherified methylol melamine, or a low molecular weight polymer thereof, in an aqueous vehicle and the reaction is conducted in the presence of negatively-charged, carboxyl-substituted, linear aliphatic hydrocarbon polyelectrolyte material dissolved in the vehicle. Liquid-liquid phase separation is accomplished and maintained by increase in the molecular weight of the resulting condensation polymer without further dilution of the manufacturing vehicle. The negatively-charged polyelectrolyte material is required and has an apparent effect of controlling or modifying the polymerization reaction. The disclosed encapsulation process permits manufacture of micro-capsules in concentrations of capsule to capsule manufacturing vehicle higher than previously possible.

US Patent:

42305144, Oct 28, 1980

Filed:

Jul 26, 1978

Appl. No.:

5/928109

Inventors:

William J. Becker - Appleton WI
Kenneth D. Glanz - Appleton WI
Peter L. Foris - Appleton WI
Robert W. Brown - Appleton WI
Jerrold L. Anderson - Appleton WI

Assignee:

Appleton Papers Inc. - Appleton WI

International Classification:

C09J 500

US Classification:

156305

Abstract:

A process for separating a collated stack of carbonless copy paper sheets into form sets, which comprises pretreating the edge of the stack of sheets to be padded with a non-aqueous material, drying, applying an adhesive composition, drying and separating the unit sets.