David Michael Vincent

US Patent:

42161126, Aug 5, 1980

Filed:

Sep 21, 1977

Appl. No.:

5/835165

Inventors:

David N. Vincent - Glenview IL
Cheng H. Chang - Naperville IL

Assignee:

Champion International Corporation - Stamford CT

International Classification:

B01J 1302

US Classification:

252316

Abstract:

Pressure-sensitive microcapsules containing a solvent composition for use in carbonless copy systems for use in the absence of a halogenated solvent consisting essentially of a combination of a mono-alkyl naphthalene, wherein said alkyl group contains from 1 to 3 carbon atoms per molecule and a di-alkyl naphthalene, wherein each of said alkyl groups in said di-alkyl naphthalene contains from 2 to 4 carbon atoms per molecule, said mono-alkyl naphthalene being present in an amount between about 25 and about 40 percent by weight of the alkylated naphthalenes present in the solvent, and an isocyanate cross-linking agent.

US Patent:

40714691, Jan 31, 1978

Filed:

Aug 26, 1974

Appl. No.:

5/500903

Inventors:

David N. Vincent - Glenview IL
Cheng Hsiung Chang - Naperville IL

Assignee:

Champion International Corporation - Stamford CT

International Classification:

B01F 100

US Classification:

252364

Abstract:

A solvent composition for use in carbonless copy systems consisting essentially of a combination of a mono-alkyl naphthalene, wherein said alkyl group contains from 1 to 3 carbon atoms per molecule and a di-alkyl naphthalene, wherein each of said alkyl groups in said di-alkyl naphthalene contains from 2 to 4 carbon atoms per molecule. The solvent is used in the production of microcapsules wherein an isocyanate cross-linking agent is dissolved in the solvent.

US Patent:

40875814, May 2, 1978

Filed:

Aug 24, 1976

Appl. No.:

5/717449

Inventors:

David N. Vincent - Glenview IL
Ronald Golden - Mt. Prospect IL

Assignee:

Champion International Corporation - Stamford CT

International Classification:

B32B 516
B32B 100

US Classification:

428327

Abstract:

Microspheric opacifying agents are provided by admixing an aqueous, partially condensed, aldehyde condensation product with an oily material containing an emulsifying agent thereby forming a water-in-oil emulsion, admixing an amphiphilic acid catalyst with the emulsion and polymerizing the condensation product to form discrete, substantially spherical, opaque, solid particles. Additionally, the solid particles may be separated from the oily continuous phase and admixed with water for the further removal of oil material, and thereby causing the formation of spherical agglomerates or "super particles" having a substantially greater opacity than the aforesaid discrete particles. The super particles are hollow, substantially spherical particles having substantially spherical, discontinuous walls composed of agglomerated substantially spherical particles.

US Patent:

41383567, Feb 6, 1979

Filed:

Feb 19, 1976

Appl. No.:

5/659249

Inventors:

David N. Vincent - Glenview IL
Ronald Golden - Mt. Prospect IL

Assignee:

Champion International Corporation - Stamford CT

International Classification:

C09K 328
C08K 550
C08K 910

US Classification:

252182

Abstract:

Microcapsules having an average diameter below 5 microns and containing a flame retardant material are incorporated into polymeric materials, such as polyurethane foams without affecting the structural integrity of the cell walls of the foam. The capsules are chemically bonded to the foam, as well as physically incorporated therein by employing polyhydroxy polymer-containing capsule wall materials which react with the isocyanate used in the polyurethane.

US Patent:

41103432, Aug 29, 1978

Filed:

Feb 4, 1977

Appl. No.:

5/765693

Inventors:

David N. Vincent - Glenview IL
Cheng H. Chang - Chicago IL

Assignee:

Champion International Corporation - Stamford CT

International Classification:

C07D49322

US Classification:

260335

Abstract:

A substantially colorless bisfluoran chromogenic material having the structural formula ##STR1## wherein R. sup. 1 and R. sup. 2 each represent an alkyl group; X and Y each represent a hydrogen atom, a halogen atom, an hydroxyl group, an alkyl group, a nitro group, an amino group, an acyl group, or a carboalkoxy group; Z represents an oxy radical, a carbonyl group, an alkylene group, an alkylidene group, a sulfonyl group, or a thio radical; and n represents an integer from 0 to 1. The bisfluoran compounds are produced by reacting a 4-dialkylamino-2-hydroxy-2'-carboxybenzophenone with a diphenol wherein the diphenol is unsubstituted in at least one of the positions ortho to an hydroxyl group in each of the phenyl rings. The bisfluorans are used in pressure-sensitive copy systems comprising a support bearing microcapsules containing the bisfluorans, alone, or in combination with other color-forming materials.

US Patent:

42396468, Dec 16, 1980

Filed:

Sep 23, 1974

Appl. No.:

5/508322

Inventors:

David N. Vincent - Glenview IL
Ronald Golden - Mt. Prospect IL

Assignee:

Champion International Corporation - Stamford CT

International Classification:

B01J 1302
C08J 928

US Classification:

252316

Abstract:

Microspheric opacifying agents are provided by admixing an aqueous, partially condensed, aldehyde condensation product with an oily material containing an emulsifying agent thereby forming a water-in-oil emulsion, admixing an amphiphilic acid catalyst with the emulsion and polymerizing the condensation product to form discrete, substantially spherical, opaque, solid particles. Additionally, the solid particles may be separated from the oily continuous phase and admixed with water for the further removal of oily material, and thereby causing the formation of spherical agglomerates or "super particles" having a substantially greater opacity than the aforesaid discrete particles. The super particles are hollow, substantially spherical particles having substantially spherical, discontinuous walls composed of agglomerated substantially spherical particles.

US Patent:

39548031, May 4, 1976

Filed:

Jan 2, 1974

Appl. No.:

5/430142

Inventors:

David N. Vincent - Glenview IL
Cheng Hsiung Chang - Chicago IL

Assignee:

Champion International Corporation - Stamford CT

International Classification:

C07D31186

US Classification:

260335

Abstract:

A substantially colorless dilactone chromogenic material having the structural formula ##SPC1## And ##SPC2## Wherein R represents an alkyl group, an aryl group, an aralkyl group, an acyl group or an aroyl group; and X represents a hydrogen atom, a halogen atom, an alkyl group or a nitro group. The dilactone compounds are produced from precursor compounds that are formed by reacting pyromellitic dianhydride with a resorcinol having at least the fourth or the sixth position unsubstituted, in the presence of a dehydrating agent to form xanthyl derivatives of isophthalic and terephthalic acid. These precursors are then further reacted to form the dilactones. The dilactones are used in pressure-sensitive copy systems comprising a support bearing microcapsules containing the dilactones, alone, or in combination with other chromogenic materials.

US Patent:

40124193, Mar 15, 1977

Filed:

Jan 2, 1974

Appl. No.:

5/430141

Inventors:

David N. Vincent - Glenview IL
Cheng Hsiung Chang - Chicago IL

Assignee:

Champion International Corporation - Stamford CT

International Classification:

C07D51900

US Classification:

260335

Abstract:

A substantially colorless bisfluoran chromogenic material having the structural formula ##STR1## wherein R. sup. 1 and R. sup. 2 each represent an alkyl group; X and Y each represent a hydrogen atom, a halogen atom, an hydroxyl group, an alkyl group, a nitro group, an amino group, an acyl group, or a carboalkoxy group; Z represents an oxy radical, a carbonyl group, an alkylene group, an alkylidene group, a sulfonyl group, or a thio radical; and n represents an integer from 0 to 1. The bisfluoran compounds are produced by reacting a 4-dialkylamino-2-hydroxy-2'-carboxybenzophenone with a diphenol wherein the diphenol is unsubstituted in at least one of the positions ortho to an hydroxyl group in each of the phenyl rings. The bisfluorans are used in pressure-sensitive copy systems comprising a support bearing microcapsules containing the bisfluorans, alone, or in combination with other color-forming materials.