Francis X Gallagher

US Patent:

57103151, Jan 20, 1998

Filed:

Jun 24, 1996

Appl. No.:

8/668760

Inventors:

Francis Glenn Gallagher - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C07C 6748

US Classification:

560 78

Abstract:

An improved process for recovering depolymerization products from polymers such as polyesters, polyamides, and polyesteramides, especially when the starting polymer content is less than about 98%. The depolymerization and vapor phase recovery of monomers and other reaction products are conducted in the presence of a solid support.

US Patent:

55324045, Jul 2, 1996

Filed:

May 27, 1994

Appl. No.:

8/250391

Inventors:

Francis G. Gallagher - Wilmington DE

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

C07C 6748

US Classification:

560 78

Abstract:

An improved process for recovering reaction products from polymers such as polyesters or polyamides, especially those having a desired polymer level below about 98%. The process involves depolymerization and vapor phase extraction of monomers in the presence of a solid support.

US Patent:

51713080, Dec 15, 1992

Filed:

Feb 13, 1992

Appl. No.:

7/834794

Inventors:

Francis G. Gallagher - Wilmington DE
Cathy J. Hamilton - Wilmington DE
Steven M. Hansen - Kinston NC
Hyunkook Shin - Wilmington DE
Raymond F. Tietz - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

A61F 1346
C08G 6320
C08G 6360
C08G 63672

US Classification:

604372

Abstract:

The invention provides novel polyesters, fibers and films, nonwovens from the fibers and disposable products of the polyesters such as diapers. The products are degradable under the conditions typically existing in waste composting processes, have low ingredient costs and yet provide strength and toughness properties adequate for end uses such as in disposable diapers. The polyesters are based upon polyethylene terephthalate copolymerized with a non-aromatic diacid, such as adipic and glutaric acids, and containing alkali metal or alkaline earth metal sulfo groups, such as a metal 5-sulfoisophthalic acid derivative.

US Patent:

52196461, Jun 15, 1993

Filed:

Feb 13, 1992

Appl. No.:

7/834791

Inventors:

Francis G. Gallagher - Wilmington DE
Hyunkook Shin - Wilmington DE
Raymond F. Tietz - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

B32B 2734
B32B 2736
C08F 2000

US Classification:

428287

Abstract:

The invention provides novel blends of starch with polyesters, and shaped articles of such blends, including fibers, foams and films, nonwovens from the fibers and disposable products such as diapers. The products are degradable under the conditions typically existing in waste composting processes, have low ingredient costs and yet provide strength and toughness properties adequate for end uses such as in disposable diapers. The polyesters are based upon polyethylene terephthalate copolymerized with other ingredients, including non-aromatic diacids, such as adipic and glutaric acids, polyethylene ether groups, such as diethylene glycol or higher polyalkylene glycols, and hydroxy acids.

US Patent:

50970046, Mar 17, 1992

Filed:

Jan 25, 1991

Appl. No.:

7/645849

Inventors:

Francis G. Gallagher - Wilmington DE
Cathy J. Hamilton - Wilmington DE
Raymond F. Tietz - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C08G 6320

US Classification:

528272

Abstract:

The invention provides a novel polyesters, fibers and films, nonwovens from the fibers and disposable products of the polyesters such as diapers. The products are degradable under the conditions typically existing in waste composting processes, have low ingredient costs and yet provide strength and toughness properties adequate for end uses such as in disposable diapers. The polyesters are based upon polyethylene terephthalate copolymerized with a polyethylene glycol and a 5-sulfoisophthalic acid and, if desired, a polyethylene ether such as diethylene glycol.

US Patent:

51713098, Dec 15, 1992

Filed:

Feb 13, 1992

Appl. No.:

7/834792

Inventors:

Francis G. Gallagher - Wilmington DE
Cathy J. Hamilton - Wilmington DE
Steven M. Hansen - Kinston NC
Hyunkook Shin - Wilmington DE
Raymond F. Tietz - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

A61F 1346
C08G 63199
C08G 6320
C08G 63672

US Classification:

604365

Abstract:

The invention provides novel polyesters, fibers and films, nonwovens from the fibers and disposable products of the polyesters such as diapers. The products are degradable under the conditions typically existing in waste composting processes, have low ingredient costs and yet provide strength and toughness properties adequate for end uses such as in disposable diapers. The polyesters are based upon polyethylene terphthalate copolymerized with a cycloaliphatic diacid, preferably hexahydroterephthalic acid, and containing alkali metal or alkaline earth metal sulfo groups, such as a metal 5-sulfoisophthalic acid derivative.

US Patent:

20190284151, Sep 19, 2019

Filed:

Jun 2, 2017

Appl. No.:

16/303005

Inventors:

- Wilmington DE, US
Jacob G. Dickinson - Wilmington DE, US
David William Drew - Newark DE, US
Paul Joseph Fagan - Wilmington DE, US
Francis G. Gallagher - Wilmington DE, US
Keith M. Hutchenson - Lincoln University PA, US
Israbel Liberis - Pomona NY, US
Kenneth Mersman - Newark DE, US
Gregg Sunshine - Wilmington DE, US

International Classification:

C07D 307/50

Abstract:

The disclosure relates to an efficient process for the production of a furan derivative from C5 and/or C6 sugars. The process utilizes a water immiscible organic solvent system comprising at least one alkyl phenol and at least one alkylated naphthalene.