Francis M Logullo

US Patent:

42384400, Dec 9, 1980

Filed:

Dec 29, 1978

Appl. No.:

6/000380

Inventors:

Francis M. Logullo - Hockessin DE

Assignee:

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

International Classification:

D01D 508

US Classification:

264176F

Abstract:

Acrylonitrile polymers containing at least 91% by weight acrylonitrile are spun from solutions having a polymer concentration of 38 to 75% by weight. Useful polymers have an intrinsic viscosity of 0. 6 to 2. 0, most preferably 0. 9 to 1. 1, 7 to 23. mu. eq. /g. enolizable groups after mild acid treatment, 15 to 70. mu. eq. /g. thioether ends derived from a water insoluble mercaptan and less than 3. mu. eq. /g. oxidizable hydrolysis fragments.

US Patent:

45965820, Jun 24, 1986

Filed:

Jul 13, 1983

Appl. No.:

6/513437

Inventors:

Francis M. Logullo - Hockessin DE

Assignee:

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

International Classification:

D02G 300

US Classification:

81156

Abstract:

Aramid fiber is coated with certain sulfonyl azides to improve adhesion to polymer matrices.

US Patent:

45156360, May 7, 1985

Filed:

Aug 17, 1984

Appl. No.:

6/641860

Inventors:

Thomas E. Carney - Wilmington DE
Allan R. Champion - Wilmington DE
Francis M. Logullo - Hockessin DE

Assignee:

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

International Classification:

C04B 702
C04B 735

US Classification:

106 90

Abstract:

Cement product reinforced with p-aramid or acrylic fiber coated with certain sulfonyl azides.

US Patent:

47670177, Aug 30, 1988

Filed:

Apr 16, 1987

Appl. No.:

7/039116

Inventors:

Francis M. Logullo - Hockessin DE
Yun-Tai Wu - Newtown Square PA
George E. Zahr - Wilmington DE

Assignee:

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

International Classification:

F25J 0000

US Classification:

220 3

Abstract:

A filament-wound pressure vessel constructed of a rigid composite of an epoxy resin matrix reinforced with continuous filaments of a p-aramid coated with an adhesion modifier.

US Patent:

48868752, Dec 12, 1989

Filed:

Dec 7, 1988

Appl. No.:

7/281036

Inventors:

Frank P. Gay - Hockessin DE
Francis M. Logullo - Hockessin DE
Robert R. Luise - Boothwyn PA
Mark P. Mack - Newark DE

Assignee:

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

International Classification:

C08G 6312

US Classification:

525439

Abstract:

A process for improving the stability of a polyarylate resin by reducing the terminal carboxyl acid group concentration of the polyarylate resin, the process being comprised of melting a mixture of the polyarylate resin and an aromatic carbonate capping agent and reacting the mixture under heat and, if necessary, vacuum until the concentration of the terminal carboxyl acid groups is reduced to less than that of the polyarylate resin prior to end-capping. The process also results in a polyarylate resin with a decreased flammability rating when the aromatic carbonate capping agent is bromine substituted.

US Patent:

46788212, Jul 7, 1987

Filed:

May 31, 1985

Appl. No.:

6/739861

Inventors:

Francis M. Logullo - Hockessin DE
Yun-Tai Wu - Newtown Square PA
George E. Zahr - Wilmington DE

Assignee:

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

International Classification:

C08K 900

US Classification:

523205

Abstract:

A rigid composite of an epoxy resin matrix reinforced with continuous filaments of a p-aramid coated with an adhesion modifier.

US Patent:

45006997, Feb 19, 1985

Filed:

Jun 26, 1984

Appl. No.:

6/624829

Inventors:

Robert S. Irwin - Wilmington DE
Francis M. Logullo - Hockessin DE

Assignee:

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

International Classification:

C08G 6318

US Classification:

528128

Abstract:

Copolyesters useful for fibers from certain monosubstituted hydroquinones, terephthalic acid and certain substituted benzophenones.

US Patent:

51029430, Apr 7, 1992

Filed:

Dec 4, 1990

Appl. No.:

7/622420

Inventors:

Francis M. Logullo - Hockessin DE

Assignee:

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

International Classification:

C08L 3300

US Classification:

524487

Abstract:

Thermoformed trays prepared from a blend of 90 to 99. 9 percent of polyethylene terephthalate resin, a small amount of sodium ion, and a small amount of wax exhibit effective crystallization rates and improved trimming and stacking properties.