Dennis Gerard Madeleine

US Patent:

20110159232, Jun 30, 2011

Filed:

Dec 29, 2010

Appl. No.:

12/980434

Inventors:

Dennis Gerard Madeleine - Wilmington DE, US

Assignee:

E. I. DU PONT DE NEMOURS AND COMPANY - Wilmington DE

International Classification:

C08K 5/5357
D05C 17/02

US Classification:

428 97, 524117

Abstract:

Provided are polyester compositions comprising poly(trimethylene terephthalate) and flame retardant additives that are phosphonic acid esters. The compositions can be used to make articles having reduced flammability and reduced yellowness as compared to conventional poly(trimethylene terephthalate) compositions.

US Patent:

20120128924, May 24, 2012

Filed:

May 18, 2011

Appl. No.:

13/110243

Inventors:

Geraldine M. Lenges - Wilmington DE, US
Dennis Gerard Madeleine - Wilmington DE, US
Kalika Ranjan Samant - Hockessin DE, US

Assignee:

E. I. DU PONT DE NEMOURS AND COMPANY - Wilmington DE

International Classification:

B32B 33/00
B29C 47/00
C08G 63/183

US Classification:

428 97, 5283086, 2641761

Abstract:

The present invention relates to recycled poly(trimethylene terephthalate), and products and processes using the recycled poly(trimethylene terephthalate).

US Patent:

20130005207, Jan 3, 2013

Filed:

Dec 28, 2011

Appl. No.:

13/338326

Inventors:

Neville Everton Drysdale - Newark DE, US
Dennis Gerard Madeleine - Wilmington DE, US
Fredrik Nederberg - Greenville DE, US

Assignee:

E. I. DU PONT DE NEMOURS AND COMPANY - Wilmington DE

International Classification:

B32B 5/02
D04H 13/00
D03D 15/00

US Classification:

442181, 428221, 442304, 442415

Abstract:

Woven, knit, and non-woven fabrics, and garments and other textile goods fabricated therefrom, are prepared from yarns comprising fibers comprising a fluorinated polyester blend prepared by melt blending a fluorovinyl ether functionalized polyester with a non-fluorinated polyester. The fluoroether functionalized polyester can be a homopolymer or a copolymer. The goods so produced exhibit durable soil, oil, and water repellency.

US Patent:

20130056898, Mar 7, 2013

Filed:

Feb 24, 2012

Appl. No.:

13/404314

Inventors:

JOHN HARVEY ENG - Wilmington DE, US
Michael Joseph Molitor - Wilmington DE, US
Dennis Gerard Madeleine - Wilmington DE, US

Assignee:

E I DU PONT DE NEMOURS AND COMPANY - Wilmington DE

International Classification:

B29B 9/06
B29C 47/00

US Classification:

264138, 264178 F

Abstract:

The process creates a radial temperature gradient in an extruded strand in a direction normal to the direction of motion thereof (that is, normal to the longitudinal direction thereof) so that upon exiting the first quench region the surface of the strand has solidified while at least the preponderant portion of the interior of the strand remains above the cold crystallization temperature, TThen, in the annealing region, heat from the warmer interior will be transferred to the cooler surface, causing the surface to heat up into the range of T, thereby inducing the surface to undergo crystallization. Once the surface has undergone crystallization, the strand is thoroughly quenched in a second quench region so that the strand will be ready for pelletization, accumulation or other handling steps.

US Patent:

20130059023, Mar 7, 2013

Filed:

Feb 27, 2012

Appl. No.:

13/405387

Inventors:

Dennis Gerard Madeleine - Wilmington DE, US
Michael Joseph Molitor - Wilmington DE, US
John Harvey Eng - Wilmington DE, US

Assignee:

E I DU PONT DE NEMOURS AND COMPANY - Wilmington DE

International Classification:

B29C 47/08

US Classification:

425 71

Abstract:

An apparatus is described having an extrusion means for extruding a molten polymer strand; a pelletizer; and a trough disposed to convey a polymer strand from the extrusion means to the pelletizer; the trough has an interior bottom surface; a water dispensing means disposed to provide a layer of water on a first portion of the interior bottom surface that is proximate to the extrusion means; a mesh or perforated surface disposed in the trough downstream from the water dispensing means, disposed to permit the separation of water from a water-immersed strand incident upon it; and a second portion of the interior bottom surface downstream from that mesh or perforated surface, disposed to contain a layer of water.

US Patent:

20220290367, Sep 15, 2022

Filed:

Dec 8, 2020

Appl. No.:

17/635873

Inventors:

- Wilmington DE, US
Dennis Gerard Madeleine - Wilmington DE, US

International Classification:

D06N 7/00
D01D 5/22
D01D 5/32

Abstract:

Disclosed herein are carpets whose face fiber comprises a bicomponent fiber comprising one component of poly(ethylene terephthalate) homopolymer or poly(ethylene terephthalate) copolymer and a second component of poly(trimethylene terephthalate) polymer or a blend of poly(trimethylene terephthalate) with poly(ethylene terephthalate) homopolymer or poly(ethylene terephthalate) copolymer, wherein the bicomponent fiber is self-bulking due to differential shrinkage. Also disclosed is an improved process for making a yarn to produce a carpet whose face fiber comprises a self-bulking bicomponent fiber comprising one component of poly(ethylene terephthalate) homopolymer or poly(ethylene terephthalate) copolymer and a second component of poly(trimethylene terephthalate) or a blend of poly(trimethylene terephthalate) with poly(ethylene terephthalate) homopolymer or poly(ethylene terephthalate) copolymer.

US Patent:

20210164131, Jun 3, 2021

Filed:

Jun 26, 2019

Appl. No.:

17/251917

Inventors:

- Wilmington DE, US
Akshay Kumar - GURUGRAM, IN
Dennis Gerard Madeleine - WILMINGTON DE, US
Wayne E. Marsh - BEAR DE, US
Kalika Ranjan Samant - HOCKESSIN DE, US

International Classification:

D01F 6/92
D01F 6/84
D01F 8/14
D02G 3/04

Abstract:

Disclosed herein are spun yarns comprising melt spun staple fiber comprising a first polymer and a second polymer, wherein the first polymer comprises poly(trimethylene terephthalate) or poly(butylene terephthalate) and the second polymer comprises poly(ethylene terephthalate) or Co-PET, wherein Co-PET is a poly(ethylene terephthalate) copolymer comprising isophthalic acid monomer; and wherein the first polymer comprises poly(trimethylene terephthalate) and the weight ratio of the poly(trimethylene terephthalate) to the second polymer is in the range of from about 80:20 to about 10:90; or the the first polymer comprises poly(butylene terephthalate) and the weight ratio of the poly(butylene terephthalate) to the second polymer is in the range of about 90:10 to about 10:90. The spun yarn may further comprise a second staple fiber such as cotton or wool. The spun yarn is useful in preparing fabrics having advantageous properties.

US Patent:

20140306363, Oct 16, 2014

Filed:

Nov 12, 2012

Appl. No.:

14/358184

Inventors:

- Wilmington DE, US
Dennis Gerard Madeleine - Wilmington DE, US

International Classification:

D01D 5/22

US Classification:

264 6

Abstract:

Disclosed is a process for preparing crimpable bicomponent fibers from two poly(trimethylene terephthalate) starting materials that differ from one another in intrinsic viscosity. One starting material is characterized by an intrinsic viscosity ≦0.7 dL/g. The relatively low intrinsic viscosity allows the employment of a low melt temperature, with concomitant reduction in the evolution of acrolein, and without significant degradation in the properties or processibility of the bicomponent fiber.