Chiu L Chan

US Patent:

6372812, Apr 16, 2002

Filed:

Feb 20, 2001

Appl. No.:

09/789056

Inventors:

Beat Niederoest - Marlton NJ
Robert Mohr - Williamstown NJ
Rocco P. Triolo - Broomall PA
Chiu Y. Chan - Wilmington DE

Assignee:

Foamex L.P. - Linwood PA

International Classification:

C08G 1828

US Classification:

521137, 521130, 521174

Abstract:

Polyurethane foams formed under vacuum (below atmospheric pressure) conditions using methylene diisocyanate or a specific mixture of polyisocyanate and with a major portion of methylene diisocyanate (MDI) with a specific mixture of polyether and graft polyols produces cushioning foams with lower density (1. 4 to 1. 8 pounds per cubic foot) and higher support factor (above 2. 4). The foam-forming ingredients are mixed together and foamed under controlled pressures in the range 0. 5 to 0. 9 bar (absolute), preferably 0. 6 to 0. 8 bar (absolute). A major portion of the MDI is 4,4â methylene diisocyanate.

US Patent:

6420448, Jul 16, 2002

Filed:

Jan 18, 2001

Appl. No.:

09/765023

Inventors:

Michael F. Hnatow - West Chester PA
Vincenzo A. Bonaddio - Boothwyn PA
Chiu Y. Chan - Wilmington DE
Robert Mohr - Williamstown NJ

Assignee:

Foamex LP - Linwood PA

International Classification:

C08G 1808

US Classification:

521174, 264 51, 264 52, 521126, 521128, 521129, 521130, 521137

Abstract:

Polyurethane foams formed under vacuum (below atmospheric pressure) conditions using a specific mixture of polyisocyanate and with a major portion of methylene diisocyanate (MDI) and a specific mixture of polyether and graft polyols exhibit superb static shock cushioning characteristics (energy absorption) as illustrated by drop curves of deceleration versus static load. The foam-forming ingredients are mixed together and foamed under controlled pressures in the range 0. 5 to 0. 90 bar (absolute), preferably 0. 5 to 0. 8 bar (absolute). A major portion of the MDI is 4, 4â methylene diisocyanate.

US Patent:

6508362, Jan 21, 2003

Filed:

Dec 13, 2000

Appl. No.:

09/735563

Inventors:

Michael F. Hnatow - West Chester PA
Vincenzo A. Bonaddio - Boothwyn PA
Chiu Y. Chan - Wilmington DE
Daniel V. Tursi - Media PA
John R. Rucker - Norwood PA

Assignee:

Foamex L.P. - Linwood PA

International Classification:

B65D 8102

US Classification:

206523, 206484, 206591

Abstract:

A hinged flexible polyurethane foam protective packaging element is formed from a flexible polyurethane foam laminated to a polyethylene, polypropylene or urethane film. The flexible polyurethane foam has a density in the range of 0. 7 lbs/ft to 2. 8 lbs/ft and IFD in the range of 25 lbs to 270 lbs. The film has a thickness from 2 mil to 125 mil. The foam is cut through all or substantially all of its thickness without cutting through a portion of the film. The uncut portion of the film creates a repeatably bendable hinge.

US Patent:

6653363, Nov 25, 2003

Filed:

Dec 4, 2002

Appl. No.:

10/309799

Inventors:

Chiu Y. Chan - Wilmington DE
Beat Niederoest - Marlton NJ

Assignee:

Foamex, L.P. - Linwood PA

International Classification:

C08G 1828

US Classification:

521174, 521126, 521128, 521130, 521137, 521170

Abstract:

Foaming a polyurethane foam at above atmospheric pressure conditions using a mixture of polyisocyanate and a specific mixture of low molecular weight (high OH number) polyether and graft polyols produces viscoelastic foams with high firmness, low energy losses and high temperature sensitivity such that firmness is reduced by at least 25% when the foam is heated from room temperature (e. g. , about 70Â F. (21Â C. )) to 100Â F. (38Â C. ). The foam-forming ingredients are mixed together and foamed at controlled pressures in the range 1. 05 to 1. 5 bar (absolute), preferably 1. 1 to 1. 3 bar (absolute).

US Patent:

6716890, Apr 6, 2004

Filed:

Jan 30, 2003

Appl. No.:

10/354925

Inventors:

Beat Niederoest - Marlton NJ
Chiu Y. Chan - Wilmington DE
Neil Craig Silverman - Huntington Beach CA

Assignee:

Foamex L.P. - Linwood PA

International Classification:

C08G 1828

US Classification:

521126, 521128, 521130, 521137, 521170, 521174

Abstract:

Polyurethane foams formed using a specific mixture of polyether and graft polyols with toluene diisocyanate have fine cell size (over 70 pores per inch) and higher durability with IFD retention over 70% after 12,000 cycles of roll-shear. The foam-forming ingredients are mixed together and foamed at controlled pressures in the range 1. 0 to 1. 5 (absolute), preferably 1. 05 to 1. 5 bar (absolute). The foams make particularly good carpet cushions.

US Patent:

6734220, May 11, 2004

Filed:

Aug 27, 2002

Appl. No.:

10/229334

Inventors:

Beat Niederoest - Marlton NJ
Chiu Y. Chan - Wilmington DE
Robert Mohr - Williamstown NJ

Assignee:

Foamex L.P. - Linwood PA

International Classification:

C08G 1800

US Classification:

521174, 521126, 521128, 521130, 521137, 521170

Abstract:

Polyurethane foams formed at above atmospheric pressure conditions using methylene diisocyanate or a specific mixture of polyisocyanate and with a major portion of methylene diisocyanate (MDI) with a specific mixture of polyether and graft polyols produces high density viscoelastic foams with improved hand touch (surface smoothness) that better retain viscoelasticity over time. The foam-forming ingredients are mixed together and foamed at controlled pressures in the range 1. 05 to 1. 5 bar (absolute), preferably 1. 1 to 1. 3 bar (absolute).

US Patent:

7597745, Oct 6, 2009

Filed:

Apr 3, 2006

Appl. No.:

11/278443

Inventors:

Jeffrey I. Lebowitz - Drexel Hill PA, US
Joseph W. Lovette - Newark DE, US
Chiu Y. Chan - Wilmington DE, US

Assignee:

Foamex Innovations Operating Company - Media PA

International Classification:

B01D 53/02
C08G 18/22

US Classification:

95146, 95143, 95900, 95901, 95902, 96121, 96131, 96132, 96153, 96154, 553853, 55486, 55487, 55495, 55512, 55514, 55520, 55523, 55524, 55528

Abstract:

A porous filter medium forms a filter or liner for extracting hydrocarbons from vapors emitted from a motorized vehicle, device or appliance fuel tank. The filter medium is a polymer network of a foam, nonwoven or collection of particles and has fine pore size and a butane working capacity (W/W %) of 4. 0 percent or higher.

US Patent:

7687139, Mar 30, 2010

Filed:

Feb 26, 2008

Appl. No.:

12/037196

Inventors:

Chiu Y. Chan - Wilmington DE, US
Sharon A. Free - Wallingford PA, US
Joshua D. Land - Media PA, US
Marc J. Albero - Springfield PA, US
Jagdish Patel - Sewell NJ, US

Assignee:

Foamex Innovations Operating Company - Media PA

International Classification:

B32B 3/00
B32B 3/26

US Classification:

4283166

Abstract:

A hydrophilic ester polyurethane foam is flame laminated to a substrate using a thin sacrificial layer, preferably a sacrificial foam layer. The sacrificial layer in the resulting laminate structure has a thickness of 1. 5 mm or less, and preferably is substantially burnt away. The resulting laminate exhibits good bond strength along its length and width without loss of liquid wicking and absorptive properties.