Crystalline resin sandwich films

Details Crystalline resin sandwich films Crystalline resin sandwich films

2004-06-21

2010-02-23

Salvatore, Lynda (Department: 1794)

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Nonwoven fabric

Nonwoven fabric with a preformed polymeric film or sheet

C525S524000

Reexamination Certificate

active

07666804

ABSTRACT:
A resin composition that is storable at ambient temperatures. The resin composition forms a cured resin when exposed to a curing agent and heated to a curing temperature that is relatively close to ambient temperature. The resin composition includes a crystalline resin component that is sandwiched between two non-crystalline resin components to provide a zone that is rich in crystalline thermosetting resin. The crystalline thermosetting resin has a melting point that is above ambient temperature, but below the curing temperature. The viscosity of the resin component changes from a high viscosity state to a low viscosity state when the temperature is increased from ambient temperature to the curing temperature.

REFERENCES:
patent: 5206313 (1993-04-01), Ono et al.
patent: 7267868 (2007-09-01), Gallet et al.
patent: 1050564 (2000-11-01), None
patent: 2000/281745 (2000-10-01), None
patent: 09077847 (2009-04-01), None
patent: PCT IB2004/000944 (2004-01-01), None
U.S. Appl. No. 10/586,567, Harrington et al.

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