Stock material or miscellaneous articles – Composite – Of polyamidoester
Reexamination Certificate
2006-12-18
2008-11-25
Salvatore, Lynda (Department: 1794)
Stock material or miscellaneous articles
Composite
Of polyamidoester
C442S152000, C442S164000, C442S180000, C428S422800
Reexamination Certificate
active
07455909
ABSTRACT:
A polymeric dispersion in aqueous phase for use as a polymeric binder for paper and other nonwoven articles is described utilizing a polyisocyanate in combination with said polymeric binder to increase the ratio wet tensile/dry tensile strength. The polyisocyanate seems to be functioning by increasing the fiber to binder interaction rather than by simply increasing the strength/crosslink density of the binder. The polyisocyanate can be blocked isocyanate(s) or water dispersible isocyanate(s). The binder may or may not have isocyanate reactive species along the backbone.
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Stanislawczyk Vic
Wolfinger Mark W.
Dunlap Thoburn T.
Laferty Samuel B.
Lubrizol Advanced Materials, Inc.
Powell Joe A.
Salvatore Lynda
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