Biodegradable bicomponent fibers with improved...

Details Biodegradable bicomponent fibers with improved... Biodegradable bicomponent fibers with improved...

2005-10-11

2005-10-11

Edwards, N. (Department: 1774)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

C428S370000, C428S374000

Reexamination Certificate

active

06953622

ABSTRACT:
A biodegradable hydrophilic binder fiber. These fibers may be produced by co-spinning an aliphatic polyester material in a side-by-side configuration with a polylactide polymer to obtain a fiber with improved material attributes. A multicarboxylic acid may be incorporated into either or both components of the fiber. The aliphatic polyester polymer may be selected from a polybutylene succinate polymer, a polybutylene succinate-co-adipate polymer, or a blend of these polymers. The biodegradable bicomponent fiber exhibits substantial biodegradable properties, yet has improved thermal stability and has significantly reduced shrinkage. The bicomponent fiber may be used in a disposable absorbent product intended for the absorption of fluids such as body fluids.

REFERENCES:
patent: 5698322 (1997-12-01), Tsai et al.
patent: 6177193 (2001-01-01), Tsai et al.
patent: 6506873 (2003-01-01), Ryan et al.
patent: 0 905 292 (1999-03-01), None
patent: WO 98/50611 (1998-11-01), None

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