Non-thermoplastic starch fibers and starch composition for...

Details Non-thermoplastic starch fibers and starch composition for... Non-thermoplastic starch fibers and starch composition for...

2006-04-11

2006-04-11

Brunsman, David (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

C106S208100, C106S208300, C106S208400, C106S208500, C106S210100, C106S214200, C106S215100, C106S217010, C106S217100, C524S047000, C524S049000, C524S050000

Reexamination Certificate

active

07025821

ABSTRACT:
Non-thermoplastic starch fibers having no melting point and having apparent peak wet tensile stress greater than about 0.2 MegaPascals (MPa). The fibers can be manufactured from a composition comprising a modified starch and a cross-linking agent. The composition can have a shear viscosity from about 1 Pascal·Seconds to about 80 Pascal·Seconds and an apparent extensional viscosity in the range of from about 150 Pascal·Seconds to about 13,000 Pascal·Seconds. The composition can comprise from about 50% to about 75% by weight of a modified starch; from about 0.1% to about 10% by weight of an aldehyde cross-linking agent; and from about 25% to about 50% by weight of water. Prior to cross-linking, the modified starch can have a weight average molecular weight greater than about 100,000 g/mol.

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