IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0816338
(1991-12-31)
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발명자
/ 주소 |
- Seo Kab S. (Kingsport TN) Landry Christine J. (Honeoye Falls NY) Coltrain Bradley K. (Fairport NY) Cloyd James D. (Jonesborough TN)
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출원인 / 주소 |
- Eastman Kodak Company (Rochester NY 02)
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인용정보 |
피인용 횟수 :
3 인용 특허 :
0 |
초록
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An improved extrudable solution such as a cellulose acetate/acetone spinning solution is provided containing cellulose ester, solvent, metal oxide precursor, acid, and water. The solution is extruded such as by spinning and produces a shaped article such as a cellulose acetate fiber containing metal
An improved extrudable solution such as a cellulose acetate/acetone spinning solution is provided containing cellulose ester, solvent, metal oxide precursor, acid, and water. The solution is extruded such as by spinning and produces a shaped article such as a cellulose acetate fiber containing metal oxide interpenetrating networks.
대표청구항
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A process for the production of cellulose acetate fibers comprising: (I) homogeneously mixing to form a solution (a) about 10 to 40 weight percent based on the totals of (a), (b), and (c), cellulose acetate; (b) about 40 to 90 weight percent based on the totals of (a), (b), and (c), acetone; (c) abo
A process for the production of cellulose acetate fibers comprising: (I) homogeneously mixing to form a solution (a) about 10 to 40 weight percent based on the totals of (a), (b), and (c), cellulose acetate; (b) about 40 to 90 weight percent based on the totals of (a), (b), and (c), acetone; (c) about up to 30 weight percent based on the totals of (a), (b), and (c), metal oxide precursor of the formula MXn or MRXn-1 wherein M is silicon, titanium, boron, aluminum, zirconium, tin, germanium, tantalum, phosphorus, lead, arsenic, lanthanum, iron, indium, copper, yttrium, barium, magnesium or mixtures thereof; R is alkyl or aryl or substituted alkyl or aryl of 1 to 20 carbon atoms; X is halogen, alkoxy, aryloxy, carboxy, or an -NR′2 group in which R′is hydrogen, alkyl, or aryl; and n is the valence of the metal; (d) acid, the molar ratio of acid expressed as hydronium ions H3O+to mole metal oxide precursor being between about 0.0005 and 0.02; and (e) water, the molar ratio of water to metal oxide precursor being between about 1 and 20 wherein said solution has a zero-shear viscosity at 29°C. between about 200 and 4,000 poise; (II) filtering to form a spinning solution; and (III) spinning said spinning solution at a solution temperature of 25°-60°C. at 200-1,500 meter/min through spinneret holes having a hole area equivalent to a circular diameter of 25-100 m0.5 to 3, forming filaments with dry linear densities of 0.5 to 8 denier per filament and a total product denier of from 10,000 to 50,000 denier.
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