IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0616031
(2000-07-13)
|
우선권정보 |
JP-0200453 (1999-07-14) |
발명자
/ 주소 |
- Nagata, Hideki
- Mori, Toshiharu
- Yuki, Hiroshi
- Kawai, Hideki
- Sugimoto, Akira
- Ishimaru, Kazuhiko
|
출원인 / 주소 |
|
대리인 / 주소 |
Burns, Doane, Swecker & Mathis, LLP
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
31 |
초록
A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 50.5 to 56 wt % of SiO2,from 10 to 30 wt % of Al2O3,from 10 to 30 wt % of MgO, and from 4.2 to 10.6 wt % of TiO2.
대표청구항
▼
A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 50.5 to 56 wt % of SiO2,from 10 to 30 wt % of Al2O3,from 10 to 30 wt % of MgO, and from 4.2 to 10.6 wt % of TiO2. nd carbon microfilaments, wherein said micr
A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 50.5 to 56 wt % of SiO2,from 10 to 30 wt % of Al2O3,from 10 to 30 wt % of MgO, and from 4.2 to 10.6 wt % of TiO2. nd carbon microfilaments, wherein said microfilaments have a cross sectional shape selected from the group consisting of wedge, multi-lobal, hexagonal, and rectangular. 23. The fabric of claim 22, wherein said fabric is selected from the group consisting of woven fabrics, knit fabrics, and nonwoven fabrics. 24. The fabric of claim 22, further comprising resin selected from the group consisting of polyolefins, polyesters, polyamides, polyimides, polyamidimides, polyetherimides, polysulfones, polyether ether ketones, poly(phenylene) sulfides, epoxy and liquid crystalline polymers. 25. The fabric of claim 22, wherein said microfilament has a cross sectional shape selected from the group consisting of wedge, hexagonal, and rectangular. 26. The fabric of claim 22, wherein said microfilament has a multi-lobal cross sectional shape. 27. A pre-preg tape comprising microfilaments selected from the group consisting of oxidized polyacrylonitrile microfilaments and carbon microfilaments, wherein said microfilament has a cross sectional shape selected from the group consisting of wedge, multi-lobal, hexagonal, and rectangular. 28. The pre-preg tape of claim 27, wherein said microfilament has a cross sectional shape selected from the group consisting of wedge, hexagonal, and rectangular. 29. The pre-preg tape of claim 27, wherein said microfilament has a multi-lobal cross sectional shape. 30. A composite article comprising microfilaments selected from the group consisting of oxidized polyacrylonitrile microfilaments and carbon microfilaments, wherein said microfilament has a cross sectional shape selected from the group consisting of wedge, multi-lobal, hexagonal, and rectangular. 31. The composite article of claim 30, wherein said microfilament has a cross sectional shape selected from the group consisting of wedge, hexagonal, and rectangular. 32. The composite article of claim 30, wherein said microfilament has a multi-lobal cross sectional shape. 33. Filtration media comprising microfilaments selected from the group consisting of oxidized polyacrylonitrile microfilaments and carbon microfilaments, wherein said microfilament has a cross sectional shape selected from the group consisting of wedge, multi-lobal, hexagonal, and rectangular. 34. The filtration media of claim 33, wherein said microfilament has a cross sectional shape selected from the group consisting of wedge, hexagonal, and rectangular. 35. The filtration media of claim 33, wherein said microfilament has a multi-lobal cross sectional shape. 36. A multicomponent fiber having dissociable polymer components, comprising: at least one polymer component comprising a melt processable polyacrylonitrile polymer; and at least one fugitive polymer component which is dissociable from said melt processable polyacrylonitrile polymer component. 37. The multicomponent fiber of claim 36, wherein said fugitive polymer is a water soluble polymer. 38. The multicomponent fiber of claim 37, wherein said water soluble polymer is selected from the group consisting of polyvinyl alcohol, polyethylene oxide, polyacrylamide, water soluble copolyester resins, and copolymers, terpolymers, and blends thereof. 39. The multicomponent fiber of claim 36, wherein said fugitive polymer is a solvent soluble polymer. 40. The multicomponent fiber of claim 39, wherein said solvent soluble polymer is selected from the group consisting of polystyrene, polystyrene-acrylonitrile copolymers, and polystyrene-methyl methacrylate copolymers, polyvinyl acetate, and copolymers, terpolymers, and blends thereof. 41. The multicomponent fiber of claim 36, wherein said fugitive polymer comprises a charrable polymer. 42. The multicomponent fiber of claim 41, wherein said charrable polymer is selected from the group consisting of polyamide, polyester, polyester ether, polyolefin, polyvinyl chloride, polyvinylidene chloride, polyurethane, and copolymers, terpolymers, and mixtures thereof. 43. The multicomponent fiber of claim 4
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