EP0228839A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Bicomponent ceramic fibers
Assignee: 3M Co
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Filing: 1986-12-10
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Granted: —
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Expires: 2006-12-10
Abstract
Abstract A continuous, bicomponent, non-vitreous ceramic fiber comprises components existing in a longitudinal side bv side relationship wherein each of the components is derived from a different fiber-forming precursor liquid. Firing the bicomponent fibers in a reducing atmosphere can provide ceramic/ cermet or cermet/cermet fibers wherein each cermet component has a graded composition.
Inventors
- 👤 George M. C/O Minnesota Mining And Rambosek
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 12:11
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/62227; C04B35/62231; C03; C03C; C03C13/00; C03C13/06; B; B22; B22F; B22F1/00; B22F1/06; B22F1/062; D; D01; D01F; D01F9/00; D01F9/08; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4209; D04H1/4382; D04H1/43825; D04H1/43832; D04H1/43838; D04H1/4391; D04H1/43918; D04H1/43912; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2924; Y10T428/2929; Y10T428/2931; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2949; Y10T428/2973; Y10T442/00; Y10T442/30; Y10T442/3065; Y10T442/3089; Y10T442/3114; Y10T442/60; Y10T442/608; Y10T442/609; Y10T442/611
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
29 words
A continuous, bicomponent, non-vitreous ceramic fiber comprising two components in a longitudinally-extending side-by-side relationship wherein each of the components is derived from a different compatible fiber-forming ceramic precursor liquid.
Claim 2
Dependent Claim
29 words
A continuous, bicomponent, non-vitreous ceramic fiber comprising two components in a longitudinally-extending side-by-side relationship wherein each of the components is derived from a different compatible fiber-forming ceramic precursor liquid.
Claim 3
Dependent Claim
36 words
The fiber according to Claim 1 wherein each of the components is different and is independently selected from the group cousisting of titania, alumina-chromia-metal(IV) oxide, alumina-silica, thoria-silica metal(III) oxide, alumina-boria and alumina-boria-silica, zirconia-silica, and combinations thereof.
Claim 4
Dependent Claim
13 words
The fiber according to Claims 1 and 2 which is fired or unfired.
Claim 5
Dependent Claim
34 words
The fiber according to Claims 1 to 3 wherein one ceramic component further comprises at least one additional metal compound or wherein each ceramic component independently further comprises at least one additional meta compound.
Claim 6
Dependent Claim
23 words
The fiber according to Claims 1 to 4 wherein said ceramic components are present in a volume ratio range of 50:50 to 10:90.
Claim 7
Dependent Claim
24 words
The fiber according to Claims 1 to 5 which is at least one of crimped, mono- or bicolor, magnetic, or attractive to a magnet.
Claim 8
Dependent Claim
28 words
The fiber according to Claims 1 to 6 which has been made into a yarn, a woven fabric, a nonwoven web, or a mat of highly crimped fiber.
Claim 9
Dependent Claim
14 words
The nonwoven web according to claim 7 which is useful in catalytic distillation processes.
Claim 10
Independent Claim
107 words
A method for forming a ceramic fiber according to Claims to 7, which comprises the steps of : a) preparing two viscous concentrates of precursor ceramic liquids of different compositions, b) shaping said viscous liquids into a fiber form by drawing or spinning, c) gelling or hydrolyzing the resultant formed fiber to provide a non-refractory green fiber, and d) optionally firing said formed green fiber to convert to a refractory amorphous fiber, firing said formed green fiber to convert it into a refractory fiber comprising a crystalline component, or firing said formed green fiber in a reducing atmosphere to provide a cermet/cermet fiber or a ceramic/cermet fiber.
Claim 11
Dependent Claim
31 words
The method according to Claim 9 wherein said two different viscous concentrates will provide essentially identical final ceramic compositions or wherein said viscous concentrates will provide two different final ceramic compositions.
Claim 12
Independent Claim
32 words
The method according to Claims 9 and 10 wherein at least one of said precursor liquids contains an amount of a meta compound sufficient to provide a mono- or bicolor ceramic fiber.
References Cited (Backward Citations)
No citation records indexed.
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