Patent EP0510653A1 successfully refreshed from Google Patents.
EP0510653A1
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EP
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Highly heat resistant glass fiber and process for its production
Assignee: AGC Inc
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Filing: 1992-04-23
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Granted: —
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Expires: 2012-04-23
Abstract
Abstract Highly heat resistant glass fiber which comprises from 0.1 to 2.0 wt% of Al₂O₃, from 0.1 to 2.0 wt% of TiO₂, from 96 to 99.8 wt% of SiO₂ and not more than 0.03 wt% of the sum of alkali metal oxides and alkaline earth metal oxides. A sol-gel process for its production is disclosed and its use as a heat insulating material.
Inventors
- 👤 Naoki C/O Asahi Glass Company Ltd. Taneda
- 👤 Kouichi C/O Asahi Glass Company Ltd. Numata
- 👤 Takashi C/O Asahi Glass Company Ltd. Mukaiyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 09:03
CPC Classifications
C; C03; C03C; C03C13/00; C03B; C03B37/00; C03B37/01; C03B37/011; C03C1/00; C03C1/006; C03C3/00; C03C3/04; C03C3/06; C30; C30B; C30B35/00; C03C2201/00; C03C2201/06; C03C2201/30; C03C2201/32; C03C2201/40; C03C2201/42; C03C2203/00; C03C2203/20; C03C2203/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
46 words
Highly heat resistant glass fiber which comprises from 0.1 to 2.0 wt% of Al₂O₃, from 0.1 to 2.0 wt% of TiO₂, from 96 to 99.8 wt% of SiO₂ and not more than 0.03 wt% of the sum of alkali metal oxides and alkaline earth metal oxides.
Claim 2
Dependent Claim
28 words
The highly heat resistant glass fiber according to Claim 1, wherein the sum of alkali metal oxides and alkaline earth metal oxides is not more than 0.01 wt%.
Claim 3
Dependent Claim
51 words
The highly heat resistant glass fiber according to Claim 1, which comprises from 0.1 to 0.6 wt% of Al₂O₃, from 0.1 to 0.8 wt% of TiO₂, from 98.6 to 99.8 wt% of SiO₂ and not more than 0.03 wt% of the sum of alkali metal oxides and alkaline earth metal oxides.
Claim 4
Dependent Claim
28 words
The highly heat resistant glass fiber according to Claim 3, wherein the sum of alkali metal oxides and alkaline earth metal oxides is not more than 0.01 wt%.
Claim 5
Dependent Claim
67 words
A process for producing highly heat resistant glass fiber, which comprises adding aluminum and titanium chelate compounds to a silicon alkoxide solution, reacting the mixture until the viscosity becomes to be from 10 to 200 poise (as measured at 25°C), followed by dry spinning to form gel fiber, and sintering the gel fiber at a temperature of from 800 to 1,100°C for a predetermined period of time.
Claim 6
Dependent Claim
23 words
The process for producing highly heat resistant glass fiber according to Claim 3, wherein the aluminum chelate compound is a chelated aluminum alkoxide.
Claim 7
Dependent Claim
23 words
The process for producing highly heat resistant glass fiber according to Claim 3, wherein the titanium chelate compound is a chelated titanium alkoxide.
Claim 8
Dependent Claim
15 words
A product made of the highly heat resistant glass fiber as defined in Claim 1.
Claim 9
Dependent Claim
17 words
A heat insulating material made of the highly heat resistant glass fiber as defined in Claim 1.
Claim 10
Dependent Claim
25 words
A heat insulating collar for a semiconductor production diffusion furnace, which is made of the highly heat resistant glass fiber as defined in Claim 1.
References Cited (Backward Citations)
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