发明名称 |
PROCESSES FOR PRODUCING SILICA GLASS PRODUCT |
摘要 |
A process for producing a transparent or opaque silica glass product including mixing a silica fine powder and a cellulose derivative and injection molding the mixture, followed by degreasing treatment and baking treatment, which is characterized in that the cellulose derivative is a cellulose derivative which causes reversible thermal gelation in an aqueous solution of at least one member selected from methyl cellulose, hydroxypropylmethyl cellulose and hydroxyethylmethyl cellulose; in producing a transparent silica glass product, the cellulose derivative is added in water heated at a gelation temperature thereof or higher, and after cooling, the formed aqueous solution is kneaded with the silica fine powder; and in producing an opaque silica glass product, the cellulose derivative is added in a silica slurry containing a silica powder and heated at a gelation temperature of the cellulose derivative or higher. |
申请公布号 |
EP1857421(A1) |
申请公布日期 |
2007.11.21 |
申请号 |
EP20060713410 |
申请日期 |
2006.02.09 |
申请人 |
SHIN-ETSU QUARTZ PRODUCTS CO., LTD.;SHIN-ETSU CHEMICAL COMPANY, LTD. |
发明人 |
WATANABE, HIROYUKI;FUJINOKI, AKIRA;IMAIZUMI, TAKAYUKI;HAYAKAWA, KAZUHISA;NIINOBE, SHINGO |
分类号 |
C03B20/00;C03B19/06 |
主分类号 |
C03B20/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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