公开(公告)号：US5063003A

公开(公告)日：1991-11-05

申请号：US436890

申请日：1989-11-15

Applicant: Carlos Gonzalez-Oliver

Inventor： Carlos Gonzalez-Oliver

IPC: C03B8/02 ,  C03B19/06 ,  C03B19/10 ,  C03B19/12 ,  C03B20/00 ,  C03B32/00 ,  C03C1/00 ,  C03C3/06 ,  B29B9/00 ,  C01B33/12

CPC classification number: C03C3/06 ,  C03B19/06 ,  C03B19/066 ,  C03B19/1065 ,  C03B20/00 ,  C03B32/00 ,  C03C1/006 ,  C03C2201/02 ,  C03C2203/26

Abstract: The method involves prehydrolysing alkoxysilanes and atomizing to droplets which are then cured to hardened beads with no or very low porosity and narrow size distribution by slurrying with aqueous ammonia. The cured beads are mixed with binders and the resulting pastes are compacted to green forms; the greens are sintered to fused silica-like objects at temperatures significantly lower than the melting of silica.

公开(公告)号：US5004488A

公开(公告)日：1991-04-02

申请号：US331692

申请日：1989-03-20

Applicant: Vikram P. Mehrotra ,  Ray E. Barker

Inventor： Vikram P. Mehrotra ,  Ray E. Barker

IPC: C01B33/12 ,  C03B19/10 ,  C03B20/00 ,  C03C3/06 ,  C03C12/00

CPC classification number: C03C12/00 ,  C03B19/102 ,  C03C3/06 ,  C03C2201/02 ,  C03C2203/50

Abstract: High purity fused silica particles are made by heating relatively low density silica flour in a high temperature flame. The silica flour feed rate, flame temperature, and collection zone temperature are adjusted to produce an aggregate of surface-bonded fused silica particles. The aggregate is shaped like a honeycomb and can be ground autogenously without introducing impurities into the final product.

公开(公告)号：US4883521A

公开(公告)日：1989-11-28

申请号：US249317

申请日：1988-09-26

Applicant: Takaaki Shimizu ,  Syuji Tanaka

Inventor： Takaaki Shimizu ,  Syuji Tanaka

IPC: C03B8/02 ,  C03C1/00 ,  C03C3/06 ,  C03B37/016

CPC classification number: C03C3/06 ,  C03C1/006 ,  C03C2201/02 ,  C03C2203/26 ,  C03C2203/32 ,  Y10S65/901

Abstract: An improved sol-gel method is proposed for the preparation of a transparent silica gel block, in which a deposit of fine silica particles having a controlled particle diameter as prepared by hydrolyzing an alkoxy silane in the presence of ammonia is dispersed in a silica sol solution prepared in an acidic condition and settled therein to form a structure of closest-packing prior to gelation, drying, sintering and vitrification so that silica glass blocks can be obtained with low volume shrinkage from the wet gel in an improved yield without cracks, bubbles and haziness. The improvement can be further enhanced when two separately prepared deposits of silica particles having larger and smaller particle diameters are dispersed as combined in the silica sol solution, especially, when the particle diameter in one deposit is not exceeding 22.5% of that in the other deposit.

公开(公告)号：US4801318A

公开(公告)日：1989-01-31

申请号：US8226

申请日：1987-01-29

Applicant: Motoyuki Toki ,  Sadao Kanbe ,  Satoru Miyashita ,  Tetsuhiko Takeuchi

Inventor： Motoyuki Toki ,  Sadao Kanbe ,  Satoru Miyashita ,  Tetsuhiko Takeuchi

IPC: C03B8/02 ,  C03B19/12 ,  C03C1/00 ,  C03C3/06 ,  C03B19/06

CPC classification number: C03C1/006 ,  C03B19/12 ,  C03C3/06 ,  C03C2201/02 ,  C03C2203/26 ,  C03C2203/34 ,  Y02P40/57 ,  Y10S65/901

Abstract: In a forming a silica glass at low temperature, a fumed silica is added to a hydrolyzed solution of a metal alcoxide. 0.2-5 mol of fumed silica is added to 1 mol of metal alcoxide. Being uniformly dispersed, the solution is gelled and dried to be dry gel and then sintered to be non-porous. This process allows a practically large sized silica glass to be materialized which has been impossible by the previous sol-gel technology. In addition, a further large silica glass can be prepared by adjusting pH value to 3-6 with addition of base in the sol solution.

公开(公告)号：US4419115A

公开(公告)日：1983-12-06

申请号：US288788

申请日：1981-07-31

Applicant: David W. Johnson, Jr. ,  John B. MacChesney ,  Eliezer M. Rabinovich

Inventor： David W. Johnson, Jr. ,  John B. MacChesney ,  Eliezer M. Rabinovich

IPC: C03B8/02 ,  C03B19/12 ,  C03B37/016 ,  C03C1/00 ,  C03C3/06 ,  C03C13/04 ,  G02B6/00 ,  C03B37/01 ,  C03B19/06

CPC classification number: C03C3/06 ,  C03B19/12 ,  C03B37/016 ,  C03C1/006 ,  C03C2201/02 ,  C03C2201/10 ,  C03C2201/28 ,  C03C2201/31 ,  C03C2203/22 ,  Y10S65/901

Abstract: High-silica glasses are formed by sintering a dried gel at temperatures below the liquidus. The gel may be formed by mixing colloidal silica particles or silica-containing liquids with appropriate liquids. Fragmentation of the gel during drying is advantageously avoided by redispersing the dried gel or sol in a liquid to yield a colloidal suspension which is then gelled, dried, and finally sintered below the liquidus.

Abstract translation: 通过在低于液相线的温度下烧结干燥的凝胶来形成高二氧化硅玻璃。 可以通过将胶体二氧化硅颗粒或含二氧化硅的液体与适当的液体混合来形成凝胶。 通过将干燥的凝胶或溶胶再分散在液体中以产生胶体悬浮液，有利地避免了干燥期间凝胶的碎裂，然后将其胶凝，干燥，最后在液相线下方烧结。

公开(公告)号：US4317668A

公开(公告)日：1982-03-02

申请号：US226876

申请日：1981-01-21

Applicant: Kenzo Susa ,  Iwao Matsuyama ,  Shin Satoh ,  Tsuneo Suganuma

Inventor： Kenzo Susa ,  Iwao Matsuyama ,  Shin Satoh ,  Tsuneo Suganuma

IPC: C03B8/02 ,  C03B19/12 ,  C03B20/00 ,  C03B37/014 ,  C03B37/016 ,  C03C3/06 ,  G02B6/00 ,  C03B19/06 ,  C01B33/12

CPC classification number: C03B19/12 ,  C03B37/016 ,  C03C3/06 ,  C03C2201/02 ,  C03C2203/26 ,  C03C2203/50 ,  Y10S65/901

Abstract: A method for producing silica glass wherein a dry silica gel subjected to a water desorption treatment and a carbon removal treatment is heated and has its temperature raised in an atmosphere containing chlorine, to perform a hydroxyl group removal treatment, the resultant silica gel is thereafter heated to a temperature of approximately 1,000.degree. C.-1,100.degree. C. in an atmosphere containing at least 1% of oxygen, to perform a chlorine removal treatment, and the resultant silica gel is further heated to a temperature of 1,050.degree. C.-1,300.degree. C. in He or in vacuum, to perform a sintering treatment. The silica glass thus produced does not form bubbles even when heated to high temperatures of or above 1,300.degree. C. Therefore, it is easily worked and it is free from the lowering of transparency attributed to the bubble formation.

Abstract translation: 将经过水解吸处理和除碳处理的干燥硅胶加热并在含氯气氛中升温的硅石玻璃的制造方法进行羟基去除处理，然后将所得硅胶加热 在含有至少1％氧气的气氛中温度为约1000℃-111℃，进行除氯处理，所得硅胶进一步加热至1050℃-1.300℃ 在He中或在真空中进行烧结处理。 即使加热到1300℃以上的高温，这样制造的石英玻璃也不会形成气泡。因此，容易加工，并且不会降低由于气泡形成引起的透明度。

公开(公告)号：US4200681A

公开(公告)日：1980-04-29

申请号：US959586

申请日：1978-11-13

Applicant: Walter L. Hall ,  James S. Humphrey, Jr.

Inventor： Walter L. Hall ,  James S. Humphrey, Jr.

IPC: B29D11/00 ,  B32B17/10 ,  C03C3/06 ,  C03C27/12 ,  C08J7/04 ,  C23C14/02 ,  C23C14/10 ,  B32B27/30 ,  B32B27/06 ,  B32B27/08

CPC classification number: C23C14/10 ,  B29D11/00865 ,  C03C3/06 ,  C08J7/045 ,  C23C14/024 ,  C03C2201/02 ,  C03C2201/06 ,  C03C2203/40 ,  C08J2369/00 ,  Y10T428/31507 ,  Y10T428/31645

Abstract: An abrasion, scratch, mar and solvent resistant glass coated non-opaque shaped polycarbonate article comprising a polycarbonate substrate having deposited on the surface thereof (i) an intermediate primer layer containing the photoreaction products of certain polyfunctional acrylic monomers; and (ii) a top layer of vapor deposited glass.

Abstract translation: 包括具有沉积在其表面上的聚碳酸酯基材的耐磨损，耐擦伤，耐磨和耐溶剂的玻璃涂层的非不透明形聚碳酸酯制品（i）含有某些多官能丙烯酸类单体的光反应产物的中间底漆层; 和（ii）蒸镀玻璃顶层。

公开(公告)号：US4113844A

公开(公告)日：1978-09-12

申请号：US733400

申请日：1976-10-18

Applicant: Tadashi Tokimoto ,  Kazumasa Kawaguchi ,  Junji Izawa ,  Yoshinobu Hiraishi

Inventor： Tadashi Tokimoto ,  Kazumasa Kawaguchi ,  Junji Izawa ,  Yoshinobu Hiraishi

IPC: C03B37/018 ,  C03B19/14 ,  C03B37/014 ,  C03C3/06 ,  G02B6/00 ,  C01B33/12

CPC classification number: C03B37/0142 ,  C03B19/1423 ,  C03C3/06 ,  C03B2207/06 ,  C03B2207/20 ,  C03B2207/26 ,  C03B2207/32 ,  C03B2207/36 ,  C03B2207/60 ,  C03B2207/62 ,  C03C2201/02 ,  C03C2203/40 ,  Y02P40/57

Abstract: A method of producing high-purity transparent vitreous silica body through flame hydrolysis of high-purity silane type gas, comprising forming the width in the sectional direction of the reduction area of said flame so as to be about more than 1.5 times as against the diameter of the formed vitreous silica body, and the length of the reduction area of said flame so as to be about more than 2.5 times as against said diameter, while retaining the head portion of the formed vitreous silica body within the reduction area of said flame to synthesize the high-purity transparent vitreous silica body.

公开(公告)号：US4083708A

公开(公告)日：1978-04-11

申请号：US815142

申请日：1977-07-13

Applicant: Carl E. Heath ,  Daniel Grafstein ,  John V. Milewski

Inventor： Carl E. Heath ,  Daniel Grafstein ,  John V. Milewski

IPC: C03C3/00 ,  C03C3/06 ,  C03C25/10 ,  C23C16/01 ,  C23C16/40 ,  C23C16/448 ,  C03C19/00 ,  C03C17/00 ,  C03C25/02

CPC classification number: C23C16/402 ,  C03C25/10 ,  C03C3/00 ,  C03C3/06 ,  C23C16/01 ,  C23C16/4488 ,  C03C2201/02 ,  C03C2203/40

Abstract: Adherent layers of glass are deposited on a preform or substrate via the controlled oxidation of a glass precursor, such as silicon monoxide, in the vapor state, thereby providing unusual shaped composite articles having a glass coating on the substrate. A preform or substrate such as carbon can subsequently be oxidized, thereby providing a glass microcapillary of exceedingly uniform dimensions.

Abstract translation: 玻璃的粘附层通过蒸汽状态下的玻璃前体（例如一氧化硅）的受控氧化而沉积在预制件或基底上，从而提供在基底上具有玻璃涂层的异常成形的复合制品。 预先形成的碳或碳基材料随后可以被氧化，从而提供尺寸非常均匀的玻璃微毛细管。

公开(公告)号：US2904713A

公开(公告)日：1959-09-15

申请号：US39446253

申请日：1953-11-25

Applicant: HERAEUS SCHOTT QUARZSCHMELZE

Inventor： HEINRICH HERAEUS WILHELM ,  HEINRICH MOHN

IPC: C03B19/01 ,  C03B23/047 ,  C03B23/049 ,  C03C3/06 ,  H01J5/04

CPC classification number: C03B23/047 ,  C03B19/01 ,  C03B23/049 ,  C03C3/06 ,  C03C2201/02 ,  C03C2203/42 ,  H01J5/04