Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1991-04-05
1991-11-26
Group, Karl
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
501 54, 501 65, 501 66, 501 67, 501 68, 65 31, C03C 304
Patent
active
050682083
ABSTRACT:
Gradient-index glass is produced in a sol-gel process by utilizing water or a mixture of water and alcohol. This technique is particularly suitable for production of glass bodies with a ternary system of metal alkoxides, including silicon alkoxide, an index modifying metal alkoxide, such as alkoxides of titanium and zirconium, and an additional metal alkoxide, such as an alkoxide of aluminum, boron, or germanium.
REFERENCES:
patent: 3938974 (1976-02-01), Macedo et al.
patent: 4302231 (1981-11-01), Macedo et al.
patent: 4686195 (1987-08-01), Yamane
patent: 4731348 (1988-03-01), Gonzales-Oliver
patent: 4797376 (1989-01-01), Caldwell et al.
patent: 4902650 (1990-02-01), Caldwell et al.
Gradient-Index Glass Rods of PbO-K.sub.2 O-B.sub.2 O.sub.3 -SiO.sub.2 System Prepared by the Sol-Gel Process, Yamane et al., Journal of Non-Crystalline Solids 100 (1988), 506-510, North-Holland, Amsterdam.
r-GRIN TiO.sub.2 -SiO.sub.2 Glass Rods Prepared by a Sol-Gel Method, K. Shingyouchi and S. Konishi, Electronics Letters, 9th Oct. 1986, vol. 22, No. 21, pp. 1108-1110.
Haun Niels
Moore Duncan T.
Group Karl
Lukacher Martin
The University of Rochester
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