Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1991-03-11
1992-09-08
Schor, Kenneth M.
Glass manufacturing
Processes
Forming product or preform from molten glass
65 182, 65DIG16, C03C 2502
Patent
active
051455080
ABSTRACT:
A method for preparing a homogenous fluoride glass containing high purity BaF.sub.2 through the CVD process using a gaseous mixture containing a barium .beta.-diketonate complex service as a first starting material and represented by the following general formula (1) of: ##STR1## where (i) R and R' are each --C(CH.sub.3).sub.3 ; or (ii) R is CH.sub.2 CH.sub.2 CH.sub.3 and R' is --C(CH.sub.3).sub.3 ; or (iii) R and R' are each CF.sub.3 ;
a gaseous or vaporizable compound of the metallic element constituting said fluoride glass, the gaseous or vaporizable compound serving as a second starting material; and a fluorine-containing gas serving as fluorinating agent. Further provided is a process for preparing a perform for a fluoride optical fiber which is low in transmission loss, by depositing the fluoride glass over the interior wall of a cylindrical tube or the wall of rod-like glass substrate through the CVD process following by collapsing.
REFERENCES:
patent: 4378987 (1983-04-01), Miller et al.
patent: 4711652 (1987-12-01), Roba et al.
patent: 4718929 (1988-01-01), Power et al.
Seiko Mitachi et al, "Preparation of Low Loss Fluoride Glass Fibers", Japanese Journal of Applied Physics, vol. 21, No. 1, pp. L55-L56 (1982).
C. Jacoboni et al, "Vapor Deposition of Fluoride Glasses", Materials Science Forum, 1987, vols. 19-20, pp. 253-258.
K. Fujiura et al, "Organometallic Chemical Vapor Deposition of ZrF4-Based Fluoride Glasses", Japanese Journal of Applied Physics, 1989, vol. 28, No. 1, pp. L147-L149.
Fujiki Michiya
Fujiura Kazuo
Kanamori Terutoshi
Ohishi Yasutake
Takahashi Shiro
Bruckner John J.
Nippon Telegraph and Telephone Corporation
Schor Kenneth M.
LandOfFree
Method of making fluoride glass using barium .beta.-diketones does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of making fluoride glass using barium .beta.-diketones, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making fluoride glass using barium .beta.-diketones will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-131738