Fast sol-gel preparation of glasses
US5272240A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1991 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | May 29, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D4/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a method of preparing glasses from metal alkoxides. Glasses are crack-free and prepared rapidly in a single step. Optically clear polysiloxane glasses as thin films may be prepared in a matter of minutes. A glow discharge curing method is disclosed which rapidly cures a wide range of condensation polymers, including polyamide resins and polymethylsiloxane glass films. Fracture-free films up to 100 .mu.m have been prepared. The glass films may be used as waveguides and to incorporate metals, donor-acceptor molecules and dyes. Stable, crack-free multiple-layered films may be prepared by the disclosed method which can be modified according to desired properties of the glasses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.