For centuries, the only painting materials used in stained-glass production were grisaille and yellow (silver) stain. At the end of the fifteenth century, stained-glass painters began to use a new ...

Sanguine Paint: Production, Characterization, and Adhesion to the Glass Substrate

Hydrothermal experiments have been carried out to find the equilibrium conditions for the reactions: 2kaolinite = pyrophyllite + 2diaspore + 2water (1) kaolinite + 2quartz = pyrophyllite + water (2) As starting materials, a natural mixture of kaolinite-pyrophyllite-boehmite was used for the experiments. Determination of reaction direction was based upon X-ray diffraction patterns. It has been confirmed that the equilibrium curve for the reaction (1) passes through the points 325 ± 10°C at 1kb and 330 ± 10°C at 2kb, and the curve for the reaction (2) passes through 250 ± 10°C at 1kb and 260 ± 10°C at 2kb. The present temperatures for the reaction (2) are lower than any other one reported so far

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Makoto Kurosaki

Papers

Equilibrium boundary between kaolinite and pyrophyllite