lithopone(b301 b311) supplier

In the meantime, the chemical factories of Continental Europe, principally in Germany, Austria and Belgium, had taken hold of the novelty and under the collective name of lithopone or lithophone, by numerous processes, produced various grades of the pigment, branding the respective qualities as red seal, green seal, yellow seal, blue seal, etc., or selling them under some fancy name. Of this we shall speak later on. The crusade against the use of white lead in the various countries of Continental Europe, assisted the manufacturers, to a very great extent, in marketing their products, not only to industrial concerns, as has been the case in this country, until recently, but to the general painting trade. Up to 1889 the imports into this country were comparatively small. At that time one of the largest concerns manufacturing oilcloth and linoleum in the State of New Jersey began to import and use Charlton white. Shortly after that other oilcloth manufacturers followed suit, replacing zinc white with lithopone in the making of white tablecloth, etc., and later on abandoning the use of white lead in floor cloth and linoleum. This gave an impetus to several chemical concerns, that erected plants and began to manufacture the pigment. Competition among the manufacturers and the activity of the importers induced other industries to experiment with lithopone, and the shade cloth makers, who formerly used white lead chiefly, are now among the largest consumers. Makers of India rubber goods, implement makers and paint manufacturers are also consumers of great quantities, and the demand is very much on the increase, as the nature of the pigment is becoming better understood and its defects brought under control. Large quantities find their way into floor paints, machinery paints, implement paints and enamel paints, while the flat wall paints that have of late come into such extensive use owe their existence to the use of lithopone in their makeup.

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Resumen–En este artículo se discute el descubrimiento del litopón fosforescente en dibujos a la acuarela por el artista americano John La Farge, fechados de 1890 a 1905, y la historia del litopón en la industria de los pigmentos a finales del Siglo XIX y principios del Siglo XX. A pesar de tener muchas cualidades deseables para su uso en pintura para acuarela o pinturas al óleo blancas, el desarrollo del litopón como pigmento para artistas fue obstaculizado por su tendencia a oscurecerse con la luz solar. Su disponibilidad para los artistas y su adopción por ellos sigue siendo poco clara, ya que por lo general los catálogos comerciales de los coloristas no eran explícitos al describir si los pigmentos blancos contenían litopón. Además, el litopón se puede confundir con blanco de plomo durante el examen visual, y su fosforescencia de corta duración puede ser fácilmente pasada por alto por el observador desinformado. A la fecha, el litopón fosforescente ha sido documentado solamente en otra obra mas: una acuarela por Van Gogh. Además de la historia de la fabricación del litopón, el artículo detalla el mecanismo para su fosforescencia, y su identificación con la ayuda de espectroscopía de Raman, y de espectrofluorimetría.

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  • Rutile titanium dioxideThis week, the domestic rutile titanium dioxide mainstream negotiation interval is stable, and the overall market center of gravity is up. As of the close of this week, the average price of the weekly rutile titanium dioxide national market assessment was 16,558 yuan/ton, up 288 yuan/ton from the average price last week, an increase of 1.77%, and the increase narrowed by 0.03 percentage points from last week. Within the week, the new single negotiation interval is still referred to 16000-17200 yuan/ton interval (different brands of rutile products). This week, the new single stable price of titanium dioxide factory, most of the early orders of the factory are sufficient, the downstream holiday one week before the festival, the new orders in the market are reduced, and the trading atmosphere is light.This week, the domestic industry started load of 76.92%, more stable than the previous period. Domestic manufacturers maintain normal production rhythm, industry output is relatively stable; From the inventory point of view, the mainstream factory inventory days are still less than 10-15 days, the mainstream manufacturers are in short supply, and the factories rush to deliver pre-holiday orders. In terms of orders, large manufacturers receive orders relatively better than small and medium-sized manufacturers.This week, some downstream stocks according to their own dosage, and the pace of transactions has slowed down. The holiday is approaching, some downstream have supplementary double section period just need to prepare goods, transaction link batch orders are less; In terms of external demand, according to Zhuo Chuang information, the price of new external demand also has some just need to order access, and the feedback of the production enterprise is that the current mainstream rutile titanium dioxide export new single transaction is more than reference in 2400-2500 US dollars/ton, and the quotation reference is more than 2500 US dollars/ton.
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