Лако-красочные материалы — производство

The specific surface area of industrial carbon black varies widely. While coarse ther­mal blacks have specific surface areas as small as 8 m2 g-1, the finest pigment grades can have specific surface areas as large as 1000 m2 g-1. The specific surface area of carbon blacks used as reinforcing fillers in tire treads lies between […]

4.1.1 Morphology Electron micrographs show that the primary particles of carbon black are almost spherical in shape. In general, a larger number of such primary particles build aggregates in the form of chains or clusters. In practice, the degree of aggregation is called the “structure” of carbon black. These aggregates tend to agglomerate. The mean […]

Carbon black [1333-86-4] is virtually pure elemental carbon (diamond and graphite are other forms of nearly pure carbon) in the form of near-spherical colloidal particles that are produced by incomplete combustion or thermal decomposition of gaseous or liquid hydrocarbons. Its physical appearance is that of a black, finely divided pellet or powder, the latter sometimes […]

Iron blue pigment compounds show no toxicity in animal studies, therefore they are not expected to cause any adverse effects on human health. No toxic effects were reported in humans when iron blue pigment compounds were used experimentally or therapeutically. Toxico-kinetic studies showed, that the adsorption of iron blue pigments is very low. Following intravenous […]

Iron blue has become important as an agent for decontaminating persons or animals having ingested radioactive material. The isotope 137Cs, which would otherwise be freely absorbed via the human or animal digestive tract, exchanges with the iron(II) of the iron blue [3.192], [3.193] and is then excreted into the feces [3.194]. Gelatin capsules containing 500 […]

Iron blue pigments are used in the paint industry, e. g. for full, dark blue colors for automotive finishes. A full shade with good hiding power is produced by 4-8% iron blue pigments. 3.6.4.1 Paper Adding “water-soluble” iron blue pigment directly to the aqueous phase can produce blue paper. Alternatively, a suitable iron blue pigment […]

Since ca. 1935, and especially in Mediterranean countries, blue inorganic fungicides based on copper and mostly used for treating vines, olives or citrus fruits have largely been replaced by colorless organic compounds. Micronized iron blue pigments are used to color these fungicides (normally at a concentration of 3-6 wt.%), so that even small amounts become […]

Iron blue pigments are important in printing, especially rotogravure, because of their deep hue, good hiding power and economic cost/performance-basis. Iron blue is of­ten mixed with phthalocyanine pigments for multicolor printing. Another important use is in controlling the shade of black printing inks. Typical amounts used are 5-8% for full shade rotogravure inks and 2-8% […]

Total production of iron blue in 1975 was ca. 25,000 t a-1, but in 1995 it was only ca. 15,000 t a-1. A value of 9000 t a-1 was estimated for 2002. The main consumer Tab. 3.6: Physical and chemical properties of iron blue pigments (Vossen Blau® and Manox® Blue Manox® Blue grades). Type VOSSEN […]

Hue, relative tinting strength, dispersibility, and rheological behavior are the prop­erties of iron blue pigments with the most practical significance. Other important properties are the volatiles content at 100 °C, the water-soluble fraction, and acidity (ISO 2495). Pure blue pigments are mostly used in their pure form (e. g. in print­ing inks) and do not […]