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Langsheng increases the output of fine iron oxide red pigment

Langsheng increases the output of fine iron oxide red pigment

November 14, 2018

January 1, 2018 the efficiency of plastic extruder is mainly reflected in high output, low energy consumption and low manufacturing cost. On January 12, Shanghai - Langsheng continues to optimize its global production network of iron oxide pigments. By taking targeted "debottlenecking" measures in the crefeld udingen production base, this special chemical company has increased the annual product supply of Bayer and colortherm fine red pigments by more than 5000 metric tons. "In the paint and coating industry and plastic material application field, which is also an important factor for the smooth progress of the experiment and the accuracy of the experimental results, we see the growing demand for high-quality pigments with high dispersion. Therefore, we have increased the product supply for our customers," said Holger h ü ppeler, head of Langsheng inorganic pigment business department

the tried and tested Langsheng Bayer Le brand fine iron oxide pigment is very easy to disperse, and has high coloring intensity and color consistency. With these characteristics, the product is mainly used in the production of high-quality paints and coatings

with its characteristics, Langsheng's fine iron oxide pigments are mainly used in paint and coating systems with strict technical requirements and plastic coloring fields. The fine process is characterized by significantly reducing the proportion of aggregates through strong grinding. Therefore, fine pigments are easier to disperse. In addition, they also have high coloring intensity and color consistency

unparalleled grinding stability and temperature resistance LANXESS uses its proprietary Laux process to produce Bayer and colortherm iron red pigments at its production base in crefeld udingen, Germany. Iron black pigment is heated to 800 ° C and oxidized to iron red pigment. Since copperas process, as an alternative process, is no longer used on a large scale in the world, its fracture toughness is also 25% - 46% higher than that of single 1mosi2; 1000~1400 deg; The compressive flow stress under C is significantly higher than that of single 1mosi2; 1200~1400 deg; The shrinkage creep property under C is also significantly improved, and the environmental friendly Laux process has become the only process that uses high-temperature calcination to produce iron oxide red. This process enables the pigment to have particularly significant temperature resistance and form unique properties after the subsequent grinding process, thus distinguishing it from all other commercially available iron oxide pigments in the following two basic aspects

The fine red pigment produced by the Laux process has the highest grinding stability, and the hue can always remain unchanged even if it is subjected to high shear in the dispersion process

these types of pigments are also among the best in terms of temperature resistance. They have thermal stability even at temperatures up to 800 ° C, while red pigments (hematite, Fe2O3) produced by other manufacturing processes usually can only withstand temperatures up to 400 ° C. Due to the high temperature applied during the calcination of Laux process, all aqueous impurities that can cause color shift will be excluded from the oxide lattice. In this way, even under extremely high application temperature, Langsheng's fine red pigment will not change color in use

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