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Product Description – PB15:4

HP BLUE 4558 (PIGMENT BLUE 15:4) shows largely the same coloristic and fastness properties as P.B.15:3 types, but often exhibit much better rheology. As with stabilized Copper Phthalocyanine Blue types, stabilization through surface treatment has proven to decrease the solvent fastness of Copper Phthalocyanine Blue, sometimes considerably so, making the pigment more sensitive to aromatics, alcohols, ethylene glycol, and ketones. It also gained importance in gravure printing inks, particularly in toluene based publication gravure printing inks and in various types of flexographic printing inks. They now dominate in these areas. It is optimized for use in specific media, such as publication gravure printing inks. In these media the pigment exhibits high tinctorial strength and good flow.

Recommended Application：

Coatings: solvent based coatings, water based coatings, industrial coatings, powder coatings, wood coatings
Printing inks: offset inks, solvent based inks, water based inks

Technical Data:

• Light fastness: Light fastness rating is assessed on 1 to 8 Blue Wool scale where 1 = ‘Poor’ and 8 = ‘Excellent’.
• Heat Stability : Heat stability values given indicate the maximum temperature at which the pigment can be stoved for 10 min. on the full shade and in reductions without undergoing any significant change in shade.
• Oil absorption: The oil absorption is determined on the basis of EN ISO 787-5 and given in g linseed oil per 100 gm. pigment.
• Solvent bleeding: The bleeding in solvents is tested using the powder grades and the visual rating given on 1 to 5 Grey scale
  where 1 = ‘Heavy bleeding’ and 5 = ‘No bleeding”

Disclaimer – The information given in this data sheet is based on the present state of our knowledge & is intended as a general description of our products & their possible applications. Due to the multitude of formulations, production & application conditions, all the above mentioned data have to be adjusted to the circumstances of the processor. No liabilities, including those for patent rights, can be derived from this fact for individual cases. It cannot be ruled out that this product contains particles < 0.1 μm. Any user of this product is responsible for determining the suitability of Sudarshan’s products for its particular application & to ensure that any proprietary rights & existing laws & legislation are observed.