Dyestuffs,Intermediates,Optical Whitener,U ltramarine Blue & Other Pigments.Ultramarine Pigments maintain the dimensional stability of polyolefins and other polymers so that warping and shrinking do not take place.Compatible and suitable for all kind of polymers, from polyolefins to engineering polymers, including rubber as well.Ultramarine Blue is not only used to provide a reddish blue shade or to whiten polymers, but also to provide a blue undertone to grey and black plastic parts.Ultramarine Violet might be even more adequate than Ultramarine Blue to reduce the yellowish tendency of some resins and to provide a brightener white.Optical Whitening Agent for Paper, Textile & Detergent Industry.