Fastness to migration

Incorporated in plasticized PVC, P.B.15, like other phthalocyanine pigments, is usually entirely fast to migration. Moreover, it provides excellent lightfastness. P.B.15 also finds use in various types of PUR foam materials as well as in rubber. Its redder and frequently cleaner shade compared to corresponding stabilized types makes it an equally useful pigment for other media. This applies especially for water-based systems. Textile printing, paper mass coloration, paper surface treatment, and paper pulp are areas of application as suitable for the use of P.B.15 as office articles, including colored pencils, blackboard chalks for schools, and water colors. 

Dimethylquinacridone is more weatherfast than most other unsubstituted types. It possesses excellent fastness to migration and outstanding heat stability. P.R.122 offers a very clean bluish shade of red, which is usually referred to as pink or magenta. Its main areas of application are in high grade paints, printing inks, and plastics, which is also true for the y-modification of unsubstituted quinacridone. 

Acylation of 1-aminoanthraquinone affords 1-acylaminoanthraquinones. The carbonamide function renders these compounds very fast to migration. The migration fastness may be improved further by introducing substituents which carry additional carbonamide groups, or by molecular dimerization using aromatic dichlorides. 

ISO 15701 1998 Leather - Tests for colour fastness — Colour fastness to migration into plasticized... 

The pigments have outstanding fastness to migration in plastics, and are readily dispersible. 

P.R. 176 affords a bluish red shade. This pigment exhibits excellent fastness to migration and light. It is primarily used in plastics (e.g. PVC, polyolefins, polyacrylonitrile) and in laminated papers. 

Similar observations apply to its coloristic and fastness properties in polymers. However, in plasticized PVC it has the advantage of being almost entirely fast to migration. Like Pigment Violet 23 it dissolves to some extent in polymers therefore much of its heat stability is lost as the white pigment concentration in a system is increased. 

Fastness to Light (1/3 SD GPPS) 8 (8=best fastness to light) Fastness to weathering (PS) 5 Fastness to Migration (PS) +... 

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