Pigment

Phthalocyanine (PC) pigments constitute a broad class of pigments. PC Blue and PC green are among the most important organic pigments.

Copper phthalocyanine blue is the copper (II) complex of tetra aza tetra benzoporphine (CPC) whereas Phthalocyanine green is its chlorinated derivative (Pigment green 7). The brominated derivative of CPC provide a yellowish green shade(Pigment green 36).

The specific crystal modification decide the hue of the product as in Alpha blue - red shade copper Phthalocyanine (Pigment Blue 15) and in Beta blue - green shade blue (Pigment Blue 15:3). The Alpha modification which is phase stabilised by partial chlorination called solvent stable alpha blue or Pigment Blue15:1.

The Alpha modification which is stabilised towards flocculation and the phase change are registered as Pigment Blue 15:2. These pigments find use in paints.

The details of the individual class of pigments together with its application is given separately.

2, 9 Dimethyl Quinacridone offers a very clean bluish red shade with all the excellent properties and durability expected of high performance coloured pigment found in architectural / industrial coating, metallic paints, easy dispersing plastics, and cosmetics, crayon, etc.

Physico-Chemical Properties

Fastness to Reagents (On 1 to 5 scale)

Heat Fastness (in Paint) : on 1 to 5 scale

Stoving Paint 200 ^o C /5 min. : 5

Fastness to Light (on 1 to 8 scale)

Full shade :7- 8
1:40 reduction :7- 8

Industrial Applications

Linear trans Quinacridone with beta crystal modification offers a very clean strong red shade with cast violet hue found wide applications in printing inks, metallic paints, engineering plastics, industrial coating and cosmetics, crayons, textile fibres etc.

Physico-Chemical Properties

Fastness to Reagents (On 1 to 5 scale)

Heat Fastness: (on 1 to 5 scale)

Stoving paint 200 ^o C /5 min. : 5
Plastics 280 ^o C

Fastness to Light (on 1 to 8 scale)

Full shade : 7 - 8
1:40 reduction : 7 -8

Industrial Applications

2, 9 Dichloroquinacridone bluer in shade is an excellent choice for automotive and exterior paints due to its' superior transparency and light fastness.

Physico-Chemical Properties

Fastness to Reagents (On 1 to 5 scale)

Heat Fastness : on 1 to 5 scale

Stoving Paint 200 ^o C /5 min. : 5

Fastness to Light (on 1 to 8 scale)

Full shade :7- 8
1:40 reduction :7- 8

1,8 chloro quinacridone is the most yellowish-red shade pigment. It is highly transparent and as such is recommended for applications requiring superior transparency coupled with exceptional durability.

Physico-Chemical Properties

Fastness to Reagents (On 1 to 5 scale)

Heat Fastness : on 1 to 5 scale

Stoving Paint 200 ^o C /5 min. : 5

Fastness to Light (on 1 to 8 scale)

Full shade :7- 8
1:40 reduction :7- 8

Industrial Applications