FORSCHER SOLUTIONS PROVIDER

 
 


 

Products

 

   

Pigments

           Organics  
           Inorganics  
           Specials  
                 Photochromics  
                 Thermochromics  
                 Fragrance  
                 Fluorescents  
                 Luminescents  
           Effects  

    

Additives

 

    

New Technologies

 

    

Equipments

 

    

Preparations

 

    

Combat against counterfeiting and piracy

 
...

 

 

.

 

...
Forscher - forscher@forscher.com.br  - Phone: 55 (11) 3746-1616  - Fax: 55 (11) 3772-5748

Photochromic Pigments


I.
Brief Introduction


Photochromic dyestuffs are substances exhibit phenomenon of reversible color change, witch are induced by UV-Light. The color reveals when it is exposed to sunlight/ UV-Light and lose this light activated coloration when the light source is removed. The color strength depends on the sunlight / UV.Light.


 

II. Products

A) Direct Mixing of basic colors

By the primary colors, you can create new colors as your expectation. It could be colorless to color.

Shade Color Base Dyestuffs Microcapsule PS Powder PE Masterbatch PMMA Masterbatch
  Amarelo YL - 10 YL - 10ºC YL - 10S YL - 10E YL - 10A
  Laranja OL - 20 OL - 20ºC OL - 20S OL - 20E OL - 20A
  Vermelho RL -30 RL - 30ºC RL - 30S RL - 30E RL - 30A
  Azul BL - 60 BL - 60ºC BL - 60S BL - 60E BL - 60A
  Violeta VL - 70 VL - 70ºC VL - 70S VL - 70E VL - 70A

 B) Coat Mixing Of Created/Basic colors

The color can be from one to another by mixing photochromic colorants and regular solvent dyestuffs.

III. Application

The photochromic dyes have generally been used in paints, inks, dyes and dyes fabrics etc. Finished products could be Doll hair, toy products, sunglasses, lunch, boxes, crayons, elly shoes, hair clips, hair combs, shoestrings, coasters, craft beads, PVC belts, watch bands, drinking straws, spoons, cups, Frisbees, combs, greetings cards, stickers, business cards, UV detection devices, T- Shirts, security, badges, garments of all sorts, nail polish and so on.

IV. Product Characteristics

A) Photochromic Dyestuffs

1.
The photochromic dye can be dissolved in various organic solvents such as toluene, xylene, methyl ethyl ketone, Ethyl acetate etc.

 2.
By mixing the primary colors, a color can be matched to show colorless or light color to color. And also can mix with other regular dyes to have the effect of color to color.

3.
Heat resistance of photochromic dyestuffs is different. YL-10 at 240ºC, RL-30 at 222ºC, BL-60 at 256ºC and VL-70 at 236ºC.

B)
Photochromic Microcapsule powder (C-Series)

1.
Photochromic microcapsule powder is mode from photochromic dyes and some additives, which is applied as a pigment.

2.
It is safe and stable in its color change function for a long period of time.

3.
Distribution of particle size is between 1~10 micrometer and heat resistance is at 230ºC.

4.
It is easy to disperse and compatible with regular pigments.

C)
Photochromic PS powder (S-Series)

1.
Photochromic PS powder is made from 1.5% photochromic dye and 98,5% PS resin by extrusion process.Then mill it to be very fine powders, which is about 8~15.

2.
The water content is below 0,5% and the heat resistant is at 140ºC.

D) Photochromic Masterbatch  (E-Series/A-Series)

1.
Photochromic masterbatches (PE/PMMA) are mede from 1% photochromic dyes 99% of copounds, special photo-stabilizers and antioxidants.

2.
Our PE photochromic masterbatch can be applied in PE, PP, TPR and EVA etc.

3.
PMMA photochromic masterbatch especially apply to PMMA.

5. Application & Formulation

A) Some of the products are FDA approved. There is no harmfulness to body health. Fit the requirements for the demands of safety toys and the food package standards.

B)
The products must be stored at room temperature, in dry area and not exposed to sun. The shelf life is one year.

C)
Different solvents and materials will affect the change in color of the products.

D)
The ability of reverse might be fatigued if exposed to UV light, acid condition, wet and radiation for a long time.

E)
When colorants are applied for screen printing, 80~150 mesh is recommended.

F)
The best ink basic materials are PU/Acrylic resin.

G)
Dosage of application

Materials

Tintas/ Tintas de
impressão – solvente
Tintas/ Tintas de
impressão – aquosa

Plasticos
Injeção - Extrusão

Application Advise
Addition
Application Advise
Addition
Application Advise
Addition
Photochromic
Dyes
0,020,1% X - 0,01 - 0,1%
Photochromic
Pigment
3,0 - 30% 3,0 - 30% 0,2 - 5,0
Photochromic
Masterbatch
- X - 1,0 - 5,0