Disperse FS 300/300R/600R/800
Polyhydroxystearic Acid - Dispersing agents for inorganic sunscreens and color pigments

Product Name: Disperse FS 300/300R/600R/800
Product Category: Non-aqueous Dispersant 
INCI Name: Polyhydroxystearic Acid
Physical Form: Liquid
CAS. No: 27924-99-8

Dispersion Principle:
1. Lone pair of electrons on the hydroxyl group and the surface of the metal particles with strong binding, the molecular film is formed on the surface of the particles to resist aggregation.
2. Change the molecular weight


Main Features of Disperse FS 300/300R/600R/800
1. Lone pair of electrons on the hydroxyl group and the surface of the metal particles with strong binding, the molecular film is formed on the surface of the particles to resist aggregation.
2. Novel polymer, can stabilizes colorants and inorganic sunscreen particles
3. Can disperse untreated zinc oxide to Dipropylene glycol diacrylate (Dipropyleneglycol dibenzoate)
4. increase transparency
5. Low viscosity dispersion
6. Reduce grinding time
7. Increase the pigment (volume) loading
8. Increase dispersion stability

Sunscreen Dispersant - Increase Pigment Loading

TiO
ZnO
Solids (%)
Viscosity (mPa.S)
Solids (%)
Viscosity (mPa.S)
No Dispersant
25 Too thick to process
20 7300
With Disperse FS300/300R/600R/800
50 18000/8/1
65 800/3.4/1

Sunscreen Dispersant - Increase Transparency
Titanium dioxide
(without dispersant)

Titanium dioxide
(used FS 300/300R/600R/800 dispersing)

20% solids
20% solids



Make-up Dispersant
1. Reduce /lower dispersant viscosity
2. Increase pigment loading—make colors more vivid
3. Reduce grinding time
4. Increase dispersion stability
5. With higher chroma
6. Better UV absorbance—higher SPF value
7. increase transparency
8. Can disperse untreated zinc oxide to Dipropylene glycol diacrylate

Sunscreen dispersant - Increasing SPF Coefficient
Comparison of two similar formulas:
With Disperse FS 300/300R/600R/800
Without dispersant
Results:In this experiment, the formula with Disperse FS 300/ 300R/ 600R/800 can achieve double SPF value than the formula without disperse
Sunscreen without dispersant: SPF*= 12
Sunscreen with FS 300/300R/600R/800:  SPF*= 24
SPF* Analysis is based on Diffey method in vitro evaluation

  Products
  Contact us