SAKAI CHEMICAL INDUSTRY CO., LTD.

PRODUCT & SERVICE

COSMETIC RAW MATERIALS

Sunscreen and skincare products utilizing the newest nanotechnology contribute to health and
beauty.

Thanks to our long-standing, ultrafine, high-purity and shape-control technology, our Titanium dioxide, barium, and zinc oxide products are used to develop UV-blocking, easy spreading foundations, sunscreen products, and skincare products.

PRODUCT LIST

Titanium Dioxide

■Overview

Titanium dioxide is used in sunscreen and skincare products for its dual functions of excellent UV-B shielding and transparency.

Microfine Titanium Dioxide STR Series (Powder)

Provides effective shielding from UV-B rays while maintaining high transparency. Surface activity is successfully suppressed thanks to precise surface treatments.

Grade

Features Product Name Primary particle size(nm) INCI name
Non-coated grade STR-100N 15 Titanium dioxide
Standard STR-100A-LP 15 Titanium dioxide
Hydrated sillica
Aluminum hydroxide
Hydrogen dimethicone
STR-100C-LP 15 Titanium dioxide
Aluminum hydroxide
Hydrogen dimethicone
STR-100W-LP 15 Titanium dioxide
Hydrated sillica
Hydrogen dimethicone
Fatty acid-treated grade STR-100C-LF 15 Titanium dioxide
Aluminum hydroxide
Stearic acid
Texture-modified grade STR-100W-OTS 15 Titanium dioxide
Hydrated sillica
Triethoxycaprylysilane
Hydrophilic grade STR-100W 15 Titanium dioxide
Hydrated sillica
STR-100C 15 Titanium dioxide
Aluminum hydroxide
High-Transparency grade STR-100C-OTS
(Prototype)
15 Titanium dioxide
Aluminum hydroxidel
Triethoxycaprylysilane

■STR Series Electron Microscope View and Optical Properties

Different particle sizes demonstrate different properties. For example, STR-40 products offer high UV-A shielding, while STR-100 products offer high transparency.

【STR-100A-LP TEMimage】

Titanium dioxide is densely coated.

【Optical characteristics of STR series】

Microfine Titanium dioxide Dispersion DIS Series

■Overview

Microfine Titanium dioxide STR Series (Liquid Dispersion)

Grade

Product Name Dispersoid(Powder)
composition(wt%)
Dispersion medium Powder grade Primary particle size(nm) Features and Applications
Water-Based TiO₂ Dispersion
DIS-AB-10W 50 Water STR-100W-LP 15 High SPF、Good feel
O/W Wlayersorientation
Cyclopentasiloxane-Based TiO₂ Dispersion
DIS-11A 40 Cyclopentasiloxane STR-100A-LP 15 Standard
W/O Olayersorientation
DIS-12C 45 STR-100C-LP 15 W/O Olayersorientation
Ester Oil-Based TiO₂ Dispersion
DIS-OP-10A 50 Ethlhexyl palmitate STR-100A-LP 15 High passivity
O/W Olayersorientation
DIS-TL-10A 50 Isotridecyl isononanoate STR-100A-LP 15 High passivity
O/W Olayersorientation

Inquiries

Cosmetic Innovation Department
TEL +81-3-5823-3725

Zinc Oxide

■Overview

Zinc oxide is used in sunscreen and skincare products for its dual functions of excellent UV-A shielding and transparency.

Ultrafine Zinc Dioxide FINEX Series (Powder)

Provides effective shielding from UV-A rays while maintaining high transparency.

Grade

Features Product Name Primary particle size(nm) INCI name
Non-coated grade FINEX-50 20 Zinc oxide
FINEX-30 35
FINEX-10(Prototype) 90
Standard FINEX-50LP 20 Zinc oxide
Hydrogen dimethicone
High-transparency grade FINEX-50S-LP2 20 Zinc oxide
Hydrogen dimethicone
FINEX-30S-LP2 35 Zinc oxide
Hydrogen dimethicone
Low-viscosity grade FINEX-30S-LPT 35 Zinc oxide
Hydrogen dimethicone
Passivated grade FINEX-52W-LP2 20 Zinc oxide
Hydrated sillica
Hydrogen dimethicone
FINEX-33W-LP2 35 Zinc oxide
Hydrated sillica
Hydrogen dimethicone
High-Transparency, Easy-Dispersion Grade FINEX-50-OTS 20 Zinc oxide
Triethoxycaprylysilane
FINEX-30-OTS 35 Zinc oxide
Triethoxycaprylysilane

■Optical characteristics of FINEX Series

Characteristics vary based on the particle size.FINEX-25 has high UVA shielding performance,and FINEX-50 has high transparency.

【FINEX-52W-LP2 TEM image】

Zinc oxide is densely coated by a sillica layer.

【Total light transmittance】

■Applied Film Images of the FINEX Series

■High-Density Silica Coating (Inactive Grade)

Higher silica processing volume provides stronger suppression of photocatalytic activity.

high-density sillica coating

Differences in Reactivity by Silica Treatment (Discoloration in Petrolatum)

Ultrafine Zinc oxide Dispersion DIF Series

■Overview

A liquid dispersion of the Ultrafine Zinc Oxide FINEX series.

Grade

Product Name Dispersoid(Powder)
composition(wt%)
Dispersion medium Powder grade Primary particle size(nm) Features and Applications
Water-Based ZnO Dispersion
DIF-AB-33W 60 Water FINEX-33W-LP2 35 High transparency、Good feel
O/W Wlayersorientation
DIF-AB-3CS
(Prototype)
60 FINEX-30-OTS
(Prototype)
35
Cyclopentasiloxane-Based ZnO Dispersion
DIF-3ST2 50 Cyclopentasiloxane FINEX-30S-LPT 35 Standard
W/O Olayersorientation
DIF-AW4 50 FINEX-52W-LP2 20 High transparency
W/O Olayersorientation
DIF-3W4 60 FINEX-33W-LP2 35 High UV shielding
W/O Olayersorientation
DIF-5CS 50 FINEX-50-OTS 20 Good feel
W/O Olayersorientation
Ester Oil-Based ZnO Dispersion
DIF-OP-3W 70 Ethlhexyl palmitate FINEX-33W-LP2 35 High passivity
O/W Olayersorientation
DIF-TL-3W 70 Isotridecyl isononanoate FINEX-33W-LP2 35 High passivity
O/W Olayersorientation

Hexagonal Flake-shaped Zinc oxide XZ Series

■Overview

Hexagonal flake zinc oxide is available in different particle sizes to match a wide range of sun care and cosmetic product applications.

Grade

Product Name Particle size(nm) Thickness(nm) INCI name Features and Applications
XZ-100F-LP 100 30 Zinc oxide
Hydrogen dimethicone
High UV shielding effect.
XZ-300F-LP 300 100 Zinc oxide
Hydrogen dimethicone
Booster effect to increase SPF
Can be also used as a white pigment.
XZ-1000F-LP 1000 290 Zinc oxide
Hydrogen dimethicone
Good skin feel and the ability to produce optimal whiteness enable it to be substituted for pigment-grade titanium dioxide.
XZ-1000FST 1000 80 Zinc oxide The thinning has improved UV shielding ability and feel.

*Non-coated items also included in lineup

Inquiries

Cosmetic Innovation Department
TEL +81-3-5823-3725

Flake-shaped barium sulfate

Flake-shaped barium sulfate H series

Grade

Product Name Particle size(μm) INCI name Characteristics
H 7 Barium sulfate Offers matte finish.
HM 10 Barium sulfate Good balance of matte and luster finish.
HL 15 Barium sulfate Offers more luster than HM.
HG 20 Barium sulfate The grade with the most shiny luster finish.
H-LF 7 Barium sulfate
Coconut Fatty Acids
Magnesium hydroxide
Matte finish with good smoothness.RSPO-certified grade
H-LFM 7 Barium sulfate
Magnesium myristate
Matte finish with good smoothness.
HG-LFP 20 Barium sulfate
Magnesium hydroxide
Palmitic acid
Luster finish with good smoothness.

*Coated items also included in lineup

■TEM Images

Flake-shaped barium sulfate H

■Long-Lasting Soft Focus Effect of H-LFM Lamellar Barium Sulfate

Lamellar Barium sulfate has a higher soft-focus effect than mica and has proven effective for long-lasting makeup applications.

《Evaluation Method》

First, after face washing, apply skin lotion and milky lotion and allow them to soak in for 15 minutes. Next, apply an appropriate quantity of powder foundation, and quantify the number of spots and pores using a VISIA skin analyzer.

■Comparative data of flake-shaped barium sulfate and other materials

The soft effect of flake-shaped barium sulfate is higher than with other materials.

《Measurement conditions》

0.2g of sample + 0.8g of silicone(PWC = 20 wt%) were dispersed twice with 25 turns at 100 pounds in a Hoover muller,applied to a glass plate with a 1mil applicator,and measured in a haze meter.

Inquiries

Cosmetic Innovation Department
TEL +81-3-5823-3725

Microplastic-Free Bead Alternatives:Spherical Calcium Carbonate & Spherical Barium Sulfate

■Overview

It imparts a light, smooth feel and excellent soft-focus performance thanks to its spherical particle shape. A substitute material for polymer beads.

Spherical Calcium Carbonate Calmaru

Grade

Product Name Particle size(μm) INCI name Oil absorption Features
Calmaru SCS-M5 5 Calcium carbonate
Sodium metaphosphate
42 ㎖/100g(IPM) Offers both excellent soft foucus effect and a high level of press moldability.
Calmaru-AM 5 Calcium carbonate
Sodium
Nametaphosphate
Sodium Cocoyl Glutamate
32 ㎖/100g(IPM) Surface treatment provides water repellency

Spherical Barium Sulfate Barimaru

Grade

Product Name Particle size(μm) INCI name Oil absorption Features
Barimaru 5 Barium sulfate Silica 25 ㎖/100g(IPM) Offers both excellent soft foucus effect and a high level of press moldability
Barimaru-LF 5 Barium sulfate
Silica
Stearic Acid
Surface treatment provides water repellency

■TEM Images

Calmaru

Barimaru

■Drop test of molded compound

Barimaru-LF and Calmaru is spherical powder with high press moldability.

《Methods of measurement》

Samples (10g) were placed in a vessel and molded by pressing at 2 MPa for 30 sec.
The molded compounds were dropped from a height of 10 cm, and the number of cycles until breakage was recorded.

■Soft focus effect

《Method for Haze values》

・Sample : Dispersed in dimethicone (10,000 cPs) with Planetary centrifugal mixer (2000rpm, 3min)
・Standard: Barimaru 10wt% (This volume fraction was used to evaluate.)
・Film thickness: wet 25.4μm Comparative powder is adjusted to have the same volume ratio as in the Barimaru evaluation.

Applying powder to artificial skin (spot type) and observing the effect of blurring the spots

Unprecedented high soft-focus property

■W/O sunscreen for SPF boosting effect test

《Method of measurement》

In Vitro SPF values are measured with the SPF analyzer.
Samples are applied to PMMA plates with 2mg/㎠.

Barimaru-LF and Calmaru-AM enhance In Vitro SPF values.

■Long lasting effect

《Method of measurement》

Mix 1.8g of sample mixed with 0.9g of artificial sebum. Then, visually check the color change.
Artificial sebum ⇒ oleic acid : squalene : olive oil = 1:2:2

Compared to other spherical powders, Barimaru and Calmaru have a smooth texture even after being mixed with artificial sebum. They keep their whiteness in oil.

Keep the whiteness even after sebum absorption

Inquiries

Cosmetic Innovation Department
TEL +81-3-5823-3725

Cosmetic Inorganic Fluorescent Materials

Cosmetic Inorganic Fluorescent Materials Lumate® Series

Characteristics

◯Absorbs harmful UV rays,transforming them to visible light to shine.

◯Composed of elements used in cosmetic materials.

◯Green (Lumate®G) corrects reddish hues,red (Lumate®R) gives skin a healthy look,and blue (Lumate®B) gives it a translucent look.

◯Various shining colors including white can be produced by combining the three Lumate products.

◯Lumate®G(Particle size 2.5μm)

INCI name:Zinc oxide

【SEM image】

【Emission / excitation spectra】

【Particle size distribution】

◯Lumate®R(Particle size 3.0μm)

INCI name:Magnesium / Manganese / Titanium Oxide

【SEM image】

【Emission / excitation spectra】

【Particle size distribution】

◯Lumate®B(Particle size 8.0μm)

INCI name:Calcium Cerium Phosphate

【SEM image】

【Emission / excitation spectra】

【Particle size distribution】

Inquiries

Cosmetic Innovation Department
TEL +81-3-5823-3725

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