Tayca Corporation
Okayama Research Laboratory

High transparent micro titanium dioxide slurry (HTD Series) technical sheet

Refractive index regulator for optical film
Features

Refractive index of coating film
including HTD Series(Refractive index: 2.72)

Refractive index regulator for wet
coating
Excellent transparency, low haze
Base material particle characteristics(micro titanium dioxide)
Appeaance

White powder

Relation between pigment concentration of Coating film
コ－ティング膜の顔料濃度と屈折率
and refractive index
ResinHTD-760Ｔ
樹脂
試作760Ｔ
2

Refractive
屈折率index（ｎ） (n)High refractive index material

1.9(toluene type Slurry)

37.5 - 112.5 g (P/B=1-3)(pigment: 15.0 - 45.0 g)

25.5 g (Solid: 12.8 g)
BECKOLITE M-6401-50 (solid 50%)
SUPER BECKAMINE J-820-60 (solid 60%) 3.7 g (Solid: 2.2 g)(Made by DIC Corporation)

1.7

Dilution (you can dilute according to application)

Disper: 1,000 rpm for 1 minute

Solvent: Toluene
In the case of Spin coat resin concentration is diluted to 1.5%

1.6

Refractive index

2.72

1.5

Specific gravity

4.2

1.4

Crystal size*1

15 – 25 nm

Making Film

1.0

*1: X-ray diffraction analysis

Equipment : Spin Coater 1HDX2 made by Mikasa corporation)
Substrate :Micro Slide Glass ( n = 1.51 - 1.54)
made by Matsunami Glass Corporation
Condition : 3000 rpm-3 sec-Slope 7 sec(Film thickness : 0.1 μm)
Setting : 5min, Drying : 140°C - 30 min

3.0

Ｐ／Ｂ
P/B
（顔料／樹脂固形分比）(Solid ratio of Pigment and Resin)

Pigment grade titanium
dioxideSample name

100nm

HTD-760T

MixingRutile

100nm

Formulation

1.8

Titanium oxide
crystal structure

Micro titanium dioxide

Making method of coating film

P/B

Evaluation method of coating film

1.03.0HTD-760T

n = 1.72
Haze = 1.0%

n = 1.85
Haze = 1.3%

Resinn = 1.55

Equipment : DVA-FL3G automatic ellipsometer(made by Mizojiri Optical Corporation)
Condition:

He-Ne Laser( 632.8 nm)

Haze = 0.8%
09.09.01

Tayca Corporation
Okayama Research Laboratory

High transparent micro zinc oxide slurry HTD-711Z (IPA), 750Z (Toluene), 770Z (Ethyl acetate)
Appearance of Coating Film
(polyester / melamine system)

Excellent transparency
Excellent UV ray shielding
effectGood compatibility withvarious resins

HTD series

Transmittance curve(polyester / melamine system)

BLANK

10080
Transmittance (%)

FeaturesEasy to use in applications with highpigment concentrations

604020General characteristics

HTD-Series
BLANK0Appearance
Pigment

Zinc oxide

Pigment concentration(%)*2Formulation

Pigment
concentration

510100200

770Z: Ethyl acetate

Film thickness(μm)

40205240 - 50

Haze (%)

1.2

1.2

1.1

1.0

711Z: IPA

Residue on drying (%)

Wavelength/n m

Haze of Coating Film
(polyester / melamine system)

35-45*1Main solvents

250 300 350 400 450 500 550 600 650 700

Pale yellow liquid

750Z: Toluene

Crystal size (nm)20 - 30

Viscosity (mPa·s)< 50*1: Isopropyl alcohol*2: X-ray diffraction analysis
The figures shown are typical values and are not guaranteed.

100 PHR : pigment / resin (solid) = 100 / 100
HTD series(pigment content 40wt%)
37.5 g (pigment: 15.0 g)
BECKOLITE M-6401-50 (solid: 50wt%)※
25.5 g (pigment: 12.8 g)
SUPER BECKAMINE J-820-60 (solid: 60%)※ 3.7 g (pigment: 2.2 g)
Solveso 100 (solvent ) ※0.8 g※. made by DIC Corporation
Dispersing method
Disper: 2,000 rpm for 1 minute

The figures for haze show values after deductions forthe blank film haze.

Measurement
Coating film thickness : 5μm（bar coater #12, on PET film)
Blank: PET film only
Transmittance:250 – 700 nm( Hitachi UV-3000 spectral photometer.)

09.09.01