Shin-Etsu

KY-1200

SHIN-ETSU SUBELYN®
Fluorinated Anti-smudge Additives
KY-1200 Series

KY-1200 Series are UV/EB curable fluorinated compounds. When small amounts of KY-1200 Series are added to UV/EB curable hard coatings, surface properties such as water/oil repellency and anti-smudge effect can be added or enhanced.

Features of KY-1200 Series

Anti-smudge
A smooth fluorinated layer is formed on the surface and prevents stains with dirt.
Removability of fingerprint
Persistent fingerprint can be removed easily by wiping.
Water and Oil repellency
Repels water/oil and keeps substances clean.
Low dynamic friction
Low friction makes wiping off easy and protects surfaces from scratches.
Durability against scratches
Protects surfaces from scratches.
Low refractive index
Low refractive layer is formed when increasing the amount of the contents.
It can be used for Low Refractive (LR) materials.

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Functioning mechanism of anti-smudge additives

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Marker ink repellency test illustrates the effect of the coating

Control

KY-1203 addition coating

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Properties

for Acrylic hard coating

Lineup

Item KY-1203 KY-1211 KY-1207
Features Standard, high waterand-oil repellency, low dynamic friction Improves compatibility with acrylic hard coatings Improves anti-smudge and abrasion durability
Appearance Transparent to pale yellow Transparent to pale yellow Transparent to pale yellow
Viscosity at 25ºC 1.2mm2/s 1.0mm2/s 0.9mm2/s
Specific gravity at 25ºC 0.88 0.88 0.89
Solid content 20wt% 20wt% 20wt%
Solvent MEK、MIBK* MEK MEK
* We also have a product using only MEK. (Values not specified)

Properties (Hard coated surface)

Item No addition KY-1203 KY-1211 KY-1207
Water contact angle 59° 114° 110° 111°
Oleic acid contact angle 22° 73° 70° 73°
Oleic acid sliding angle Not measurable
Dynamic friction coefficient 0.60 0.10 0.12 0.09
(Values not specified)

Application example (1wt% addition based on solid) * When adding KY-1203

Hard coating:
EBECRYL 40 (DAICEL-CYTEC) ……………………………100 parts
Thinner:
2-propanol ……………………………………………………………142 parts
Initiator:
IRGACURE 184 (BASF)……………………………………………… 3 parts
Additive:
KY-1203…………………………………………………………………5 parts
Substrate:
Polycarbonate panel
Coating:
Spin coating: 500 rpm/10 sec + 3,000 rpm/ 20 sec
Preliminary drying:
80ºC / 1min
Curing apparatus:
UV light (metal halide lamp) conveyor system
Irradiation:

N2 atmosphere, lamp capacity 80 W/cm, accumulated power 1,600 mJ/cm2

Operating information

  • Hazy mixture may depend on choice or mixing ratio of hard coating and thinner.
  • By adding KY-1200 Series, curing speed of hard coating may change.
    In case of insufficient cure, modify curing conditions.
  • The effect of the coating with KY-1200 Series may change depending on curing atmospheres even if they have the same components. We recommend to irradiate with UV light under the inert gas atmosphere for the best result.
  • KY-1200 Series easily dissolves in ketone-based, ether-based, ester-based and fluorine-based solvent but doesn’t dissolve easily in hydrocarbon-based solvents and alcohol-based solvents.
  • It may change compatibility and stability depending on mixing ratio of hard coating.
    Please test under your conditions.

for Epoxy hard coating

Lineup

Item KY-1271
Appearance Transparent to pale yellow
Viscosity at 25ºC 0.8mm2/s
Specific gravity at 25ºC 0.88
Solid content 20wt%
Solvent MEK
(Values not specified)

Properties (Hard coated surface)

Item No addition KY-1271
Water contact angle 76° 110°
Oleic acid contact angle 28° 70°
Oleic acid sliding angle Not measurable
Marker ink repellency ×
* Measure after 30 min of UV irradiation (Values not specified)

Application example (1 wt% addition based on solid)

Hard coating:
ZX-1059 (NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD.) ………100parts
Thinner:
Butyl acetate ……………………………………………………145parts
Initiator:
CPI-210S (San-Apro Ltd.) ………………………………………0.5parts
Additive:
KY-1271 …………………………………………………………… 5parts
Substrate:
polycarbonate panel
Coating:
spin coating; 500 rpm/10 sec + 3,000 rpm/20 sec
Preliminary drying:
80ºC / 1min
Curing apparatus:
UV light (metal halide lamp) conveyor system
Irradiation:

N2 atmosphere, lamp capacity 80 W/cm, accumulated power 1,600 mJ/cm2

Operating information

  • Hazy mixture may depend on choice or mixing ratio of hard coating and thinner.
  • By adding KY1271, curing speed of hard coating may change.
  • Regarding the curing speed, photocation-cure is slower than photoradical-cure, it may take more time to express an effect of the coating with KY-1271 in comparison with other additives for acrylic hard coatings.
  • For the best result it is important to promote curing reaction on the surface as much as possible. It requires consideration of curing atmospheres, initiators, accumulated power and so on.

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Application process

Application process

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Applications

When small amount of KY-1203 is mixed with UV/EB curable compound, fluorinated chains are distributed on the outer surface, then anti-smudge, water/oil repellency, fingerprint removability and low dynamic friction are realized.

  • Hardcoated film
  • Anti-reflective film
  • Displays
  • Touch panel
  • Electronic device housing
  • Decorative film

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Operational Infomation

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