SILCOLEASE® release coatings â¦using ... - Bluestar Silicones
SILCOLEASE® release coatings â¦using ... - Bluestar Silicones
SILCOLEASE® release coatings â¦using ... - Bluestar Silicones
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RADIATION_BLUESTAR_4_2010 12/8/10 10:18 AM Page 1<br />
Silcolease® UV curing systems offer a flexibility to<br />
coat filmic and other heat sensitive substrates that is not possible with<br />
thermal cure systems.<br />
Comparative energy costs are low compared to thermal systems and space taken by installation is<br />
small making UV an excellent option for narrow web converters and printers.<br />
The Silcolease® UV POLY 200 series is based on epoxy functional chemistry with a cationic curing mechanism.<br />
The major advantage of these products is their excellent cure response to UV C radiation due to the incorporation of<br />
<strong>Bluestar</strong> patented photoinitiator technology. This photoinitiator can be supplied as a catalyst to add to a base polymer, but<br />
a unique feature of Silcolease® UV POLY 200 series is the possibility to supply a monocomponent system ready to use<br />
without further bath formulation.<br />
A range of base polymers offers the flexibility for coating head and substrate variations, and <strong>release</strong> control additives are<br />
used to modify the <strong>release</strong> towards premium or tight values.<br />
Release control of Silcolease® UV POLY 200 series<br />
cationic cure systems<br />
UV POLY 200 base polymer on OPP film base<br />
Effect of additives to modify <strong>release</strong> values from medium <strong>release</strong><br />
base value<br />
UV RCA 200 effect - 4651 sbr adhesive<br />
UV RCA 200 effect - 7475 acrylic adhesive<br />
UV RCA 251 effect - 7475 acrylic adhesive<br />
UV lamp requirements for Silcolease® UV POLY 200 series<br />
cationic cure systems.<br />
UV–C Lamps emit the most suitable radiation wavelengths for<br />
absorption by <strong>Bluestar</strong> photoinitiator PC-702 when used in<br />
Silcolease® systems.<br />
To complete the radiation cure range the Silcolease® UV POLY 110 free radical curing series based on acrylate functional<br />
chemistry is used particularly where substrate inhibition of the cationic reaction is seen. Although free radical systems are<br />
obliged to use a nitrogen blanket to avoid cure inhibition from atmospheric oxygen, recent advances in inerting technologies<br />
allow faster speeds than were possible in the past.<br />
The Silcolease® UV POLY 110 range is complemented by non silicone based extenders and standard free radical<br />
p h o t o i n i t i a t o r s .<br />
Silcolease® is a registered trademark of <strong>Bluestar</strong> <strong>Silicones</strong>.<br />
<strong>Bluestar</strong> <strong>Silicones</strong>, USA Corp<br />
Two Tower Center Blvd - Suite 1601 - East Brunswick, NJ, 08816-1100 - USA - Tel. +1 866 474 6342 - Fax +1 732 249 7000 - www.bluestarsilicones.com<br />
SILCOLEASE® <strong>release</strong> <strong>coatings</strong><br />
…using science to a fine art<br />
Solventless Radiation<br />
cure range<br />
<strong>Bluestar</strong> <strong>Silicones</strong>. Delivering Your Potential.
RADIATION_BLUESTAR_4_2010 12/8/10 10:19 AM Page 3<br />
Epoxy chemistry with cationic<br />
curing mechanism<br />
Silcolease® Product Viscosity (mPa.s) Features<br />
Polymer UV POLY 200 350 • Epoxy base polymer<br />
• Medium <strong>release</strong> (well suited to tape applications)<br />
• Very low extractables<br />
• Low back side transfer<br />
UV POLY 201 4000 • High viscosity Epoxy base polymer<br />
• Excellent holdout on porous substrates<br />
• Adapted to flexo coating technology<br />
• Medium <strong>release</strong> (well suited to tape applications)<br />
• Very low extractables<br />
UV POLY 204 50 • Low viscosity Epoxy base polymer<br />
• Medium <strong>release</strong> (well suited to tape applications)<br />
• Very low extractables<br />
• Low back side transfer<br />
• Reactive diluent for coating quality improvement<br />
UV POLY 215 450 • Epoxy base polymer<br />
• Exceptional anchorage to untreated films<br />
• Very low extractables<br />
• Lower co-efficient of friction<br />
• Medium <strong>release</strong><br />
UV POLY 206 350 • Low <strong>release</strong> monocomponent<br />
• Very low extractables<br />
• Low backside transfer<br />
UV POLY 220 5500 • Low epoxy<br />
• High Viscosity<br />
• Low <strong>release</strong><br />
• Ideal for <strong>release</strong> of bitumen or mastics<br />
UV POLY 230 450 • Low <strong>release</strong> monocomponent<br />
• Improved anchorage to different substrates<br />
• Improved coating durability<br />
UV POLY 235 400 • Low <strong>release</strong> polymer for 2 component systems<br />
Photoinitiators UV CATA 221 • Patented photoinitiator in DAA<br />
(diaryliodonium, tetrakis<br />
(pentafluorophynyl borate salt)<br />
• Excellent compatability with UV Epoxy polymers<br />
UV CATA 232 • (Di-alkyl phenyl) iodonium<br />
hexafluoroantimonate patent pending<br />
photoinitiator in a reactive diluent<br />
• Excellent anchorage on films, especially BOPP.<br />
Release Control UV RCA 200 850 • Premium <strong>release</strong> additive<br />
Additive • Low migration<br />
• Suitable for label & tape applications<br />
PC-675 2000 • Premium <strong>release</strong> additive<br />
• Reduces co-efficient of friction<br />
• Particularly suited to bulk adhesive applications<br />
UV RCA 251 2000 • Tight <strong>release</strong> modifier<br />
• Excellent anchorage<br />
Performance PC-850 10 • Anchorage additive<br />
Enhancement UV ADD 283 2500 • Low friction additive<br />
UV ADD 280 RED - • Tint<br />
UV ADD 280 BLUE - • Tint<br />
Acrylate chemistry with free radical<br />
curing mechanism<br />
Silcolease® Product Viscosity (mPa.s) Features<br />
Base Polymer UV POLY 110 1000 • High acrylate functionality<br />
• Matrix of the final coating<br />
Release Control UV RCA 172* 200 • Easy <strong>release</strong> modifier<br />
Additive UV RCA 170 1000 • Low acrylate functionality<br />
• Reduces zippy <strong>release</strong> phenomena<br />
• Excellent EB easy <strong>release</strong><br />
UV RCA 180* 2000 • Tight <strong>release</strong> modifier<br />
• Developmental product<br />
Performance UV RCA 171* 800 • Smooth <strong>release</strong> effect even at low levels<br />
Enhancement • Premium <strong>release</strong> stability gainst aggressive adhesives<br />
UV ADD 150 400 • Adhesion Promoter<br />
• Good anchorage<br />
* Developmental Product (contact your sales representitive for more information on developmental product availability)<br />
Comparison of cationic and<br />
free radical system features<br />
UV POLY 110 UV POLY 200<br />
ACRYLATE SILICONE EPOXY SILICONE<br />
Free Radical system Cationic system<br />
Cure Rate FAST FAST<br />
Oxygen Inhibition (N 2 inertion required) YES NO<br />
Substrate sensitivity NO YES<br />
Siliconize over print YES LIMITED<br />
Adhesion GOOD GOOD<br />
UV and EB curable YES YES
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