Organotin-free and BPA-free solutions
Address UV curing market regulatory challenges with Sartomer’s specialty acrylates expertise
Compliance with challenging regulations and directives
Most influential brand owners are more and more recommending to ban some chemicals for use in consumer goods. All along the supply chain, industrial players are trying to find alternatives to these potentially dangerous substances like BPAs and organotin.
Sartomer is actively working to find the best alternative solutions to keep the formulators at the highest level of performance.
Our organotin-free solutions
Today, organotin compounds are more and more subject to public awareness:
- DBTL classified reprotoxic1B
- DOTL on-going proposal by member state Sweden to change classification to reprotoxic1B
- IKEA bans all compounds containing Sn-C bond
Therefore, Sartomer has developed a product range to respond to the formulators and brand-owners concerns regarding organotin compounds: organotin-free urethane acrylates.
|
Product |
F* |
Viscosity @25°C (Pa.s) |
Applicative field |
Key performance |
|||||
| Wood coating | Metal coating | Plastic coating | OPV | Inks | Inkjet | ||||
| CN965 | 2 | 23 @50°C | X | X | X | X | Impact resistance | ||
| CN9761TF | 2 | 6 @50°C | X | X | Abrasion resistance | ||||
| CN996(A80) | 2 | 6,8 @60°C | X | X | Adhesion | ||||
| CN1963 | 2 | 1,7 @60°C | X |
Heat resistance |
|||||
| CN925 | 4 | 2,6 | X | X | Reactivity | ||||
| CN9165A | 6 | 50 | X | X | X | Stain resistance | |||
| CN9196 | 6 | 50 | X | X | X | Mechanical performance | |||
| CN9276 | 6 | 5,8 | X | X | Scratch resistance | ||||
F*=functionality
Our BPA-free solutions
Bisphenol A is a classical building block of epoxy acrylate oligomers that are commonly used for any kind of formulation in wood coatings, inks and overprint varnishes. But some concern has raised concerning its use:
- BPA is classified H360F (reprotoxic 1B)
- BPA identified as SVHC (“Substance of Very High Concern”)
- « BPA free » is widely mentioned for the public (receipts, baby bottles,…)
Sartomer developed two BPA free oligomers: CN2911 and CN2912, as performance match to standard Bisphenol A epoxy acrylates. They have:
- Same level of viscosity
- Excellent hardness and chemical resistance properties
- Excellent cure speed
| Liquid properties | CN104D80 reference | CN2911 | CN2912 |
| Functionality | 2 | 3 | 3 |
| Viscosity @50°C (mPa.s) | 3200 | 3200 | 3200 |
| Color (Gardner) | <2 | <2 | <2 |
| Mw (g/mol) | 900 | 3000 | 3500 |
| Cured film properties | CN104D80 reference | CN2911 | CN2912 |
| Mandrel bend (mm) | 20 | 25 | 25 |
| Persoz hardness (s) | 350 | 340 | 290 |
| Acetone resistance (s) | >300 | >300 | >300 |
| Tg (°C) | 100 | 70 | 35 |
| Yound modulus (MPa) | 1800 | 1370 | 1295 |